Add the admin Today tab (compact design)

Render ADMIN-SPEC §2.1-2.6 from GET /api/v1/admin/snapshot: header with
cycle day, the Done/Remaining/Overdue stat row, child rows with progress
and away state, the needs-attention list, and the admin-only Undo
permission note. The scroll column ends with 92px bottom padding, and
loading and error states never leave the panel blank.

Mark done / Undo render per spec but are not wired (task e57facc2).
The override pill and "from panel" actor are omitted: the snapshot
carries neither field.

Task: e0a2b862-8c1e-4d5b-95ad-48b460bfeaa0

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

.gitignore

@@ -4,3 +4,4 @@ __pycache__/
 .venv/
 .pytest_cache/
 *.metadata.json
+frontend/node_modules/

.opencode/agents/approver.md

@@ -0,0 +1,32 @@
+---
+description: Independently verify NestQuest merge gates and merge approved heads
+mode: primary
+model: openrouter/deepseek/deepseek-v4.1-flash
+permission:
+  edit: deny
+  write: deny
+  task: deny
+  bash:
+    "*": deny
+    "/home/overseer/.local/share/nestquest-controller/scripts/nq-approve-merge *": allow
+  external_directory:
+    "*": ask
+    "/tmp/opencode/*": allow
+    "/home/overseer/.local/share/nestquest-controller/*": allow
+---
+
+You are the NestQuest feature-to-dev approver, separate from the controller and
+developer sessions. Verify the current PR head equals the independently
+reviewed and approved commit,
+required checks pass, blocking findings are resolved, branch protection is
+satisfied, and Maestro has accurate links. Use only the approver Gitea identity
+for the merge. Do not change code or approve a stale head. Use only the
+installed nq-approve-merge launcher for Gitea inspection and merging. Merge
+only into dev; never merge into main. If any gate is
+missing, refuse the merge and give the exact missing evidence. Report the PR,
+reviewed head, resulting merge commit, and target branch.
+
+Broker syntax: `nq-approve-merge inspect PR_NUMBER` or
+`nq-approve-merge merge PR_NUMBER REVIEWED_HEAD REVIEW_FILE`. Run one broker
+command per Bash call. The broker validates the current PR and review again
+before merging; do not substitute an ad hoc Gitea command.

.opencode/agents/developer.md

@@ -0,0 +1,21 @@
+---
+description: Implement one assigned NestQuest task in an isolated worktree
+mode: primary
+model: openrouter/z-ai/glm-5.3-flash
+permission:
+  task: deny
+  external_directory:
+    "*": ask
+    "/tmp/opencode/*": allow
+---
+
+You are the NestQuest development agent. Implement only the assigned Maestro
+task in the supplied worktree. Follow the task's acceptance criteria and the
+repository's instructions. Run relevant tests, commit on the task branch, and
+report the commit and test results. Keep changes inside the assigned worktree.
+Do not approve your own pull request. You may merge your task PR into the
+feature branch only after the independent reviewer approved its exact current
+head and the controller verified every task merge gate. Never merge a feature
+into dev or a release into main. Do not start another task, change role, or
+use another model. Do not read or print credential files except when the
+approved task merge requires the existing Gitea development credential.

.opencode/agents/orchestrator.md

@@ -0,0 +1,60 @@
+---
+description: Reconcile NestQuest work and dispatch the next verified action
+mode: primary
+model: openrouter/deepseek/deepseek-v4.1-flash
+permission:
+  doom_loop: deny
+  task: deny
+  external_directory:
+    "*": ask
+    "/tmp/opencode/*": allow
+    "/home/overseer/.local/share/opencode/tool-output/*": allow
+---
+
+You are the NestQuest controller. Work in the NestQuest repository. Maestro is
+the source of truth for feature and task state; CTXD is the source of truth for
+project instructions. At the start of every invocation, read the current
+NestQuest context in CTXD, including OPENCODE-ORCHESTRATOR-PROMPT.MD, then
+reconcile it with Maestro, Git, pull requests, and checks before dispatching.
+Follow the review, identity, and branch rules in that prompt.
+If the CTXD project or prompt is unavailable, do not dispatch or merge work;
+report the missing source and end with ORCHESTRATOR_STATE: BLOCKED.
+
+One invocation is a controller tick, not an entire feature lifetime. Prefer a
+state-changing action over another identical status query. Never repeat an
+unchanged tool call three times. If work is asynchronous, wait or inspect a
+specific changed result. Do not claim that you are continuing while ending
+the turn without naming the next action.
+
+The NESTQUEST_CONTROL_HOME environment variable names the installed launchers
+(normally /home/overseer/.local/share/nestquest-controller).
+For implementation, run "$NESTQUEST_CONTROL_HOME/scripts/nq-agent" with role
+developer, a task worktree, title, and task prompt file. For independent
+review, run "$NESTQUEST_CONTROL_HOME/scripts/nq-review" with the worktree,
+feature base ref, exact head ref, review prompt file, PR number, and an output
+file under /tmp/opencode. It publishes an exact-head Gitea approval only after
+Claude approves. The developer may merge
+a task PR into its feature branch only after independent approval of the exact
+head and verification of every task gate. For feature-to-dev approval and
+merge, run "$NESTQUEST_CONTROL_HOME/scripts/nq-agent" with role approver in
+a separate session after the independent review. Save the Claude review output
+in a file under /tmp/opencode and give that file and its reviewed head to the
+approver. Never substitute a different model or reviewer silently.
+
+When a feature is integrated into dev, reconcile Maestro, then immediately
+select and dispatch the next eligible feature. Feature completion is a
+transition, not the end of the controller's job. A release awaiting Joshua's
+main merge does not prevent work on independent eligible features.
+
+End each invocation with exactly one final line using one of these values:
+
+ORCHESTRATOR_STATE: CONTINUE
+ORCHESTRATOR_STATE: QUIESCENT
+ORCHESTRATOR_STATE: BLOCKED
+
+Use CONTINUE when there is any eligible or in-flight work; include the feature,
+task, and next concrete action immediately above the final line. Use QUIESCENT
+only after verifying no eligible or in-flight work remains in Maestro and the
+repository. Use BLOCKED only when a specific decision or access is required;
+include evidence and the needed human action. If you cannot establish the
+state, use BLOCKED. Never emit a success claim based only on a child's summary.

.opencode/agents/terminal-orchestrator.md

@@ -0,0 +1,31 @@
+---
+description: Run the NestQuest orchestration loop in this foreground terminal
+mode: primary
+model: openrouter/deepseek/deepseek-v4.1-flash
+permission:
+  doom_loop: deny
+  task: deny
+  external_directory:
+    "*": ask
+    "/tmp/opencode/*": allow
+    "/home/overseer/.local/share/opencode/tool-output/*": allow
+---
+
+You are the foreground NestQuest orchestrator. The user explicitly launched
+this session to run the development queue now. Read the supplied terminal
+orchestrator prompt and current CTXD project context, but follow the
+FOREGROUND TERMINAL RUNTIME for this session instead of CTXD's service runtime
+section.
+
+Continuously reconcile Maestro, CTXD, Git, pull requests, checks, and child
+agent results. Execute the next useful transition in this same session. Do
+not finish after dispatch, review, remediation, or merge while eligible work
+remains. Use the installed role launchers for developer, reviewer, and
+approver isolation. Never start or wait for the systemd controller service.
+Never repeat an identical unchanged tool call three times; wait on the
+specific child or inspect newly changed evidence.
+
+End only at a global terminal condition, an explicit user stop, a genuine
+global access/decision block with no other eligible work, or a host-forced
+yield. On a forced yield, return a continuation checkpoint that can be
+resumed in the same OpenCode session.

.opencode/commands/start-development.md

@@ -0,0 +1,11 @@
+---
+description: Run the NestQuest orchestrator now in this OpenCode terminal
+agent: terminal-orchestrator
+---
+
+Run the NestQuest project queue now in this foreground OpenCode session.
+Read the current CTXD prompt and Maestro state, but use the FOREGROUND
+TERMINAL RUNTIME instead of the service runtime. Reconcile repository and
+pull-request state, then execute CONTROLLER_TICK repeatedly until a global
+terminal condition, explicit user stop, genuine global block, or host-forced
+yield. Do not start or wait for the systemd controller.

ORCHESTRATION.md

@@ -0,0 +1,77 @@
+# NestQuest foreground orchestrator
+
+OpenCode 1.18.32 loads the named agents from `.opencode/agents/`. Their
+models match the current NestQuest CTXD prompt: DeepSeek V4.1 Flash for the
+foreground orchestrator and approver, and GLM 5.3 Flash for development.
+Run orchestration directly from a shell:
+
+```bash
+nq-orchestrate
+nq-orchestrate mission.md
+cat mission.md | nq-orchestrate -
+nq-orchestrate --print-prompt > nestquest-orchestrator.md
+```
+
+The launcher renders the project prompt with the foreground terminal runtime,
+stops the dormant legacy service, refuses immediately when another NestQuest
+TUI is open, and then replaces itself with OpenCode using
+`terminal-orchestrator`. There is no background polling process and no wait
+for a controller tick. Exit or interrupt the TUI to stop the foreground run;
+resume that OpenCode session when a host-forced yield needs continuation.
+
+`scripts/nq-agent` launches developer and approver sessions with fixed agent
+definitions and no `--auto` flag. Headless OpenCode runs use `--pure` so the
+global idle-notification plugin does not notify on every controller tick.
+The approver's shell permission permits only the installed
+`nq-approve-merge` broker for Gitea. That broker requires exact-head
+Claude approval evidence, an exact-head Gitea approval by `review_agent`,
+the `dev` target, a mergeable PR, and passing configured checks before it
+requests a squash merge with Gitea's atomic `head_commit_id` guard.
+`scripts/nq-review` launches the independent
+Claude review in a noninteractive read-only session in the task worktree,
+checks the head again afterward, saves
+the output under `/tmp/opencode`, and posts the Gitea approval.
+The approver verifies the reviewed head again before a merge.
+
+The terminal launcher uses a stable copy of this configuration and scripts
+at `/home/overseer/.local/share/nestquest-controller`; it does not depend on
+which task branch is checked out in the primary NestQuest directory. Install
+that copy, run `scripts/nq-controller --check`, and verify the OpenCode
+agents (terminal-orchestrator, developer, and approver)
+with `opencode debug agent <name>` while `OPENCODE_CONFIG_DIR` points at the
+installed `.opencode` directory. Install `scripts/nq-orchestrate` in
+`~/.local/bin/`. For the global slash command, also install
+`.opencode/agents/terminal-orchestrator.md` under
+`~/.config/opencode/agents/` and
+`deploy/opencode-global-commands/start-nestquest-development.md` under
+`~/.config/opencode/commands/`. The old `nestquest-controller.service` remains static and
+inactive only for migration safety; foreground launch stops it.
+
+Inside an already-open OpenCode TUI, `/start-development` (or the global
+`/start-nestquest-development`) switches to the same foreground
+`terminal-orchestrator` behavior immediately. The shell launcher is the
+preferred entry point when supplying a mission prompt file.
+
+`templates/ORCHESTRATOR-PROMPT.template.md` and
+`templates/nestquest.profile.json` make the current CTXD cycle prompt
+adaptable to another project. See `templates/README.md` before publishing a
+rendered prompt for a new project.
+
+The CTXD preflight reads the configured HTTP/MCP server's NestQuest prompt.
+It deliberately does not inspect `/home/overseer/.ctx/ctxd.db`, which belongs
+to a different local store and lacks this project.
+
+All four agent credentials are currently readable by the same Unix account.
+The Gitea review and merge gates enforce normal workflow sequencing, but
+they are not a hard isolation boundary against a process running as that
+account. Strong isolation requires separate OS identities and protected
+credentials for the controller, reviewer, and approver.
+
+The terminal runtime repeatedly executes CONTROLLER_TICK within the foreground
+session. Neither a feature merge nor a progress report ends the run while
+eligible work remains. A host-forced yield returns a continuation checkpoint
+that can be resumed in the same OpenCode session.
+
+Do not put tokens in this repository or in unit files. Existing OpenCode MCP
+connections supply CTXD and Maestro. Rotate those MCP tokens as a coordinated
+operation across every consumer before revoking the old values.

README.md

@@ -13,14 +13,14 @@ NestQuest helps households coordinate daily life, chore tracking, custody schedu
 1. Ensure [HACS (Home Assistant Community Store)](https://hacs.xyz/) is installed.
 2. In Home Assistant, open **HACS** > **Integrations**.
 3. Select the three-dots menu in the top right and click **Custom repositories**.
-4. Enter the repository URL: `https://github.com/talon2king/NestQuest`
+4. Enter the repository URL: `https://github.com/Maniacs-Mansion/NestQuest`
 5. Select category **Integration** and click **Add**.
 6. Search for **NestQuest** and click **Download**.
 7. Restart Home Assistant.
 
 > **Note:** Development happens in the private Gitea repository
 > (`https://code.cubecraftlabs.com/Maniacs_Mansion/NestQuest`). The GitHub
-> repository is a public mirror maintained for HACS distribution.
+> repository is a private mirror maintained for HACS distribution.
 
 ### Manual Installation
 
@@ -38,6 +38,278 @@ After installation and restart:
 2. Click **Add Integration** and search for **NestQuest**.
 3. Follow the on-screen configuration flow.
 
+## Events
+
+NestQuest fires Home Assistant bus events so automations can react to a
+child's progress. Each payload carries `child_id`, `child_name`,
+`instance_id`, `quest_title`, the instance's `window`, `due_date`,
+`due_time`, and `occurred_at` (a strict UTC ISO-8601 timestamp).
+
+| Event | Fires when | Extra payload fields |
+|---|---|---|
+| `nestquest_quest_completed` | a quest is completed (an actual completion, never a re-complete no-op) | `was_on_time` (bool) |
+| `nestquest_quest_uncompleted` | an admin reverses a completion | — |
+| `nestquest_child_day_complete` | a completion clears the child's whole day (quests were owed and none remain; a zero-quest day never fires it) | `quests_due`, `quests_completed` |
+| `nestquest_quest_missed` | the nightly sweep marks a still-open past-due quest missed (integrated in a later release) | — |
+
+Example automation trigger:
+
+```yaml
+triggers:
+  - trigger: event
+    event_type: nestquest_child_day_complete
+conditions:
+  - condition: template
+    value_template: "{{ trigger.event.data.child_name == 'Declan' }}"
+actions:
+  - action: notify.mobile_app_declans_phone
+    data:
+      message: "Every quest cleared — legendary!"
+```
+
+## Automation Blueprints
+
+NestQuest ships four automation blueprints in
+`custom_components/nestquest/blueprints/automation/`. Import them in
+Home Assistant under **Settings → Automations & Scenes → Blueprints**
+(or place the files in your `config/blueprints/automation/` folder),
+then create one automation per blueprint, filling the inputs with your
+household's choices.
+
+### Wiring to the integration's notification settings
+
+The integration's options flow records your notification choices —
+notify target, morning/afternoon/end-of-day times, and a toggle per
+automation. The blueprints take their own inputs at import time;
+fill them from the same values you stored in the options flow (the
+integration does not push its settings into imported automations):
+
+| Blueprint input | Options-flow counterpart |
+|---|---|
+| `morning_time` (default 08:00) | `morning_summary_time` |
+| `afternoon_time` (default 15:00) | `afternoon_reminder_time` |
+| `report_time` (default 20:00) | `end_of_day_report_time` |
+| `send_summary` / `send_reminder` / `send_report` / `celebrate` | the four `*_enabled` toggles |
+| `notify_target` | `notify_target` (your notify service, e.g. `notify.mobile_app_your_phone`) |
+
+The end-of-day report deliberately runs BEFORE the midnight missed
+sweep and reads the same day's data — do not schedule it at the
+day-rollover time.
+
+### The four blueprints
+
+1. **Morning summary** (`morning_summary.yaml`) — at the configured
+   time, lists every child whose `binary_sensor.nestquest_<child>_present_today`
+   is on and what they owe from `sensor.nestquest_<child>_quests_remaining_today`.
+   Children not present today are omitted entirely.
+
+2. **Afternoon reminder** (`afternoon_reminder.yaml`) — at the
+   configured time, notifies only about present children who still
+   have open quests. Sends nothing at all when every present child is
+   clear.
+
+3. **End-of-day report** (`end_of_day_report.yaml`) — one message per
+   evening: each present child's completion count and the quests they
+   still owe (the ones the midnight sweep will mark
+   `nestquest_quest_missed`). Absent children are omitted. Sends
+   nothing on an all-clear day unless `send_even_when_clear` is on.
+
+4. **Day-complete celebration** (`day_complete_celebration.yaml`) —
+   triggers on the `nestquest_child_day_complete` event (which only
+   fires when quests were owed and all are complete, so a zero-quest
+   day never celebrates). Create one `input_text` helper
+   (`nestquest_last_celebrated`) for the dedupe: the automation
+   records each celebrated child as `<child_id>:<today>` and
+   celebrates each child at most once per day — a re-cleared day does
+   not re-fire, but a second child clearing the same day still
+   celebrates.
+
+### Example package
+
+```yaml
+# One automation per blueprint — Settings → Automations & Scenes →
+# Create → Blueprint, then pick each NestQuest blueprint.
+#
+# morning_summary:   morning_time 08:00, notify_target notify.mobile_app_your_phone
+# afternoon_reminder: afternoon_time 15:00, same notify target
+# end_of_day_report:  report_time 20:00, send_even_when_clear false, same target
+# day_complete_celebration: input_text.nestquest_last_celebrated,
+#                            celebration_message "Legendary! {{ trigger.event.data.child_name }} cleared every quest today!"
+#
+# Every blueprint has its own send/celebrate toggle input; turn an
+# automation off entirely from HA's automation menu.
+```
+
+### Events the automations rely on
+
+| Event | Payload |
+|---|---|
+| `nestquest_quest_completed` | child_id, child_name, instance_id, quest_title, window, due_date, due_time, occurred_at (UTC ISO-8601), was_on_time |
+| `nestquest_quest_uncompleted` | child_id, child_name, instance_id, quest_title, window, due_date, due_time, occurred_at |
+| `nestquest_child_day_complete` | child_id, child_name, quests_due, quests_completed, occurred_at |
+| `nestquest_quest_missed` | child_id, child_name, instance_id, quest_title, window, due_date, due_time, occurred_at (fired by the nightly sweep) |
+
+Sensors the automations read: `sensor.nestquest_<child>_quests_due_today`
+(attributes: `child_id`, `child_name`, `present`, `instances`,
+`admin_instances`), `..._quests_remaining_today`,
+`..._quests_completed_today`, and
+`binary_sensor.nestquest_<child>_present_today`.
+
+## TouchHub setup
+
+Run these steps in order to display the NestQuest panel on a TouchHub
+wall device. The panel is an HA Lovelace dashboard, so the kiosk browser
+is simply a Home Assistant client. The path below is zero-config: the
+integration registers its panel dashboard itself on setup, so no YAML
+and no hand-built views are involved.
+
+1. **Install the integration and add the config entry.** Install
+   NestQuest via HACS or manually (see Installation above) and restart
+   Home Assistant. Then, in *Settings → Devices & Services*, click
+   **Add Integration**, search for **NestQuest**, and submit the flow —
+   it has no fields; it just creates the single config entry. Then open
+   the entry, click **Configure**, and fill the panel-plane API
+   connection in the options flow:
+
+   - **NestQuest API base URL** — the full `http://host:port` URL of
+     your NestQuest API service (default `http://127.0.0.1:8000`).
+   - **Panel service token** — the token the panel presents to the API
+     service as its Bearer credential. It may stay empty until you have
+     one; a pasted token must be unpadded.
+
+   The form's remaining fields (panel idle timeout, coordinator update
+   interval, last-good snapshot staleness) have defaults that serve the
+   panel and need no change here.
+
+2. **The panel dashboard appears automatically.** On setup the
+   integration registers one storage-mode Lovelace dashboard: a sidebar
+   entry titled **NestQuest** at the URL path `/nestquest`, whose stored
+   config is nothing but the **`custom:nestquest-party` strategy**
+   (`strategy: { type: custom:nestquest-party }`). The strategy
+   generates the views at render time from the household roster:
+
+   - **The Party** — the party-board view at `/nestquest/party`; the
+     dashboard root `/nestquest` shows it as the first view.
+   - one quest-log view per child at `/nestquest/<child-slug>`
+     ("Ada's Quest Log", …), in roster order.
+
+   Nothing is hand-configured: no YAML, no manual views, no
+   `child_order`, no `quest_log_path`/`board_path` — the board and the
+   quest logs compute their navigation paths from the dashboard's own
+   URL — and every generated view is already in **Panel** layout (see
+   the two constraints below). If the Lovelace surfaces are unavailable
+   (for example when Lovelace runs in YAML mode), setup logs a warning
+   and skips the registration; create the dashboard manually with the
+   same strategy as described in the manual alternative below.
+
+3. **Create a dedicated kiosk user.** In *Settings → People → Users*, add
+   a new user for the wall device. Make it **non-admin**, and ensure it is
+   not in the NestQuest admin allowlist. The allowlist blocks the NestQuest
+   **admin** operations — `uncomplete_quest`, `create_quest_definition`,
+   `update_quest_definition`, `set_quest_definition_active`,
+   `set_presence_pattern`, `create_presence_override`,
+   `delete_presence_override`, `export_history_csv`, and `manage_child`
+   (plus `regenerate` flows) — it does not make the account view-only. The
+   kiosk user *can* call `nestquest.complete_quest`, the one open NestQuest
+   service, to complete quests from the panel, and as a non-admin Home
+   Assistant user it may also reach other permitted Home Assistant entities
+   and services.
+
+4. **Open the dashboard and point TouchHub at it.** Open
+   `http://<home-assistant>/nestquest` in a browser first and check the
+   party board renders with your children's crests. Then, in the
+   TouchHub launcher, add the **Home Assistant Lovelace** app to the
+   dock and paste the dashboard URL from step 2 — the dashboard root,
+   `/nestquest` (TouchHub loads that URL directly as the kiosk landing
+   page). Set TouchHub **Auto-Return** to a value GREATER than the
+   quest log's `idle_return_seconds` (default 40s) — recommend **60s or
+   higher**. If Auto-Return is at or below 40s, TouchHub returns to its
+   launcher before the quest log's idle return can navigate back to the
+   party board.
+
+5. **Log the kiosk session in.** Sign in on the device as the dedicated
+   kiosk user from step 3, and leave that session logged in.
+
+TouchHub loads the dashboard URL directly. The NestQuest cards are normal
+Lovelace cards, not an iframe, so no Home Assistant framing setting is
+needed.
+
+### The two constraints
+
+- **Panel layout.** Every view must be in **Panel** (single-card)
+  layout: Home Assistant's default Masonry layout constrains the
+  1080px-tall NestQuest card to a narrow column, while Panel renders the
+  card full-screen at 1920×1080. The zero-config path already satisfies
+  the requirement — the strategy generates every view as
+  `type: panel` — while the manual alternative below requires setting
+  the layout by hand on each view (Edit Dashboard → pencil on the view
+  → View type: Panel).
+
+- **TouchHub Auto-Return.** TouchHub's **Auto-Return** must be greater
+  than the quest log's `idle_return_seconds` (default 40s) — recommend
+  **60s or higher** — so the launcher does not reclaim the wall device
+  before the quest log's own idle return navigates back to the party
+  board.
+
+### Manual alternative: build the dashboard by hand
+
+If you prefer not to use the zero-config dashboard above — or its
+registration was skipped — configure a Lovelace dashboard whose **URL
+slug is `nestquest`** (Settings → Dashboards → Edit → URL slug)
+yourself. Two options, in decreasing order of convenience:
+
+- **Use the strategy.** Give the dashboard
+
+  ```yaml
+  strategy:
+    type: custom:nestquest-party
+  ```
+
+  and no views of your own — the strategy generates the party-board and
+  quest-log views (each already in Panel layout) from the household
+  roster at render time. Optional `url_path` and `weather_entity` keys
+  may sit beside `strategy:`.
+
+- **Build the two views by hand.** A functional panel needs **two**
+  views in that dashboard, each with its own card config from
+  `design/ENTITIES-AND-SERVICES.md` §4. Give the views these exact URL
+  paths (the path segment after the dashboard slug):
+
+  - **View 1 path `board`** (URL `/nestquest/board`) — party board
+    (`type: custom:nestquest-party-board-card`): the household quest
+    board. Set `weather_entity` (optional; the dock falls back to
+    date/time), `quest_log_path: /nestquest/log` (the view the crest tap
+    navigates to), and `child_order: [slug1, slug2, slug3]` listing each
+    child's slug in display order.
+
+  - **View 2 path `log`** (URL `/nestquest/log`) — quest log
+    (`type: custom:nestquest-quest-log-card`): the per-child quest screen
+    the party board hops to. Set `board_path: /nestquest/board` (the
+    party-board view to return to), `weather_entity`,
+    `idle_return_seconds` (must be shorter than TouchHub Auto-Return —
+    see the two constraints above), `confirm_timeout_seconds`, and
+    `complete_screen_seconds`. The quest log reads the selected child's
+    slug from the view's URL path, so the board → log hop is a plain
+    Lovelace navigation.
+
+  The dashboard contains only the NestQuest panel card for each view —
+  no other cards, no admin controls. Each view's layout MUST be set to
+  **Panel** — see the two constraints above for why; the strategy
+  generates it for you, hand-built views do not get it for free.
+
+  The `quest_log_path` and `board_path` values must match the dashboard
+  slug and view paths above: `/<slug>/<view>`. If you chose `nestquest`
+  as the dashboard slug with view paths `board` and `log`, the card
+  configs are already correct. If you pick different names, substitute
+  your actual paths in **both** card configs — e.g. a dashboard slug
+  `chores` with view paths `main` and `history` needs
+  `quest_log_path: /chores/history` and `board_path: /chores/main`.
+  Navigation between the two views fails (the crest tap or back button
+  lands on a 404) if the card config paths do not match the dashboard
+  slug and view paths exactly.
+
+  See `design/ENTITIES-AND-SERVICES.md` §4 for the full card YAML.
+
 ## Developer Setup and Testing
 
 This project uses [`uv`](https://github.com/astral-sh/uv) for fast Python package and dependency management.
@@ -55,6 +327,28 @@ To set up the development environment and install dependencies:
 uv sync
 ```
 
+### Frontend cards
+
+The Lovelace cards live in `frontend/` (TypeScript + Lit) and build to a
+single bundle at `custom_components/nestquest/www/nestquest-cards.js`. The
+integration registers that bundle as a Lovelace resource automatically on
+setup — do not add it by hand. Card YAML is documented in
+`design/ENTITIES-AND-SERVICES.md` §4.
+
+```bash
+cd frontend
+npm install
+npm run build
+```
+
+### Kids panel layout
+
+The Lovelace panel cards are designed for the wall display's confirmed
+resolution, 1920×1080 landscape, with no page scroll. TouchHub's bottom
+dock overlays the NestQuest weather dock strip until it auto-hides, so
+no tappable NestQuest control sits in that strip (the dock carries
+`pointer-events: none`). Keep it that way when editing the cards.
+
 ### Running Tests
 
 Run the test suite with `pytest`:

RELEASE_NOTES.md

@@ -1,5 +1,218 @@
 # NestQuest Release Notes
 
+## Version 0.6.0 — 2026-09-23
+
+### Scope
+
+Sixth release of NestQuest, promoting the re-imagined architecture
+(Features 15, 16, 18 and 20) and the foreground development-orchestration
+tooling from `dev` onto 0.5.0. This is a major architectural change: the
+Home Assistant integration becomes a thin client of a standalone NestQuest
+API service that owns the database.
+
+- **Feature 15 — Domain Core Extraction:** all domain code (schema,
+  migrations, database access, the DAOs, the pure recurrence/presence
+  engines, materialization, completion, the SSE-free event payload
+  builders, the panel snapshot builder, the children/definitions/allowlist
+  business layers, and an explicit settings object) now lives in a
+  Home-Assistant-free package bundled inside the integration at
+  `custom_components/nestquest/core/`. The SQLite schema and migration
+  versions are unchanged, so an existing `nestquest.db` opens without
+  migration. Covered by a no-Home-Assistant end-to-end smoke test.
+  (Tasks d0b691d8, 510c1f78, 4dd8f870, 628473ad.)
+- **Feature 16 — NestQuest API Service:** a standalone FastAPI service
+  (`api/`) that imports `core/` and is the only writer of the database.
+  Panel plane (`/api/v1/panel/*`) is authenticated by a static service
+  token: household snapshot and an idempotent complete route. Admin plane
+  (`/api/v1/admin/*`): children, quest definitions, presence
+  schedule/override, uncomplete, regenerate, history query + CSV export,
+  and settings — authenticated by an Authentik OIDC JWT (issuer, audience,
+  JWKS signature and expiry) plus membership in `nestquest-admins`, with
+  the panel service token rejected outright. A server-sent-events stream
+  publishes the quest-completed, quest-uncompleted, quest-missed and
+  child-day-complete transitions; the missed sweep runs in the API with a
+  cross-process-safe watermark. `/health` and the OpenAPI document are
+  served. (Tasks 042dfc5c, ae7e90ae, 1860ef76, 4d7bae00, 44c93cfd,
+  e70e6bfb, 0f2afb29, e4845baa, b586a2f1, e4a9d31b, da0226b3, 2d2dda53,
+  2b3de7e5, 9047a97b, 9a118da9, 058c7b69, a232c4f5.)
+- **Feature 18 — HA Integration as API Client:** the integration no longer
+  owns a database. It polls `GET /api/v1/panel/snapshot` and builds the
+  existing sensors (entity ids and per-child instance payload shape
+  unchanged), subscribes to the SSE stream and re-fires the four HA bus
+  events, proxies `nestquest.complete_quest` to the panel complete route,
+  and caches the last-good snapshot so a brief API outage does not blank
+  the panel. The HA admin services and the service permission gate are
+  removed; only the panel completion path remains. (Tasks 37d5e806,
+  6e70d166, b1ed9c45, 47c7c90e, d25b875f, d04f5bf3, ad67fc44.)
+- **Feature 20 — Zero-Config Panel Dashboard:** the panel installs with no
+  hand-written card YAML and no manual dashboard creation. The cards
+  auto-discover children from a household entity attribute (ordered by the
+  API's `sort_order`), a Lovelace dashboard strategy generates the
+  party-board view and one quest-log view per child at render time with
+  computed navigation paths, and the integration registers the dashboard
+  on first setup. Navigation and the panel transitions match the design
+  mockups. (Tasks 1b6d91d2, c859af23, c2d4dd8e, 107b8fbe, 50067c1f,
+  fc69c940, 67775be9.)
+- **Development orchestration tooling:** durable OpenCode controller and
+  role launchers, the foreground terminal orchestrator, the independent
+  review/approval gates, and the automatic release-preparation policy.
+
+### Requirements
+
+- Minimum Home Assistant version: **2024.6.0**.
+- A running NestQuest API service, reachable at the base URL and panel
+  service token configured in the integration options. The API service
+  source ships in `api/`; there is no container image, compose file or
+  deployment runbook in this release, and Feature 17 — the deployment
+  (TLS reverse proxy, Authentik, network separation, backups) — is **not**
+  part of this release and must be completed before the integration is
+  functional. See `docs/ARCHITECTURE.md` for the target design.
+
+### Breaking changes
+
+- **The HA integration no longer owns a database.** It reads exclusively
+  from the NestQuest API. The local `nestquest.db` is no longer opened,
+  migrated or written by the integration (the file is left untouched on
+  disk). Without a reachable API the entities become unavailable after the
+  configured staleness threshold; the panel serves the last-good snapshot
+  in the meantime.
+- **HA admin services are removed** (`uncomplete`, quest-definition
+  create/update/set-active, presence pattern/override, CSV export,
+  `manage_child`, `regenerate`) and the HA-side permission gate is gone.
+  Admin operations move to the API, and — once Feature 19 lands — the
+  admin PWA. Any automation that called an admin service must be
+  repointed at the API.
+- **Logger namespaces moved** under `custom_components.nestquest.core.*`:
+  the migrations runner now logs under
+  `custom_components.nestquest.core.migrations` (previously
+  `custom_components.nestquest.migrations`), and the children registry and
+  admin allowlist log under `custom_components.nestquest.core.children` and
+  `custom_components.nestquest.core.admin_allowlist`. The parent
+  `custom_components.nestquest` logger still catches all three; only users
+  who pinned a leaf logger name by its old spelling must update.
+- **The panel installs with no configuration.** `child_order`,
+  `quest_log_path` and `board_path` are no longer required (an explicit
+  value still wins). The integration registers a `custom:nestquest-party`
+  dashboard on setup; point TouchHub at it.
+- **Schema is unchanged at version 7** — no migration runs on upgrade.
+
+### Known Limitations
+
+- **Feature 17 (API deployment and identity) is not in this release.** The
+  API service source ships in `api/`, but no container image, compose
+  file, TLS reverse proxy, Authentik application/provider/`nestquest-admins`
+  group, proven network separation of the panel routes, or backup/restore
+  is included. Feature 17's containerization groundwork was completed on
+  its own feature branch, which is **not** merged into `dev` and therefore
+  is not part of this release. Until that deployment is completed the
+  integration has nothing to talk to.
+- **Feature 19 (admin PWA) is not in this release.** There is no admin UI
+  in 0.6.0; admin operations are reachable only through the API directly.
+- Moving the household database from Home Assistant to the API box is a
+  manual file copy (the schema is unchanged).
+- Single household; single API service.
+
+### Rollback
+
+Schema version is unchanged (7), so no migration is involved in either
+direction. Nevertheless **back up `nestquest.db` (plus `-wal`/`-shm`)
+before upgrading**: 0.6.0 never touches it, and a downgrade to 0.5.0
+resumes using exactly that file.
+
+**HACS installs:**
+
+1. Downgrade via HACS (HACS > Integrations > NestQuest > Redownload > 0.5.0).
+2. Restart Home Assistant.
+
+**Manual installs:**
+
+1. Replace `custom_components/nestquest/` with the 0.5.0 tree.
+2. Restart Home Assistant.
+
+**Repository operators:** git-revert the 0.6.0 release merge on `main`.
+
+## Version 0.5.0 — 2026-09-18
+
+### Scope
+
+Fifth release of NestQuest, promoting Features 06, 07, and 08 from `dev` onto 0.4.0 (quest model, children registry, presence engine):
+
+- **Feature 06 — quest definitions and assignment:** business layer `quest_definitions.py` over the multi-assignee / multi-window model (D-008). Create/edit/deactivate definitions; assign/unassign children; query helpers for materialization. `ScheduleRule` ⇄ `schedule_rules` storage mapping in the DAO layer.
+- **Feature 07 — instance materialization:** `materialize.py` fans out one instance per (definition, child, window, firing date) when the recurrence rule fires and the child is present. Idempotent on `(definition_id, child_id, due_date, window)`; skips completed instances; never generates past dates. HA-local `today` and configured `horizon_days` threaded end-to-end. Regeneration on definition/assignee/presence changes; daily rollover listener; startup backfill; `nestquest.regenerate` service.
+- **Feature 08 — completion and event log:** business layer `completion.py` wrapping the existing append-only `CompletionEventsDao`. `complete_instance` / `uncomplete_instance` (reversal event, original row untouched); state derived from the latest event; HA-local `was_on_time`; derived `missed` (never stored). Actor shapes `'user'` / `'panel'` with `actor_child_id` (D-008). Permission gating of un-complete is Feature 09.
+
+### Requirements
+
+- Minimum Home Assistant version: **2024.6.0**.
+
+### Breaking changes
+
+- None at the schema layer. Schema remains **version 6** (advanced in 0.4.0). This release adds application code only.
+
+### Known Limitations
+
+- No permission decorator yet (Feature 09): `complete_instance` / `uncomplete_instance` are Python APIs, not gated HA services. The only HA service in this release is `nestquest.regenerate`.
+- No entity or event surface (Feature 10): no sensors, no `nestquest_quest_completed` bus events.
+- No panel or admin Lovelace cards (Features 12/13).
+- Un-complete is implemented but not admin-gated until Feature 09.
+- Single-instance only.
+
+### Rollback
+
+Schema version is unchanged from 0.4.0 (still 6). A code downgrade to 0.4.0 does not require a database restore for schema compatibility, but **back up `nestquest.db` (plus `-wal`/`-shm`) before upgrading** — generated instances and completion events written by 0.5.0 remain in the file after downgrade; 0.4.0 will not generate or complete them.
+
+**HACS installs:**
+
+1. Downgrade via HACS (HACS > Integrations > NestQuest > Redownload > 0.4.0).
+2. Restart Home Assistant.
+
+**Manual installs:**
+
+1. Replace `custom_components/nestquest/` with the 0.4.0 tree.
+2. Restart Home Assistant.
+
+**Repository operators:** git-revert the 0.5.0 release merge on `main`.
+
+## Version 0.4.0 — 2026-09-15
+
+### Scope
+
+Fourth release of NestQuest, shipping three completed features on top of the data layer and recurrence engine:
+
+- **Feature 14 — quest domain model (BREAKING rename, D-007/D-008):** `task_definitions`/`task_instances` are now `quest_definitions`/`quest_instances` everywhere; definitions are multi-assignee (`quest_definition_assignees`, no single child column) and multi-window (`quest_definition_windows` — morning/afternoon/evening, clock ranges in `const.py`); the instance key widens to `(definition_id, child_id, due_date, window)` so twice-daily and shared quests materialise one instance per child per window per day; `completion_events` gains `actor_child_id` (the tapped panel profile; admin events stay NULL) with a second actor-pair CHECK. Schema version advances to **6**.
+- **Feature 03 — children registry & admin allowlist:** typed business layer for child profiles (create/edit with trimmed required names and duplicate-name warnings, whole-table reorder, deactivation as the only removal path — history is never touched); the admin allowlist with a fail-closed `is_admin` resolver (empty allowlist denies everyone; the last admin cannot be removed); automatic seeding on first setup (the config-flow user is persisted in entry data, with the options-flow list and HA owner accounts as fallbacks) so the owner is never locked out; the options flow gains a multi-select picker of existing Home Assistant users.
+- **Feature 05 — presence & custody engine:** a pure `PresenceSchedule`/`PresenceOverride` model with total validation and lossless round-trips; anchor-date cycle arithmetic (D-004 — never ISO week numbers or parity); `PresenceEngine.is_present` with the always-present default for schedule-free children; date overrides beat the repeating pattern; a `next_present_dates` preview for the admin schedule UI; a full-year regression guard walking 2020 (366 days, ISO week 53) and 2015 (365 days, ISO week 53) proving the rotation never inverts at a year boundary.
+
+### Requirements
+
+- Minimum Home Assistant version: **2024.6.0**.
+
+### Breaking changes
+
+- The database schema advances from version 1 to version 6. Upgrades are automatic and data-preserving (legacy `task_*` tables are renamed; the definitions table is rebuilt for multi-assignee; legacy instances pin to the morning window; panel events backfill `actor_child_id`). **Back up `nestquest.db` before upgrading** — see Rollback.
+- Dev installs from before 2026-09-15 migrate automatically on first start.
+
+### Known Limitations
+
+- Still no entities, services, calendar platforms, or panel cards: nothing is user-visible in Home Assistant yet (Features 06-10 land the business layer, materialisation, permission gate, and entity surface).
+- No materialisation yet: instances are not generated from definitions + presence yet (Feature 07).
+- Single-instance only.
+
+### Rollback
+
+**Back up `nestquest.db` (plus `-wal`/`-shm` sidecars) BEFORE upgrading.** This release migrates the database to schema version 6 with renamed tables; an older NestQuest build refuses a version-6 database ("newer than this integration understands") and cannot read renamed tables at all — a plain downgrade is NOT possible once the database has been migrated.
+
+**Rollback procedure (after a migrated database):**
+
+1. Stop Home Assistant.
+2. Restore the pre-upgrade `nestquest.db` backup (and sidecars) you made before upgrading.
+3. Downgrade the integration (HACS > Integrations > NestQuest > Redownload > 0.3.0) or replace `custom_components/nestquest/` manually.
+4. Restart Home Assistant.
+
+Without a backup, the only path is staying on 0.4.0 (recommended) or deleting the integration and its database to start fresh (Settings > Devices & Services > NestQuest > Delete, then remove `nestquest.db`).
+
+**Repository operators:** instead of uninstalling, git-revert the release merge on `main` and restore the pre-upgrade database.
+
 ## Version 0.3.0 — 2026-09-14
 
 ### Scope
@@ -126,4 +339,4 @@ v0.1.0 is the first release — there is no previous NestQuest version to downgr
 
 **Data:** the integration does not yet create its own database file, so there is no application data. However, Home Assistant persists the config entry and its selected options — removing the integration deletes that configuration, and the option values (`horizon_days`, `day_rollover_time`, `panel_idle_timeout`) will be lost on removal.
 
-**Repository operators:** instead of uninstalling, you may git-revert the release merge on `main`, which removes the integration files entirely. End users should use the uninstall path above.
+**Repository operators:** instead of uninstalling, you may git-revert the release merge on `main`, which removes the integration files entirely. End users should use the uninstall path above.

admin/.env.example

@@ -0,0 +1,13 @@
+# NestQuest Admin PWA — runtime configuration (Vite env).
+# Copy to .env (or .env.local) and fill in real values. NEVER commit .env.
+
+# Authentik OIDC provider. Defaults to the issuer below when unset.
+VITE_AUTHENTIK_ISSUER=https://auth.cubecraftlabs.com/application/o/nestquest/
+
+# REQUIRED. OAuth2/OIDC client id of the PUBLIC (PKCE) Authentik application.
+# No default: the app shows a configuration error screen when this is missing.
+# Never set a client_secret — this is a browser SPA using PKCE only.
+VITE_AUTHENTIK_CLIENT_ID=
+
+# NestQuest API base URL.
+VITE_API_BASE_URL=https://nestquest.cubecraftlabs.com

admin/.gitignore

@@ -0,0 +1,2 @@
+node_modules/
+dist/

admin/index.html

@@ -0,0 +1,15 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="UTF-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0, viewport-fit=cover" />
+    <meta name="theme-color" content="#3b3ab8" />
+    <link rel="manifest" href="/manifest.webmanifest" />
+    <link rel="apple-touch-icon" href="/icons/icon-192.png" />
+    <title>NestQuest Admin</title>
+  </head>
+  <body>
+    <div id="root"></div>
+    <script type="module" src="/src/main.tsx"></script>
+  </body>
+</html>

admin/package.json

@@ -0,0 +1,27 @@
+{
+  "name": "nestquest-admin",
+  "private": true,
+  "version": "0.0.0",
+  "type": "module",
+  "scripts": {
+    "dev": "vite",
+    "build": "vite build",
+    "preview": "vite preview",
+    "test": "vitest run"
+  },
+  "dependencies": {
+    "react": "^19.2.0",
+    "react-dom": "^19.2.0"
+  },
+  "devDependencies": {
+    "@testing-library/dom": "^10.4.1",
+    "@testing-library/react": "^16.3.0",
+    "@types/react": "^19.2.0",
+    "@types/react-dom": "^19.2.0",
+    "@vitejs/plugin-react": "^5.0.0",
+    "jsdom": "^30.1.1",
+    "typescript": "^5.9.2",
+    "vite": "^7.1.5",
+    "vitest": "^3.2.4"
+  }
+}

admin/public/manifest.webmanifest

@@ -0,0 +1,14 @@
+{
+  "name": "NestQuest Admin",
+  "short_name": "NestQuest",
+  "start_url": "/",
+  "scope": "/",
+  "display": "standalone",
+  "background_color": "#f4f4f6",
+  "theme_color": "#3b3ab8",
+  "icons": [
+    { "src": "/icons/icon-192.png", "sizes": "192x192", "type": "image/png", "purpose": "any" },
+    { "src": "/icons/icon-512.png", "sizes": "512x512", "type": "image/png", "purpose": "any" },
+    { "src": "/icons/icon-maskable-512.png", "sizes": "512x512", "type": "image/png", "purpose": "maskable" }
+  ]
+}

admin/public/sw.js

@@ -0,0 +1,88 @@
+/* NestQuest Admin service worker — hand-written, served from the site root.
+   Precaches the app shell, serves static assets cache-first, and falls back
+   to the cached shell for navigations when offline. Only same-origin GET
+   requests are handled; cross-origin requests (Authentik, the API host) are
+   never intercepted or cached.
+   The build (vite-sw-plugin.ts) replaces PRECACHE_ASSETS with the hashed
+   bundles referenced by index.html and the revision marker with a content
+   hash, so each release installs a new worker with fresh caches. */
+
+const REVISION = "__NQ_BUILD_REVISION__";
+const CACHE_PREFIX = "nestquest-admin-";
+const SHELL_CACHE = `${CACHE_PREFIX}shell-${REVISION}`;
+const RUNTIME_CACHE = `${CACHE_PREFIX}runtime-${REVISION}`;
+const CURRENT_CACHES = [SHELL_CACHE, RUNTIME_CACHE];
+
+const PRECACHE_ASSETS = [];
+
+const SHELL_URLS = [
+  ...new Set([
+    "/",
+    "/index.html",
+    "/manifest.webmanifest",
+    "/icons/icon-192.png",
+    "/icons/icon-512.png",
+    "/icons/icon-maskable-512.png",
+    ...PRECACHE_ASSETS,
+  ]),
+];
+
+// Request destinations treated as static assets (cache-first). Anything else
+// same-origin (e.g. API calls) goes straight to the network.
+const STATIC_DESTINATIONS = ["script", "style", "image", "font", "manifest"];
+
+self.addEventListener("install", (event) => {
+  event.waitUntil(
+    caches
+      .open(SHELL_CACHE)
+      .then((cache) => cache.addAll(SHELL_URLS))
+      .then(() => self.skipWaiting()),
+  );
+});
+
+self.addEventListener("activate", (event) => {
+  event.waitUntil(
+    caches
+      .keys()
+      .then((keys) =>
+        Promise.all(
+          keys
+            .filter((key) => key.startsWith(CACHE_PREFIX) && !CURRENT_CACHES.includes(key))
+            .map((key) => caches.delete(key)),
+        ),
+      )
+      .then(() => self.clients.claim()),
+  );
+});
+
+self.addEventListener("fetch", (event) => {
+  const request = event.request;
+  if (request.method !== "GET") return;
+  if (new URL(request.url).origin !== self.location.origin) return;
+
+  if (request.mode === "navigate") {
+    event.respondWith(
+      fetch(request).catch(() =>
+        caches.match("/index.html", { cacheName: SHELL_CACHE }).then(
+          (cached) => cached || Response.error(),
+        ),
+      ),
+    );
+    return;
+  }
+
+  if (STATIC_DESTINATIONS.includes(request.destination)) {
+    event.respondWith(cacheFirst(request));
+  }
+});
+
+async function cacheFirst(request) {
+  const cached = await caches.match(request);
+  if (cached) return cached;
+  const response = await fetch(request);
+  if (response.ok && response.type === "basic") {
+    const cache = await caches.open(RUNTIME_CACHE);
+    await cache.put(request, response.clone());
+  }
+  return response;
+}

admin/scripts/generate-icons.mjs

@@ -0,0 +1,80 @@
+// Generates the committed PWA icons under public/icons/ as genuine PNGs.
+// Pure Node (zlib only) — no network, no image dependencies.
+// Run: node scripts/generate-icons.mjs
+import { writeFileSync } from "node:fs";
+import { deflateSync } from "node:zlib";
+import { fileURLToPath } from "node:url";
+
+// Brand tokens (design/tokens/nestquest-admin-tokens.css).
+const BLUE = [0x3b, 0x3a, 0xb8];
+const PURPLE = [0xa0, 0x35, 0xcc];
+const WHITE = [0xff, 0xff, 0xff];
+
+const CRC_TABLE = Array.from({ length: 256 }, (_, n) => {
+  let c = n;
+  for (let k = 0; k < 8; k++) c = c & 1 ? 0xedb88320 ^ (c >>> 1) : c >>> 1;
+  return c >>> 0;
+});
+
+function crc32(buf) {
+  let c = 0xffffffff;
+  for (const b of buf) c = CRC_TABLE[(c ^ b) & 0xff] ^ (c >>> 8);
+  return (c ^ 0xffffffff) >>> 0;
+}
+
+function chunk(type, data) {
+  const len = Buffer.alloc(4);
+  len.writeUInt32BE(data.length);
+  const body = Buffer.concat([Buffer.from(type, "ascii"), data]);
+  const crc = Buffer.alloc(4);
+  crc.writeUInt32BE(crc32(body));
+  return Buffer.concat([len, body, crc]);
+}
+
+function encodePng(size, pixel) {
+  const ihdr = Buffer.alloc(13);
+  ihdr.writeUInt32BE(size, 0);
+  ihdr.writeUInt32BE(size, 4);
+  ihdr[8] = 8; // bit depth
+  ihdr[9] = 2; // colour type: RGB
+  const raw = Buffer.alloc(size * (size * 3 + 1));
+  for (let y = 0; y < size; y++) {
+    const row = y * (size * 3 + 1);
+    raw[row] = 0; // filter: none
+    for (let x = 0; x < size; x++) raw.set(pixel(x, y), row + 1 + x * 3);
+  }
+  return Buffer.concat([
+    Buffer.from([0x89, 0x50, 0x4e, 0x47, 0x0d, 0x0a, 0x1a, 0x0a]),
+    chunk("IHDR", ihdr),
+    chunk("IDAT", deflateSync(raw, { level: 9 })),
+    chunk("IEND", Buffer.alloc(0)),
+  ]);
+}
+
+// Flat brand mark: diagonal blue→purple gradient with a white ring ("nest")
+// around a white dot ("quest"). `scale` shrinks the mark for the maskable
+// safe zone (inner 80% circle).
+function brandMark(size, scale) {
+  const c = size / 2;
+  const outer = size * 0.34 * scale;
+  const inner = size * 0.24 * scale;
+  const dot = size * 0.1 * scale;
+  return (x, y) => {
+    const d = Math.hypot(x + 0.5 - c, y + 0.5 - c);
+    if ((d <= outer && d >= inner) || d <= dot) return WHITE;
+    const t = (x + y) / (2 * (size - 1));
+    return BLUE.map((b, i) => Math.round(b + (PURPLE[i] - b) * t));
+  };
+}
+
+const outDir = new URL("../public/icons/", import.meta.url);
+const icons = [
+  ["icon-192.png", 192, 1],
+  ["icon-512.png", 512, 1],
+  ["icon-maskable-512.png", 512, 0.75],
+];
+for (const [name, size, scale] of icons) {
+  const path = fileURLToPath(new URL(name, outDir));
+  writeFileSync(path, encodePng(size, brandMark(size, scale)));
+  console.log(`wrote ${path}`);
+}

admin/src/App.css

@@ -0,0 +1,134 @@
+/* Shell layout — mobile-first (390x844 reference), plain CubeCraft styling. */
+
+.admin-shell {
+  display: flex;
+  flex-direction: column;
+  min-height: 100%;
+}
+
+.admin-header {
+  background: var(--nq-a-surface);
+  border-bottom: 1px solid var(--nq-a-border);
+  padding: 14px 16px;
+}
+
+.admin-title {
+  margin: 0;
+  font-size: 24px;
+  font-weight: 800;
+  letter-spacing: -0.02em;
+}
+
+.admin-subline {
+  margin: 2px 0 0;
+  font-size: 12px;
+  font-weight: 600;
+  color: var(--nq-a-ink-secondary);
+}
+
+.admin-panel {
+  flex: 1;
+  padding: 14px 16px 92px; /* bottom padding clears the 70px tab bar */
+}
+
+/* A built screen supplies its own header and 92px-padded scroll column. */
+.admin-panel--screen {
+  padding: 0;
+}
+
+.visually-hidden {
+  position: absolute;
+  width: 1px;
+  height: 1px;
+  margin: -1px;
+  padding: 0;
+  overflow: hidden;
+  clip: rect(0 0 0 0);
+  white-space: nowrap;
+  border: 0;
+}
+
+.admin-placeholder {
+  margin: 0;
+  padding: 13px;
+  background: var(--nq-a-surface);
+  border: 1px solid var(--nq-a-border);
+  border-radius: 8px;
+  font-size: 13.5px;
+  font-weight: 600;
+  color: var(--nq-a-ink-secondary);
+}
+
+.admin-tabbar {
+  position: fixed;
+  inset: auto 0 0;
+  display: flex;
+  min-height: calc(var(--nq-a-tabbar-height) + 12px);
+  padding: 8px 4px calc(12px + env(safe-area-inset-bottom));
+  background: var(--nq-a-surface);
+  border-top: 1px solid var(--nq-a-border);
+}
+
+.admin-tab {
+  flex: 1;
+  border: 0;
+  background: none;
+  font-family: inherit;
+  font-size: 12px;
+  font-weight: 600;
+  color: var(--nq-a-ink-secondary);
+  cursor: pointer;
+  padding: 6px 4px;
+}
+
+.admin-tab.active {
+  font-weight: 700;
+  color: var(--nq-brand-blue);
+}
+/* Auth screens (login, errors, refusal). */
+
+.admin-login,
+.admin-error,
+.admin-refusal,
+.admin-loading {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  justify-content: center;
+  gap: 10px;
+  min-height: 100%;
+  padding: 32px 16px;
+  text-align: center;
+}
+
+.admin-login-button {
+  margin-top: 8px;
+  padding: 12px 24px;
+  border: none;
+  border-radius: 8px;
+  background: var(--nq-a-accent, #2563eb);
+  color: #fff;
+  font-size: 15px;
+  font-weight: 700;
+  cursor: pointer;
+}
+
+.admin-error,
+.admin-refusal {
+  color: var(--nq-a-ink, inherit);
+}
+
+.admin-refusal h1,
+.admin-error h1 {
+  margin: 0;
+  font-size: 20px;
+}
+
+.admin-refusal p,
+.admin-error p {
+  margin: 0;
+  max-width: 34em;
+  font-size: 14px;
+  font-weight: 600;
+  color: var(--nq-a-ink-secondary);
+}

admin/src/App.test.tsx

@@ -0,0 +1,39 @@
+import { afterEach, beforeEach, describe, expect, it, vi } from "vitest";
+import { cleanup, fireEvent, render, screen } from "@testing-library/react";
+import App from "./App";
+
+describe("NestQuest Admin shell", () => {
+  beforeEach(() => {
+    // The Today tab fetches the admin snapshot; keep the shell tests offline.
+    vi.stubGlobal("fetch", vi.fn(() => new Promise<Response>(() => {})));
+  });
+
+  afterEach(() => {
+    cleanup();
+    vi.unstubAllGlobals();
+  });
+
+  it("renders the title and all four tab labels", () => {
+    render(<App />);
+
+    expect(screen.getByRole("heading", { name: "NestQuest Admin" })).toBeTruthy();
+    for (const label of ["Today", "Tasks", "Schedule", "History"]) {
+      expect(screen.getByRole("tab", { name: label })).toBeTruthy();
+    }
+  });
+
+  it("starts on the Today screen and switches on tab click", () => {
+    render(<App />);
+
+    expect(screen.getByRole("heading", { name: "Today" })).toBeTruthy();
+
+    fireEvent.click(screen.getByRole("tab", { name: "History" }));
+
+    expect(screen.getByRole("tabpanel").textContent).toContain(
+      "History placeholder",
+    );
+    expect(screen.getByRole("tab", { name: "History" }).getAttribute("aria-selected")).toBe(
+      "true",
+    );
+  });
+});

admin/src/App.tsx

@@ -0,0 +1,57 @@
+import { useState } from "react";
+import "./App.css";
+import TodayTab from "./today/TodayTab";
+
+const TABS = [
+  { id: "today", label: "Today" },
+  { id: "tasks", label: "Tasks" },
+  { id: "schedule", label: "Schedule" },
+  { id: "history", label: "History" },
+] as const;
+
+type TabId = (typeof TABS)[number]["id"];
+
+export default function App() {
+  const [active, setActive] = useState<TabId>("today");
+  // Built screens own their header (ADMIN-SPEC §1); the generic shell header
+  // stays for placeholder tabs and is visually hidden otherwise.
+  const hasScreen = active === "today";
+
+  return (
+    <div className="admin-shell">
+      <header className={hasScreen ? "admin-header visually-hidden" : "admin-header"}>
+        <h1 className="admin-title">NestQuest Admin</h1>
+        <p className="admin-subline">Admin console</p>
+      </header>
+      <main
+        className={hasScreen ? "admin-panel admin-panel--screen" : "admin-panel"}
+        role="tabpanel"
+        aria-labelledby={`tab-${active}`}
+      >
+        {active === "today" ? (
+          <TodayTab />
+        ) : (
+          <p className="admin-placeholder">
+            {TABS.find((tab) => tab.id === active)?.label} placeholder — screens
+            arrive in later tasks.
+          </p>
+        )}
+      </main>
+      <nav className="admin-tabbar" aria-label="Admin sections">
+        {TABS.map((tab) => (
+          <button
+            key={tab.id}
+            id={`tab-${tab.id}`}
+            type="button"
+            role="tab"
+            aria-selected={tab.id === active}
+            className={tab.id === active ? "admin-tab active" : "admin-tab"}
+            onClick={() => setActive(tab.id)}
+          >
+            {tab.label}
+          </button>
+        ))}
+      </nav>
+    </div>
+  );
+}

admin/src/AppRoutes.test.tsx

@@ -0,0 +1,73 @@
+import { afterEach, describe, expect, it, vi } from "vitest";
+import { cleanup, render, screen, waitFor } from "@testing-library/react";
+import AppRoutes from "./AppRoutes";
+import { storeTokens } from "./auth/oidc";
+import { config } from "./config";
+
+// The bundled config reads real env at import time; seed the shared module's
+// clientId directly so AppRoutes sees a configured app in these tests.
+(config as { clientId: string | undefined }).clientId = "test-client-id";
+
+function jsonResponse(body: unknown, status = 200): Response {
+  return new Response(JSON.stringify(body), {
+    status,
+    headers: { "Content-Type": "application/json" },
+  });
+}
+
+describe("AppRoutes auth gating", () => {
+  afterEach(() => {
+    cleanup();
+    sessionStorage.clear();
+    vi.restoreAllMocks();
+    vi.unstubAllGlobals();
+    window.history.replaceState({}, "", "/");
+  });
+
+  it("renders the login screen when unauthenticated at /", () => {
+    render(<AppRoutes />);
+    expect(screen.getByTestId("login-screen")).toBeTruthy();
+    expect(
+      screen.getByRole("button", { name: /sign in with authentik/i }),
+    ).toBeTruthy();
+  });
+
+  it("renders the four-tab shell after a successful authenticated probe", async () => {
+    storeTokens({ access_token: "at-123", expires_in: 600 });
+    const fetchMock = vi.fn().mockResolvedValue(jsonResponse([]));
+    vi.stubGlobal("fetch", fetchMock);
+
+    render(<AppRoutes />);
+
+    await waitFor(() => {
+      expect(screen.getByRole("heading", { name: "NestQuest Admin" })).toBeTruthy();
+    });
+    for (const label of ["Today", "Tasks", "Schedule", "History"]) {
+      expect(screen.getByRole("tab", { name: label })).toBeTruthy();
+    }
+  });
+
+  it("renders the explicit refusal when the API answers 403", async () => {
+    storeTokens({ access_token: "at-123", expires_in: 600 });
+    const fetchMock = vi.fn().mockResolvedValue(new Response("", { status: 403 }));
+    vi.stubGlobal("fetch", fetchMock);
+
+    render(<AppRoutes />);
+
+    await waitFor(() => {
+      expect(screen.getByTestId("refusal-screen")).toBeTruthy();
+    });
+    expect(screen.getByText(/not in the nestquest-admins group/i)).toBeTruthy();
+  });
+
+  it("shows the configuration error screen when the client id is missing", () => {
+    const original = config.clientId;
+    (config as { clientId: string | undefined }).clientId = undefined;
+    try {
+      render(<AppRoutes />);
+      expect(screen.getByTestId("config-error-screen")).toBeTruthy();
+    } finally {
+      (config as { clientId: string | undefined }).clientId = original;
+    }
+  });
+});

admin/src/AppRoutes.tsx

@@ -0,0 +1,176 @@
+/**
+ * Minimal path-based routing without react-router-dom: the app only needs two
+ * paths (`/` shell and `/auth/callback`), so a tiny window.location switch is
+ * enough and keeps the bundle small. Change screens listen to popstate.
+ */
+import { useEffect, useState } from "react";
+import { ConfigError, config } from "./config";
+import {
+  AuthError,
+  buildAuthorizeUrl,
+  clearAuth,
+  handleCallback,
+  isAuthenticated,
+} from "./auth/oidc";
+import { ApiForbiddenError, apiFetch } from "./api/client";
+import AdminShell from "./App";
+
+type Screen =
+  | { kind: "loading" }
+  | { kind: "login" }
+  | { kind: "config-error"; message: string }
+  | { kind: "auth-error"; message: string }
+  | { kind: "refusal"; message: string }
+  | { kind: "app" };
+
+function currentPath(): string {
+  return window.location.pathname.replace(/\/+$/, "") || "/";
+}
+
+async function probeApi(setScreen: (screen: Screen) => void) {
+  // A cheap authenticated probe so a 403 surfaces as an explicit refusal
+  // right after login instead of a silent empty shell.
+  try {
+    await apiFetch("/api/v1/children", {}, config);
+    setScreen({ kind: "app" });
+  } catch (error) {
+    if (error instanceof ConfigError) {
+      setScreen({ kind: "config-error", message: error.message });
+      return;
+    }
+    if (error instanceof ApiForbiddenError) {
+      setScreen({ kind: "refusal", message: error.message });
+      return;
+    }
+    // Network or other failures still allow the shell to render; API screens
+    // handle their own errors in later tasks.
+    setScreen({ kind: "app" });
+  }
+}
+
+function LoginScreen({ onLogin }: { onLogin: () => void }) {
+  return (
+    <div className="admin-login" data-testid="login-screen">
+      <h1 className="admin-title">NestQuest Admin</h1>
+      <p className="admin-subline">Sign in to continue</p>
+      <button type="button" className="admin-login-button" onClick={onLogin}>
+        Sign in with Authentik
+      </button>
+    </div>
+  );
+}
+
+export default function AppRoutes() {
+  const [screen, setScreen] = useState<Screen>({ kind: "loading" });
+
+  useEffect(() => {
+    // Re-evaluate on navigation (popstate) — routing is path based.
+    const onPop = () => setScreen({ kind: "loading" });
+    window.addEventListener("popstate", onPop);
+    return () => window.removeEventListener("popstate", onPop);
+  }, []);
+
+  useEffect(() => {
+    let cancelled = false;
+    const path = currentPath();
+
+    if (!config.clientId) {
+      setScreen({
+        kind: "config-error",
+        message:
+          "Missing VITE_AUTHENTIK_CLIENT_ID configuration. Set it in your .env before building the admin PWA.",
+      });
+      return;
+    }
+
+    if (path === "/auth/callback") {
+      (async () => {
+        try {
+          await handleCallback(window.location.search, config);
+          if (cancelled) return;
+          window.history.replaceState({}, "", "/");
+          await probeApi((next) => !cancelled && setScreen(next));
+        } catch (error) {
+          if (cancelled) return;
+          const message =
+            error instanceof AuthError || error instanceof Error
+              ? error.message
+              : "Authentication failed.";
+          setScreen({ kind: "auth-error", message });
+        }
+      })();
+      return () => {
+        cancelled = true;
+      };
+    }
+
+    if (isAuthenticated()) {
+      void probeApi((next) => !cancelled && setScreen(next));
+    } else {
+      setScreen({ kind: "login" });
+    }
+    return () => {
+      cancelled = true;
+    };
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, []);
+
+  const startLogin = async () => {
+    try {
+      const url = await buildAuthorizeUrl(config);
+      window.location.assign(url);
+    } catch (error) {
+      setScreen({
+        kind: "config-error",
+        message: error instanceof Error ? error.message : "Login failed.",
+      });
+    }
+  };
+
+  switch (screen.kind) {
+    case "loading":
+      return (
+        <div className="admin-loading" role="status" data-testid="loading-screen">
+          Loading…
+        </div>
+      );
+    case "login":
+      return <LoginScreen onLogin={startLogin} />;
+    case "config-error":
+      return (
+        <div className="admin-error" role="alert" data-testid="config-error-screen">
+          <h1>Configuration error</h1>
+          <p>{screen.message}</p>
+        </div>
+      );
+    case "auth-error":
+      return (
+        <div className="admin-error" role="alert" data-testid="auth-error-screen">
+          <h1>Sign-in failed</h1>
+          <p>{screen.message}</p>
+          <button
+            type="button"
+            onClick={() => {
+              clearAuth();
+              window.history.replaceState({}, "", "/");
+              setScreen({ kind: "loading" });
+            }}
+          >
+            Try again
+          </button>
+        </div>
+      );
+    case "refusal":
+      return (
+        <div className="admin-refusal" role="alert" data-testid="refusal-screen">
+          <h1>Access refused</h1>
+          <p>{screen.message}</p>
+          <button type="button" onClick={() => { clearAuth(); window.history.replaceState({}, "", "/"); setScreen({ kind: "login" }); }}>
+            Sign out
+          </button>
+        </div>
+      );
+    case "app":
+      return <AdminShell />;
+  }
+}

admin/src/api/client.test.ts

@@ -0,0 +1,94 @@
+import { afterEach, beforeEach, describe, expect, it, vi } from "vitest";
+import {
+  ApiForbiddenError,
+  ApiUnauthorizedError,
+  apiFetch,
+} from "./client";
+import { storeTokens } from "../auth/oidc";
+import type { AppConfig } from "../config";
+
+const app: AppConfig = {
+  issuer: "https://auth.example.com/application/o/nestquest",
+  clientId: "test-client-id",
+  apiBaseUrl: "https://api.example.com",
+  authorizeEndpoint: "https://auth.example.com/application/o/authorize/",
+  tokenEndpoint: "https://auth.example.com/application/o/token/",
+  userinfoEndpoint: "https://auth.example.com/application/o/userinfo/",
+  endSessionEndpoint: "https://auth.example.com/application/o/nestquest/end-session/",
+  redirectUri: "http://localhost:5173/auth/callback",
+};
+
+function jsonResponse(body: unknown, status = 200): Response {
+  return new Response(JSON.stringify(body), {
+    status,
+    headers: { "Content-Type": "application/json" },
+  });
+}
+
+describe("API client", () => {
+  beforeEach(() => {
+    sessionStorage.clear();
+  });
+
+  afterEach(() => {
+    vi.restoreAllMocks();
+    vi.unstubAllGlobals();
+  });
+
+  it("attaches the Bearer token to API calls", async () => {
+    storeTokens({ access_token: "at-123", expires_in: 600 });
+    const fetchMock = vi.fn().mockResolvedValue(jsonResponse([]));
+
+    await apiFetch("/api/v1/children", {}, app, fetchMock as any);
+
+    expect(fetchMock).toHaveBeenCalledTimes(1);
+    const [url, init] = fetchMock.mock.calls[0];
+    expect(url).toBe("https://api.example.com/api/v1/children");
+    expect(init.headers.Authorization).toBe("Bearer at-123");
+  });
+
+  it("throws ApiForbiddenError on 403 (authenticated but refused)", async () => {
+    storeTokens({ access_token: "at-123", expires_in: 600 });
+    const fetchMock = vi.fn().mockResolvedValue(new Response("", { status: 403 }));
+
+    await expect(
+      apiFetch("/api/v1/children", {}, app, fetchMock as any),
+    ).rejects.toBeInstanceOf(ApiForbiddenError);
+  });
+
+  it("triggers a login redirect on 401 with no refresh token", async () => {
+    storeTokens({ access_token: "stale", expires_in: 600 });
+    const assign = vi.fn();
+    vi.stubGlobal("location", { ...window.location, assign });
+    const fetchMock = vi.fn().mockResolvedValue(new Response("", { status: 401 }));
+
+    await expect(
+      apiFetch("/api/v1/children", {}, app, fetchMock as any),
+    ).rejects.toBeInstanceOf(ApiUnauthorizedError);
+    expect(assign).toHaveBeenCalledTimes(1);
+    const url = new URL(assign.mock.calls[0][0] as string);
+    expect(url.origin + url.pathname).toBe(
+      "https://auth.example.com/application/o/authorize/",
+    );
+    expect(url.searchParams.get("code_challenge_method")).toBe("S256");
+  });
+
+  it("preserves non-401/403 statuses on the post-refresh retry (500 is not mislabeled)", async () => {
+    storeTokens({ access_token: "stale", refresh_token: "rt-1", expires_in: 600 });
+    const fetchMock = vi
+      .fn()
+      .mockResolvedValueOnce(new Response("", { status: 401 })) // initial API call
+      .mockResolvedValueOnce(
+        jsonResponse({ access_token: "fresh", expires_in: 600 }), // refresh grant
+      )
+      .mockResolvedValueOnce(new Response("", { status: 500 })); // retry
+
+    const response = await apiFetch("/api/v1/children", {}, app, fetchMock as any);
+
+    expect(fetchMock).toHaveBeenCalledTimes(3);
+    expect(fetchMock.mock.calls[1][0]).toBe(app.tokenEndpoint);
+    expect(fetchMock.mock.calls[2][1].headers.Authorization).toBe("Bearer fresh");
+    // A server failure must surface as the real status, not ApiUnauthorizedError.
+    expect(response.status).toBe(500);
+  });
+});

admin/src/api/client.ts

@@ -0,0 +1,93 @@
+/**
+ * Minimal fetch wrapper for the NestQuest API.
+ *
+ * - Attaches `Authorization: Bearer <access_token>` when a token is stored.
+ * - 401: not authenticated (or token expired) -> trigger a new login.
+ * - 403: authenticated but refused -> throws ApiForbiddenError so the UI can
+ *   render an explicit refusal message.
+ */
+import { config, type AppConfig } from "../config";
+import {
+  buildAuthorizeUrl,
+  getToken,
+  isExpired,
+  refreshAccessToken,
+} from "../auth/oidc";
+
+export class ApiForbiddenError extends Error {
+  constructor(message = "Your account is not in the nestquest-admins group.") {
+    super(message);
+    this.name = "ApiForbiddenError";
+  }
+}
+
+export class ApiUnauthorizedError extends Error {
+  constructor(message = "Not authenticated.") {
+    super(message);
+    this.name = "ApiUnauthorizedError";
+  }
+}
+
+export interface ApiRequestOptions extends Omit<RequestInit, "headers"> {
+  headers?: Record<string, string>;
+}
+
+/**
+ * Redirect the browser to Authentik to start a new login.
+ * Exported for testing injection.
+ */
+export async function triggerLogin(app: AppConfig = config): Promise<void> {
+  const url = await buildAuthorizeUrl(app);
+  window.location.assign(url);
+}
+
+export async function apiFetch(
+  path: string,
+  options: ApiRequestOptions = {},
+  app: AppConfig = config,
+  fetchImpl: typeof fetch = fetch,
+): Promise<Response> {
+  if (isExpired() && (await refreshAccessToken(app, fetchImpl))) {
+    // token renewed; fall through and use the fresh one
+  }
+
+  const token = getToken();
+  const headers = {
+    ...(options.headers ?? {}),
+    ...(token ? { Authorization: `Bearer ${token}` } : {}),
+  };
+
+  const response = await fetchImpl(`${app.apiBaseUrl}${path}`, {
+    ...options,
+    headers,
+  });
+
+  if (response.status === 401) {
+    // Not authenticated: either no token or an unusable one.
+    if (await refreshAccessToken(app, fetchImpl)) {
+      const retryToken = getToken();
+      const retryResponse = await fetchImpl(`${app.apiBaseUrl}${path}`, {
+        ...options,
+        headers: {
+          ...(options.headers ?? {}),
+          ...(retryToken ? { Authorization: `Bearer ${retryToken}` } : {}),
+        },
+      });
+      if (retryResponse.status === 403) throw new ApiForbiddenError();
+      if (retryResponse.ok) return retryResponse;
+      // Only 401 means "unauthorized"; preserve every other status (e.g. a
+      // 500 from the API) so callers can react to the real response.
+      if (retryResponse.status === 401) throw new ApiUnauthorizedError();
+      return retryResponse;
+    }
+    await triggerLogin(app);
+    throw new ApiUnauthorizedError();
+  }
+
+  if (response.status === 403) {
+    // Authenticated, but Authentik's token does not belong to nestquest-admins.
+    throw new ApiForbiddenError();
+  }
+
+  return response;
+}

admin/src/api/snapshot.ts

@@ -0,0 +1,55 @@
+/**
+ * Typed client for GET /api/v1/admin/snapshot — today's household snapshot
+ * that drives the admin Today tab.
+ */
+import { apiFetch } from "./client";
+
+export type InstanceWindow = "morning" | "afternoon" | "evening";
+export type InstanceState = "open" | "completed" | "missed";
+
+export interface SnapshotInstance {
+  id: number;
+  definition_id: number;
+  child_id: number;
+  title: string;
+  icon: string | null;
+  window: InstanceWindow;
+  /** Local wall-clock "HH:MM", or null when the definition has no due time. */
+  due_time: string | null;
+  state: InstanceState;
+  overdue: boolean;
+  /** UTC ISO timestamp of the completion event, when completed. */
+  completed_at: string | null;
+  on_time: boolean | null;
+}
+
+export interface SnapshotChild {
+  child_id: number;
+  child_name: string;
+  present: boolean;
+  /** "YYYY-MM-DD" of the next present day, or null. */
+  next_present: string | null;
+  due_today: number;
+  completed_today: number;
+  remaining_today: number;
+  completion_pct: number;
+  instances: SnapshotInstance[];
+}
+
+export interface AdminSnapshot {
+  /** "YYYY-MM-DD" in the household's local zone. */
+  today_iso: string;
+  /** 1-based day in the custody cycle. */
+  cycle_day: number;
+  children: SnapshotChild[];
+}
+
+export const SNAPSHOT_PATH = "/api/v1/admin/snapshot";
+
+export async function fetchSnapshot(): Promise<AdminSnapshot> {
+  const response = await apiFetch(SNAPSHOT_PATH);
+  if (!response.ok) {
+    throw new Error(`Snapshot request failed (HTTP ${response.status}).`);
+  }
+  return (await response.json()) as AdminSnapshot;
+}

admin/src/auth/oidc.test.ts

@@ -0,0 +1,173 @@
+import { afterEach, beforeEach, describe, expect, it, vi } from "vitest";
+import {
+  buildAuthorizeUrl,
+  clearAuth,
+  getToken,
+  handleCallback,
+  logout,
+  storeTokens,
+} from "./oidc";
+import type { AppConfig } from "../config";
+
+function testApp(): AppConfig {
+  return {
+    issuer: "https://auth.example.com/application/o/nestquest",
+    clientId: "test-client-id",
+    apiBaseUrl: "https://api.example.com",
+    authorizeEndpoint: "https://auth.example.com/application/o/authorize/",
+    tokenEndpoint: "https://auth.example.com/application/o/token/",
+    userinfoEndpoint: "https://auth.example.com/application/o/userinfo/",
+    endSessionEndpoint: "https://auth.example.com/application/o/nestquest/end-session/",
+    redirectUri: "http://localhost:5173/auth/callback",
+  };
+}
+
+function jsonResponse(body: unknown, status = 200): Response {
+  return new Response(JSON.stringify(body), {
+    status,
+    headers: { "Content-Type": "application/json" },
+  });
+}
+
+describe("OIDC flow", () => {
+  beforeEach(() => {
+    sessionStorage.clear();
+  });
+
+  afterEach(() => {
+    vi.restoreAllMocks();
+  });
+
+  it("buildAuthorizeUrl carries all required params and stores state/verifier", async () => {
+    const app = testApp();
+    const url = new URL(await buildAuthorizeUrl(app));
+
+    expect(url.origin + url.pathname).toBe(app.authorizeEndpoint);
+    expect(url.searchParams.get("response_type")).toBe("code");
+    expect(url.searchParams.get("client_id")).toBe("test-client-id");
+    expect(url.searchParams.get("redirect_uri")).toBe(app.redirectUri);
+    expect(url.searchParams.get("scope")).toBe("openid email profile");
+    expect(url.searchParams.get("code_challenge_method")).toBe("S256");
+    expect(url.searchParams.get("code_challenge")).toMatch(/^[A-Za-z0-9_-]{43}$/);
+    expect(url.searchParams.get("state")).toMatch(/^[A-Za-z0-9_-]+$/);
+
+    expect(sessionStorage.getItem("nestquest.oidc_state")).toBe(
+      url.searchParams.get("state"),
+    );
+    expect(sessionStorage.getItem("nestquest.code_verifier")).toMatch(/^[A-Za-z0-9-._~]{43,128}$/);
+  });
+
+  it("handleCallback rejects a mismatched state", async () => {
+    await buildAuthorizeUrl(testApp());
+    sessionStorage.setItem("nestquest.oidc_state", "different-state");
+
+    const fetchMock = vi.fn();
+    await expect(
+      handleCallback("?code=abc&state=tampered", testApp(), fetchMock as any),
+    ).rejects.toThrow(/state mismatch/i);
+    expect(fetchMock).not.toHaveBeenCalled();
+    expect(getToken()).toBeUndefined();
+  });
+
+  it("handleCallback exchanges the code with the correct form body and stores the token", async () => {
+    await buildAuthorizeUrl(testApp());
+    const verifier = sessionStorage.getItem("nestquest.code_verifier")!;
+    const state = sessionStorage.getItem("nestquest.oidc_state")!;
+
+    const fetchMock = vi.fn().mockResolvedValue(
+      jsonResponse({
+        access_token: "at-123",
+        refresh_token: "rt-456",
+        id_token: "id-789",
+        expires_in: 300,
+      }),
+    );
+    await handleCallback(`?code=abc&state=${state}`, testApp(), fetchMock as any);
+
+    expect(fetchMock).toHaveBeenCalledTimes(1);
+    const [url, init] = fetchMock.mock.calls[0];
+    expect(url).toBe("https://auth.example.com/application/o/token/");
+    expect(init.method).toBe("POST");
+    expect(init.headers["Content-Type"]).toBe("application/x-www-form-urlencoded");
+
+    const body = new URLSearchParams(init.body);
+    expect(body.get("grant_type")).toBe("authorization_code");
+    expect(body.get("code")).toBe("abc");
+    expect(body.get("redirect_uri")).toBe(testApp().redirectUri);
+    expect(body.get("client_id")).toBe("test-client-id");
+    expect(body.get("code_verifier")).toBe(verifier);
+    expect(body.has("client_secret")).toBe(false);
+
+    expect(getToken()).toBe("at-123");
+    // one-time values consumed
+    expect(sessionStorage.getItem("nestquest.oidc_state")).toBeNull();
+    expect(sessionStorage.getItem("nestquest.code_verifier")).toBeNull();
+  });
+
+  it("handleCallback surfaces provider errors", async () => {
+    await expect(
+      handleCallback("?error=access_denied&error_description=nope", testApp(), vi.fn() as any),
+    ).rejects.toThrow(/nope|access_denied/);
+  });
+
+  it("clearAuth removes all stored auth data", () => {
+    storeTokens({ access_token: "a", refresh_token: "r", expires_in: 60 });
+    clearAuth();
+    expect(getToken()).toBeUndefined();
+    expect(sessionStorage.length).toBe(0);
+  });
+
+  it("logout clears auth and redirects to the end-session endpoint", async () => {
+    storeTokens({ access_token: "a", id_token: "idt", expires_in: 60 });
+    const assign = vi.fn();
+    const original = window.location;
+    vi.stubGlobal("location", { ...original, assign, origin: "http://localhost:5173" });
+
+    await logout(testApp());
+
+    expect(assign).toHaveBeenCalledTimes(1);
+    const url = new URL(assign.mock.calls[0][0] as string);
+    expect(url.toString()).toBe(
+      "https://auth.example.com/application/o/nestquest/end-session/?id_token_hint=idt&client_id=test-client-id&post_logout_redirect_uri=http%3A%2F%2Flocalhost%3A5173",
+    );
+    expect(getToken()).toBeUndefined();
+    vi.unstubAllGlobals();
+  });
+
+  it("buildAuthorizeUrl resolves the authorize endpoint via discovery for a non-default issuer", async () => {
+    const issuer = "https://sso.discovery.example/application/o/discovered";
+    const discoveryDoc = {
+      issuer,
+      authorization_endpoint: "https://sso.discovery.example/application/o/authorize/",
+      token_endpoint: "https://sso.discovery.example/application/o/token/",
+      userinfo_endpoint: "https://sso.discovery.example/application/o/userinfo/",
+      end_session_endpoint: `${issuer}/end-session/`,
+      jwks_uri: `${issuer}/jwks/`,
+    };
+    const fetchMock = vi.fn().mockImplementation((url: string) =>
+      Promise.resolve(
+        String(url).endsWith("/.well-known/openid-configuration")
+          ? jsonResponse(discoveryDoc)
+          : jsonResponse({}),
+      ),
+    );
+    const app: AppConfig = {
+      issuer,
+      clientId: "test-client-id",
+      apiBaseUrl: "https://api.example.com",
+      redirectUri: "http://localhost:5173/auth/callback",
+    };
+
+    const url = new URL(await buildAuthorizeUrl(app, fetchMock as any));
+
+    // The authorize endpoint comes from the discovery document — Authentik
+    // serves it outside the app-specific issuer path, so it is NOT
+    // `${issuer}/authorize/` and must never be a hardcoded production host.
+    expect(url.origin + url.pathname).toBe(discoveryDoc.authorization_endpoint);
+    expect(url.searchParams.get("client_id")).toBe("test-client-id");
+    expect(fetchMock).toHaveBeenCalledTimes(1);
+    expect(String(fetchMock.mock.calls[0][0])).toBe(
+      `${issuer}/.well-known/openid-configuration`,
+    );
+  });
+});

admin/src/auth/oidc.ts

@@ -0,0 +1,225 @@
+/**
+ * OIDC authorization-code + PKCE flow for a PUBLIC client.
+ *
+ * Never sends a client_secret anywhere. Tokens are stored in sessionStorage
+ * (per-tab, cleared on tab close) — never localStorage.
+ */
+import { config, resolveEndpoints, type AppConfig, type ResolvedAppConfig } from "../config";
+import {
+  computeCodeChallenge,
+  generateCodeVerifier,
+  generateState,
+} from "./pkce";
+
+const STORAGE_KEYS = {
+  accessToken: "nestquest.access_token",
+  refreshToken: "nestquest.refresh_token",
+  expiresAt: "nestquest.expires_at",
+  idToken: "nestquest.id_token",
+  state: "nestquest.oidc_state",
+  codeVerifier: "nestquest.code_verifier",
+} as const;
+
+export class AuthError extends Error {}
+
+export interface TokenResponse {
+  access_token?: string;
+  refresh_token?: string;
+  id_token?: string;
+  expires_in?: number;
+  token_type?: string;
+}
+
+function makeScopes(): string {
+  return "openid email profile";
+}
+
+/**
+ * Build the Authentik authorization redirect URL, storing state + verifier in
+ * sessionStorage so the callback can validate them. Endpoints are resolved
+ * from the issuer's OIDC discovery document when not set on the config.
+ */
+export async function buildAuthorizeUrl(
+  app: AppConfig = config,
+  fetchImpl: typeof fetch = fetch,
+): Promise<string> {
+  if (!app.clientId) {
+    throw new AuthError(
+      "Missing VITE_AUTHENTIK_CLIENT_ID configuration. Set it in your .env before building the admin PWA.",
+    );
+  }
+  const resolved = await resolveEndpoints(app, fetchImpl);
+  const state = generateState();
+  const codeVerifier = generateCodeVerifier();
+  const codeChallenge = await computeCodeChallenge(codeVerifier);
+
+  sessionStorage.setItem(STORAGE_KEYS.state, state);
+  sessionStorage.setItem(STORAGE_KEYS.codeVerifier, codeVerifier);
+
+  const url = new URL(resolved.authorizeEndpoint);
+  url.searchParams.set("response_type", "code");
+  url.searchParams.set("client_id", app.clientId);
+  url.searchParams.set("redirect_uri", app.redirectUri);
+  url.searchParams.set("scope", makeScopes());
+  url.searchParams.set("state", state);
+  url.searchParams.set("code_challenge", codeChallenge);
+  url.searchParams.set("code_challenge_method", "S256");
+  return url.toString();
+}
+
+/**
+ * Handle the OAuth callback: validate state, exchange the code at the token
+ * endpoint (PKCE, form-urlencoded, no client_secret), store tokens.
+ */
+export async function handleCallback(
+  query: URLSearchParams | string = window.location.search,
+  app: AppConfig = config,
+  fetchImpl: typeof fetch = fetch,
+): Promise<void> {
+  const params =
+    typeof query === "string" ? new URLSearchParams(query) : query;
+
+  const providerError = params.get("error");
+  if (providerError) {
+    throw new AuthError(
+      params.get("error_description") || `Provider returned error: ${providerError}`,
+    );
+  }
+
+  const code = params.get("code");
+  const state = params.get("state");
+  if (!code || !state) {
+    throw new AuthError("Callback is missing the code or state parameter.");
+  }
+
+  const storedState = sessionStorage.getItem(STORAGE_KEYS.state);
+  const codeVerifier = sessionStorage.getItem(STORAGE_KEYS.codeVerifier);
+  if (!storedState || storedState !== state || !codeVerifier) {
+    throw new AuthError("State mismatch — possible CSRF; refusing to log in.");
+  }
+
+  if (!app.clientId) {
+    throw new AuthError(
+      "Missing VITE_AUTHENTIK_CLIENT_ID configuration. Set it in your .env before building the admin PWA.",
+    );
+  }
+
+  const resolved: ResolvedAppConfig = await resolveEndpoints(app, fetchImpl);
+
+  const body = new URLSearchParams({
+    grant_type: "authorization_code",
+    code,
+    redirect_uri: app.redirectUri,
+    client_id: app.clientId,
+    code_verifier: codeVerifier,
+  });
+
+  const response = await fetchImpl(resolved.tokenEndpoint, {
+    method: "POST",
+    headers: { "Content-Type": "application/x-www-form-urlencoded" },
+    body: body.toString(),
+  });
+  if (!response.ok) {
+    throw new AuthError(`Token exchange failed with HTTP ${response.status}`);
+  }
+  const tokens = (await response.json()) as TokenResponse;
+  if (!tokens.access_token) {
+    throw new AuthError("Token response did not include an access token.");
+  }
+
+  storeTokens(tokens);
+  // One-time use values are consumed on success.
+  sessionStorage.removeItem(STORAGE_KEYS.state);
+  sessionStorage.removeItem(STORAGE_KEYS.codeVerifier);
+}
+
+export function storeTokens(tokens: TokenResponse): void {
+  sessionStorage.setItem(STORAGE_KEYS.accessToken, tokens.access_token!);
+  if (tokens.refresh_token) {
+    sessionStorage.setItem(STORAGE_KEYS.refreshToken, tokens.refresh_token);
+  }
+  if (tokens.id_token) {
+    sessionStorage.setItem(STORAGE_KEYS.idToken, tokens.id_token);
+  }
+  if (typeof tokens.expires_in === "number") {
+    sessionStorage.setItem(
+      STORAGE_KEYS.expiresAt,
+      String(Date.now() + tokens.expires_in * 1000),
+    );
+  }
+}
+
+export function getToken(): string | undefined {
+  return sessionStorage.getItem(STORAGE_KEYS.accessToken) ?? undefined;
+}
+
+export function getRefreshToken(): string | undefined {
+  return sessionStorage.getItem(STORAGE_KEYS.refreshToken) ?? undefined;
+}
+
+export function getIdToken(): string | undefined {
+  return sessionStorage.getItem(STORAGE_KEYS.idToken) ?? undefined;
+}
+
+export function isAuthenticated(): boolean {
+  return Boolean(getToken());
+}
+
+/** True once the stored access token has passed its (approximate) expiry. */
+export function isExpired(): boolean {
+  const expiresAt = sessionStorage.getItem(STORAGE_KEYS.expiresAt);
+  if (!expiresAt) return false;
+  return Date.now() >= Number(expiresAt);
+}
+
+/**
+ * Refresh the access token with the refresh token grant. Returns false when
+ * no refresh token is stored or the grant fails (caller should re-login).
+ */
+export async function refreshAccessToken(
+  app: AppConfig = config,
+  fetchImpl: typeof fetch = fetch,
+): Promise<boolean> {
+  const refreshToken = getRefreshToken();
+  if (!refreshToken || !app.clientId) return false;
+
+  const resolved = await resolveEndpoints(app, fetchImpl);
+
+  const body = new URLSearchParams({
+    grant_type: "refresh_token",
+    refresh_token: refreshToken,
+    client_id: app.clientId,
+  });
+
+  const response = await fetchImpl(resolved.tokenEndpoint, {
+    method: "POST",
+    headers: { "Content-Type": "application/x-www-form-urlencoded" },
+    body: body.toString(),
+  });
+  if (!response.ok) return false;
+  const tokens = (await response.json()) as TokenResponse;
+  if (!tokens.access_token) return false;
+  storeTokens(tokens);
+  return true;
+}
+
+export function clearAuth(): void {
+  for (const key of Object.values(STORAGE_KEYS)) {
+    sessionStorage.removeItem(key);
+  }
+}
+
+/** Sign out: clear local auth, then send the browser to the end-session endpoint. */
+export async function logout(
+  app: AppConfig = config,
+  fetchImpl: typeof fetch = fetch,
+): Promise<void> {
+  const resolved = await resolveEndpoints(app, fetchImpl);
+  const idTokenHint = getIdToken();
+  clearAuth();
+  const params = new URLSearchParams();
+  if (idTokenHint) params.set("id_token_hint", idTokenHint);
+  if (app.clientId) params.set("client_id", app.clientId);
+  params.set("post_logout_redirect_uri", window.location.origin);
+  window.location.assign(`${resolved.endSessionEndpoint}?${params.toString()}`);
+}

admin/src/auth/pkce.test.ts

@@ -0,0 +1,41 @@
+import { afterEach, beforeEach, describe, expect, it, vi } from "vitest";
+import {
+  base64UrlEncode,
+  computeCodeChallenge,
+  generateCodeVerifier,
+  generateState,
+  isLikelyValidVerifier,
+} from "./pkce";
+
+describe("PKCE helpers", () => {
+  it("base64UrlEncode has no padding and url-safe characters", () => {
+    // bytes chosen to force "+" and "/" and padding in plain base64
+    const bytes = new Uint8Array([0xfb, 0xff, 0xbf, 0xff]);
+    const encoded = base64UrlEncode(bytes);
+    expect(encoded).not.toMatch(/[+/=]/);
+  });
+
+  it("computes the RFC 7636 appendix-B S256 vector", async () => {
+    const verifier =
+      "dBjftJeZ4CVP-mB92K27uhbUJU1p1r_wW1gFWFOEjXk";
+    const challenge = await computeCodeChallenge(verifier);
+    expect(challenge).toBe("E9Melhoa2OwvFrEMTJguCHaoeK1t8URWbuGJSstw-cM");
+  });
+
+  it("generates verifiers with valid charset and length", () => {
+    for (let i = 0; i < 20; i++) {
+      const verifier = generateCodeVerifier();
+      expect(isLikelyValidVerifier(verifier)).toBe(true);
+    }
+  });
+
+  it("rejects verifiers outside 43-128 chars or with reserved chars", () => {
+    expect(isLikelyValidVerifier("short")).toBe(false);
+    expect(isLikelyValidVerifier("a".repeat(129))).toBe(false);
+    expect(isLikelyValidVerifier("a".repeat(43) + "+")).toBe(false);
+  });
+
+  it("generates distinct random states", () => {
+    expect(generateState()).not.toBe(generateState());
+  });
+});

admin/src/auth/pkce.ts

@@ -0,0 +1,55 @@
+/**
+ * PKCE (RFC 7636) helpers for a public SPA client.
+ *
+ * Uses the Web Crypto API, which requires a SECURE CONTEXT: the app must be
+ * served over https or http://localhost, otherwise crypto.subtle is
+ * unavailable and login cannot work.
+ */
+
+const VERIFIER_CHARSET =
+  "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-._~";
+
+/** base64url-encode bytes with NO padding. */
+export function base64UrlEncode(bytes: Uint8Array): string {
+  let binary = "";
+  for (const byte of bytes) {
+    binary += String.fromCharCode(byte);
+  }
+  return btoa(binary).replace(/\+/g, "-").replace(/\//g, "_").replace(/=+$/, "");
+}
+
+function randomBase64Url(byteLength: number): string {
+  const bytes = new Uint8Array(byteLength);
+  crypto.getRandomValues(bytes);
+  return base64UrlEncode(bytes);
+}
+
+/**
+ * Random code_verifier: 43-128 chars, unreserved charset only.
+ * 32 random bytes -> 43 base64url chars, which is the minimum allowed length.
+ */
+export function generateCodeVerifier(): string {
+  return randomBase64Url(32);
+}
+
+/** S256 code_challenge = base64url(SHA-256(verifier)), no padding. */
+export async function computeCodeChallenge(verifier: string): Promise<string> {
+  const digest = await crypto.subtle.digest(
+    "SHA-256",
+    new TextEncoder().encode(verifier),
+  );
+  return base64UrlEncode(new Uint8Array(digest));
+}
+
+/** Random opaque state value for CSRF protection. */
+export function generateState(): string {
+  return randomBase64Url(16);
+}
+
+export function isLikelyValidVerifier(verifier: string): boolean {
+  return (
+    verifier.length >= 43 &&
+    verifier.length <= 128 &&
+    [...verifier].every((char) => VERIFIER_CHARSET.includes(char))
+  );
+}

admin/src/config.test.ts

@@ -0,0 +1,215 @@
+import { afterEach, describe, expect, it, vi } from "vitest";
+import {
+  ConfigError,
+  discoveryUrlForIssuer,
+  readConfig,
+  resolveEndpoints,
+  resolveEndpointsFromDiscovery,
+  type AppConfig,
+} from "./config";
+
+function jsonResponse(body: unknown, status = 200): Response {
+  return new Response(JSON.stringify(body), {
+    status,
+    headers: { "Content-Type": "application/json" },
+  });
+}
+
+// Mirrors Authentik's layout: authorize/token/userinfo live OUTSIDE the
+// application-specific issuer path, end-session/jwks under it.
+function discoveryDocument(issuer: string) {
+  const normalized = issuer.replace(/\/+$/, "");
+  const origin = new URL(normalized).origin;
+  return {
+    issuer,
+    authorization_endpoint: `${origin}/application/o/authorize/`,
+    token_endpoint: `${origin}/application/o/token/`,
+    userinfo_endpoint: `${origin}/application/o/userinfo/`,
+    end_session_endpoint: `${normalized}/end-session/`,
+    jwks_uri: `${normalized}/jwks/`,
+  };
+}
+
+describe("config", () => {
+  afterEach(() => {
+    vi.restoreAllMocks();
+  });
+
+  it("readConfig keeps the production issuer as the default", () => {
+    const cfg = readConfig({});
+    expect(cfg.issuer).toBe("https://auth.cubecraftlabs.com/application/o/nestquest");
+    expect(cfg.clientId).toBeUndefined();
+  });
+
+  it("readConfig normalizes a trailing slash off a custom issuer", () => {
+    expect(
+      readConfig({ VITE_AUTHENTIK_ISSUER: "https://sso.custom.example/application/o/custom/" })
+        .issuer,
+    ).toBe("https://sso.custom.example/application/o/custom");
+  });
+
+  it("readConfig hardcodes no OIDC endpoints — they come from discovery", () => {
+    const cfg = readConfig({});
+    expect(cfg.authorizeEndpoint).toBeUndefined();
+    expect(cfg.tokenEndpoint).toBeUndefined();
+    expect(cfg.userinfoEndpoint).toBeUndefined();
+    expect(cfg.endSessionEndpoint).toBeUndefined();
+    expect(cfg.jwksUri).toBeUndefined();
+  });
+
+  it("builds the discovery URL for issuers with and without a trailing slash", () => {
+    expect(discoveryUrlForIssuer("https://sso.example.com/application/o/app/")).toBe(
+      "https://sso.example.com/application/o/app/.well-known/openid-configuration",
+    );
+    expect(discoveryUrlForIssuer("https://sso.example.com/application/o/app")).toBe(
+      "https://sso.example.com/application/o/app/.well-known/openid-configuration",
+    );
+  });
+
+  it("resolves every endpoint from the discovery document of a non-default issuer", async () => {
+    const issuer = "https://sso.other-host.example/application/o/other-app";
+    const doc = discoveryDocument(issuer);
+    const fetchMock = vi.fn().mockResolvedValue(jsonResponse(doc));
+    const app: AppConfig = {
+      issuer,
+      clientId: "client-id",
+      apiBaseUrl: "https://api.example.com",
+      redirectUri: "http://localhost:5173/auth/callback",
+    };
+
+    const resolved = await resolveEndpoints(app, fetchMock as unknown as typeof fetch);
+
+    expect(fetchMock).toHaveBeenCalledTimes(1);
+    expect(fetchMock).toHaveBeenCalledWith(
+      "https://sso.other-host.example/application/o/other-app/.well-known/openid-configuration",
+    );
+    // Every endpoint comes verbatim from the (non-default) discovery document.
+    expect(resolved.authorizeEndpoint).toBe(doc.authorization_endpoint);
+    expect(resolved.tokenEndpoint).toBe(doc.token_endpoint);
+    expect(resolved.userinfoEndpoint).toBe(doc.userinfo_endpoint);
+    expect(resolved.endSessionEndpoint).toBe(doc.end_session_endpoint);
+    expect(resolved.jwksUri).toBe(doc.jwks_uri);
+    // Proves no hardcoded production host leaked into the resolved endpoints.
+    for (const endpoint of [
+      resolved.authorizeEndpoint,
+      resolved.tokenEndpoint,
+      resolved.userinfoEndpoint,
+      resolved.endSessionEndpoint,
+      resolved.jwksUri,
+    ]) {
+      expect(endpoint).not.toMatch(/cubecraftlabs/);
+    }
+  });
+
+  it("resolves discovery for an issuer configured with a trailing slash", async () => {
+    const issuer = "https://sso.slashy.example/application/o/slashy/";
+    const doc = discoveryDocument(issuer);
+    const fetchMock = vi.fn().mockResolvedValue(jsonResponse(doc));
+
+    const resolved = await resolveEndpointsFromDiscovery(issuer, fetchMock as any);
+
+    expect(fetchMock).toHaveBeenCalledWith(
+      "https://sso.slashy.example/application/o/slashy/.well-known/openid-configuration",
+    );
+    expect(resolved.authorizeEndpoint).toBe(doc.authorization_endpoint);
+    expect(resolved.endSessionEndpoint).toBe(doc.end_session_endpoint);
+  });
+
+  it("caches discovery per issuer for the session", async () => {
+    const issuer = "https://sso.cached.example/application/o/cached";
+    const fetchMock = vi.fn().mockResolvedValue(jsonResponse(discoveryDocument(issuer)));
+
+    const first = await resolveEndpointsFromDiscovery(issuer, fetchMock as any);
+    const second = await resolveEndpointsFromDiscovery(issuer, fetchMock as any);
+
+    expect(fetchMock).toHaveBeenCalledTimes(1);
+    expect(second).toBe(first);
+  });
+
+  it("surfaces a clear configuration error when discovery returns an HTTP error", async () => {
+    const issuer = "https://sso.http-error.example/application/o/broken";
+    const fetchMock = vi.fn().mockResolvedValue(new Response("", { status: 500 }));
+
+    const error = await resolveEndpointsFromDiscovery(issuer, fetchMock as any).then(
+      () => null,
+      (error: unknown) => error,
+    );
+
+    expect(error).toBeInstanceOf(ConfigError);
+    expect((error as Error).message).toContain(issuer);
+    expect((error as Error).message).toContain("HTTP 500");
+  });
+
+  it("surfaces a clear configuration error when discovery is unreachable", async () => {
+    const issuer = "https://sso.unreachable.example/application/o/unreachable";
+    const fetchMock = vi.fn().mockRejectedValue(new TypeError("network down"));
+
+    await expect(
+      resolveEndpointsFromDiscovery(issuer, fetchMock as any),
+    ).rejects.toBeInstanceOf(ConfigError);
+  });
+
+  it("surfaces a clear configuration error when the discovery document is incomplete", async () => {
+    const issuer = "https://sso.incomplete.example/application/o/incomplete";
+    const doc = discoveryDocument(issuer) as Record<string, string>;
+    delete doc.end_session_endpoint;
+    const fetchMock = vi.fn().mockResolvedValue(jsonResponse(doc));
+
+    await expect(
+      resolveEndpointsFromDiscovery(issuer, fetchMock as any),
+    ).rejects.toThrow(/end_session_endpoint/);
+  });
+
+  it("rejects a discovery document advertising a different issuer", async () => {
+    const issuer = "https://sso.mismatch.example/application/o/mismatch";
+    const doc = {
+      ...discoveryDocument(issuer),
+      issuer: "https://sso.elsewhere.example/application/o/elsewhere",
+    };
+    const fetchMock = vi.fn().mockResolvedValue(jsonResponse(doc));
+
+    await expect(
+      resolveEndpointsFromDiscovery(issuer, fetchMock as any),
+    ).rejects.toThrow(/issuer mismatch/i);
+  });
+
+  it("the bundled config resolves its endpoints from discovery at runtime", async () => {
+    const issuer = "https://sso.bundled.example/application/o/bundled";
+    const fetchMock = vi.fn().mockResolvedValue(jsonResponse(discoveryDocument(issuer)));
+    const bundled = readConfig({ VITE_AUTHENTIK_ISSUER: `${issuer}/`, VITE_AUTHENTIK_CLIENT_ID: "bundled-client" });
+    expect(bundled.authorizeEndpoint).toBeUndefined();
+
+    const resolved = await resolveEndpoints(bundled, fetchMock as any);
+
+    expect(resolved.authorizeEndpoint).toBe(
+      "https://sso.bundled.example/application/o/authorize/",
+    );
+    expect(resolved.tokenEndpoint).toBe("https://sso.bundled.example/application/o/token/");
+    expect(resolved.userinfoEndpoint).toBe(
+      "https://sso.bundled.example/application/o/userinfo/",
+    );
+    expect(resolved.endSessionEndpoint).toBe(
+      "https://sso.bundled.example/application/o/bundled/end-session/",
+    );
+    expect(resolved.jwksUri).toBe("https://sso.bundled.example/application/o/bundled/jwks/");
+  });
+
+  it("does not re-fetch discovery when the config already carries endpoints", async () => {
+    const app: AppConfig = {
+      issuer: "https://auth.example.com/application/o/nestquest",
+      clientId: "client-id",
+      apiBaseUrl: "https://api.example.com",
+      authorizeEndpoint: "https://auth.example.com/application/o/authorize/",
+      tokenEndpoint: "https://auth.example.com/application/o/token/",
+      userinfoEndpoint: "https://auth.example.com/application/o/userinfo/",
+      endSessionEndpoint: "https://auth.example.com/application/o/nestquest/end-session/",
+      redirectUri: "http://localhost:5173/auth/callback",
+    };
+    const fetchMock = vi.fn();
+
+    const resolved = await resolveEndpoints(app, fetchMock as any);
+
+    expect(fetchMock).not.toHaveBeenCalled();
+    expect(resolved).toBe(app);
+  });
+});

admin/src/config.ts

@@ -0,0 +1,221 @@
+/**
+ * Runtime configuration, read from Vite env (import.meta.env).
+ * See .env.example for the variables and their defaults.
+ *
+ * OIDC endpoints are NOT hardcoded here. They are resolved lazily from the
+ * issuer's OIDC discovery document (see resolveEndpoints), because Authentik
+ * serves authorize/token/userinfo OUTSIDE the application-specific issuer
+ * path (issuer is /application/o/<slug>/, authorize is /application/o/authorize/).
+ * Both hardcoding the production host and naively concatenating onto the
+ * issuer would break non-default issuers; discovery is the only correct way.
+ */
+
+export interface AppConfig {
+  issuer: string;
+  clientId: string | undefined;
+  apiBaseUrl: string;
+  /** Resolved from the issuer's OIDC discovery document — see resolveEndpoints(). */
+  authorizeEndpoint?: string;
+  tokenEndpoint?: string;
+  userinfoEndpoint?: string;
+  endSessionEndpoint?: string;
+  jwksUri?: string;
+  redirectUri: string;
+}
+
+/** AppConfig whose OIDC endpoints have been filled in by resolveEndpoints(). */
+export type ResolvedAppConfig = AppConfig &
+  Required<
+    Pick<
+      AppConfig,
+      "authorizeEndpoint" | "tokenEndpoint" | "userinfoEndpoint" | "endSessionEndpoint"
+    >
+  >;
+
+export interface DiscoveredEndpoints {
+  issuer: string;
+  authorizeEndpoint: string;
+  tokenEndpoint: string;
+  userinfoEndpoint: string;
+  endSessionEndpoint: string;
+  jwksUri: string;
+}
+
+/** Raised when OIDC discovery fails or the configuration is unusable. */
+export class ConfigError extends Error {
+  constructor(message: string) {
+    super(message);
+    this.name = "ConfigError";
+  }
+}
+
+const REQUIRED_ENDPOINT_NAMES = [
+  "authorizeEndpoint",
+  "tokenEndpoint",
+  "userinfoEndpoint",
+  "endSessionEndpoint",
+] as const;
+
+export function readConfig(env: Record<string, string | undefined> = import.meta.env as any): AppConfig {
+  const issuer = (
+    env.VITE_AUTHENTIK_ISSUER || "https://auth.cubecraftlabs.com/application/o/nestquest/"
+  ).replace(/\/$/, "");
+  const clientId = env.VITE_AUTHENTIK_CLIENT_ID;
+  const apiBaseUrl = env.VITE_API_BASE_URL || "https://nestquest.cubecraftlabs.com";
+
+  return {
+    issuer,
+    // No default: a missing client id must surface as a configuration error
+    // screen, not a broken redirect to Authentik.
+    clientId: clientId || undefined,
+    apiBaseUrl,
+    // authorize/token/userinfo/end-session endpoints are resolved from the
+    // issuer's discovery document at runtime — never hardcoded here.
+    redirectUri: `${window.location.origin}/auth/callback`,
+  };
+}
+
+export const config: AppConfig = readConfig();
+
+interface DiscoveryDocument {
+  issuer?: unknown;
+  authorization_endpoint?: unknown;
+  token_endpoint?: unknown;
+  userinfo_endpoint?: unknown;
+  end_session_endpoint?: unknown;
+  jwks_uri?: unknown;
+}
+
+function normalizeIssuer(issuer: string): string {
+  return issuer.replace(/\/+$/, "");
+}
+
+function nonEmptyString(value: unknown): string | undefined {
+  return typeof value === "string" && value.length > 0 ? value : undefined;
+}
+
+/** Discovery document location for an issuer, tolerant of a trailing slash. */
+export function discoveryUrlForIssuer(issuer: string): string {
+  return `${normalizeIssuer(issuer)}/.well-known/openid-configuration`;
+}
+
+async function fetchDiscoveredEndpoints(
+  issuer: string,
+  fetchImpl: typeof fetch,
+): Promise<DiscoveredEndpoints> {
+  const normalizedIssuer = normalizeIssuer(issuer);
+  const discoveryUrl = `${normalizedIssuer}/.well-known/openid-configuration`;
+
+  let response: Response;
+  try {
+    response = await fetchImpl(discoveryUrl);
+  } catch (error) {
+    const reason = error instanceof Error ? error.message : String(error);
+    throw new ConfigError(
+      `OIDC discovery request to ${discoveryUrl} failed (${reason}). ` +
+        "Check VITE_AUTHENTIK_ISSUER and network reachability.",
+    );
+  }
+  if (!response.ok) {
+    throw new ConfigError(
+      `OIDC discovery failed: ${discoveryUrl} returned HTTP ${response.status}. ` +
+        "Check VITE_AUTHENTIK_ISSUER.",
+    );
+  }
+
+  let doc: DiscoveryDocument;
+  try {
+    doc = (await response.json()) as DiscoveryDocument;
+  } catch {
+    throw new ConfigError(
+      `OIDC discovery document at ${discoveryUrl} is not valid JSON. Check VITE_AUTHENTIK_ISSUER.`,
+    );
+  }
+
+  const authorizationEndpoint = nonEmptyString(doc.authorization_endpoint);
+  const tokenEndpoint = nonEmptyString(doc.token_endpoint);
+  const userinfoEndpoint = nonEmptyString(doc.userinfo_endpoint);
+  const endSessionEndpoint = nonEmptyString(doc.end_session_endpoint);
+  const jwksUri = nonEmptyString(doc.jwks_uri);
+  const discoveredIssuer = nonEmptyString(doc.issuer);
+
+  const endpointFields: Array<[string, string | undefined]> = [
+    ["authorization_endpoint", authorizationEndpoint],
+    ["token_endpoint", tokenEndpoint],
+    ["userinfo_endpoint", userinfoEndpoint],
+    ["end_session_endpoint", endSessionEndpoint],
+    ["jwks_uri", jwksUri],
+  ];
+  const missing = endpointFields.filter(([, value]) => !value).map(([name]) => name);
+  if (missing.length > 0) {
+    throw new ConfigError(
+      `OIDC discovery document at ${discoveryUrl} is missing: ${missing.join(", ")}. ` +
+        "The issuer must point at an OIDC provider that publishes these endpoints.",
+    );
+  }
+
+  if (discoveredIssuer && normalizeIssuer(discoveredIssuer) !== normalizedIssuer) {
+    throw new ConfigError(
+      `OIDC discovery issuer mismatch: ${discoveryUrl} advertises "${discoveredIssuer}" ` +
+        `but VITE_AUTHENTIK_ISSUER is "${normalizedIssuer}".`,
+    );
+  }
+
+  return {
+    issuer: normalizedIssuer,
+    authorizeEndpoint: authorizationEndpoint!,
+    tokenEndpoint: tokenEndpoint!,
+    userinfoEndpoint: userinfoEndpoint!,
+    endSessionEndpoint: endSessionEndpoint!,
+    jwksUri: jwksUri!,
+  };
+}
+
+/**
+ * Session cache: one discovery fetch per issuer per SPA session. Failed
+ * lookups are evicted so a transient network error can be retried instead of
+ * poisoning the whole session.
+ */
+const discoveryCache = new Map<string, Promise<DiscoveredEndpoints>>();
+
+export function resolveEndpointsFromDiscovery(
+  issuer: string,
+  fetchImpl: typeof fetch = fetch,
+): Promise<DiscoveredEndpoints> {
+  const normalizedIssuer = normalizeIssuer(issuer);
+  const cached = discoveryCache.get(normalizedIssuer);
+  if (cached) return cached;
+
+  const pending = fetchDiscoveredEndpoints(normalizedIssuer, fetchImpl);
+  discoveryCache.set(normalizedIssuer, pending);
+  pending.catch(() => {
+    discoveryCache.delete(normalizedIssuer);
+  });
+  return pending;
+}
+
+/**
+ * Return `app` with all OIDC endpoints filled in. When the config already
+ * carries them (pre-resolved config, tests) this is a no-op; otherwise the
+ * issuer's discovery document is fetched (cached for the session) and its
+ * authorization/token/userinfo/end-session/jwks endpoints are used.
+ */
+export async function resolveEndpoints(
+  app: AppConfig,
+  fetchImpl: typeof fetch = fetch,
+): Promise<ResolvedAppConfig> {
+  const missing = REQUIRED_ENDPOINT_NAMES.filter((name) => !app[name]);
+  if (missing.length === 0) {
+    return app as ResolvedAppConfig;
+  }
+
+  const discovered = await resolveEndpointsFromDiscovery(app.issuer, fetchImpl);
+  return {
+    ...app,
+    authorizeEndpoint: discovered.authorizeEndpoint,
+    tokenEndpoint: discovered.tokenEndpoint,
+    userinfoEndpoint: discovered.userinfoEndpoint,
+    endSessionEndpoint: discovered.endSessionEndpoint,
+    jwksUri: discovered.jwksUri,
+  };
+}

admin/src/index.css

@@ -0,0 +1,60 @@
+/* NestQuest Admin — global tokens + base.
+   Plain CubeCraft styling, mobile-first, 390x844 reference
+   (design/ADMIN-SPEC.md). Values mirror design/tokens/nestquest-admin-tokens.css,
+   re-scoped to :root for the standalone PWA. */
+
+:root {
+  --nq-brand-blue: #3b3ab8;
+  --nq-brand-purple: #a035cc;
+  --nq-brand-gradient: linear-gradient(135deg, var(--nq-brand-blue), var(--nq-brand-purple));
+  --nq-brand-gradient-h: linear-gradient(90deg, var(--nq-brand-blue), var(--nq-brand-purple));
+
+  --nq-a-page: #f4f4f6;
+  --nq-a-surface: #ffffff;
+  --nq-a-border: #e4e4ea;
+  --nq-a-divider: #ededf1;
+
+  --nq-a-ink: #18181d;
+  --nq-a-ink-secondary: #52525e;
+  --nq-a-ink-tertiary: #70707e;
+
+  --nq-a-success: #15803d;
+  --nq-a-danger: #dc2626;
+  --nq-a-danger-strong: #b91c1c;
+  --nq-a-info-bg: #dbeafe;
+  --nq-a-info-ink: #1e3a8a;
+  --nq-a-info-icon: #1d4ed8;
+
+  --nq-a-font: Nunito, system-ui, sans-serif;
+  --nq-a-size-screen: 24px;
+  --nq-a-size-stat: 22px;
+  --nq-a-size-meta: 11px;
+
+  --nq-a-density-gap: 10px;
+  --nq-a-density-card-pad: 13px;
+  --nq-a-density-row-pad: 11px 13px;
+  --nq-a-density-radius: 8px;
+
+  --nq-a-tabbar-height: 70px;
+  --nq-a-tap-min: 44px;
+  --nq-a-radius-pill: 9999px;
+  --nq-a-progress-height: 6px;
+}
+
+* {
+  box-sizing: border-box;
+}
+
+html,
+body,
+#root {
+  margin: 0;
+  height: 100%;
+}
+
+body {
+  font-family: var(--nq-a-font);
+  background: var(--nq-a-page);
+  color: var(--nq-a-ink);
+  -webkit-font-smoothing: antialiased;
+}

admin/src/main.tsx

@@ -0,0 +1,13 @@
+import { StrictMode } from "react";
+import { createRoot } from "react-dom/client";
+import AppRoutes from "./AppRoutes";
+import "./index.css";
+import { registerServiceWorker } from "./pwa/register";
+
+createRoot(document.getElementById("root")!).render(
+  <StrictMode>
+    <AppRoutes />
+  </StrictMode>,
+);
+
+void registerServiceWorker();

admin/src/pwa/pwa.test.ts

@@ -0,0 +1,396 @@
+import { existsSync, readFileSync } from "node:fs";
+import { dirname, resolve } from "node:path";
+import { fileURLToPath } from "node:url";
+import { afterEach, describe, expect, it, vi } from "vitest";
+import {
+  REVISION_MARKER,
+  STATIC_PRECACHE_FILES,
+  injectServiceWorker,
+} from "../../vite-sw-plugin";
+import { registerServiceWorker } from "./register";
+
+const adminRoot = resolve(dirname(fileURLToPath(import.meta.url)), "../..");
+const adminPath = (rel: string) => resolve(adminRoot, rel);
+const publicPath = (urlPath: string) => adminPath(`public${urlPath}`);
+
+interface ManifestIcon {
+  src: string;
+  sizes: string;
+  type: string;
+  purpose?: string;
+}
+
+const manifest = JSON.parse(readFileSync(publicPath("/manifest.webmanifest"), "utf8"));
+const icons: ManifestIcon[] = manifest.icons;
+const swSource = readFileSync(publicPath("/sw.js"), "utf8");
+
+const sizeOf = (icon: ManifestIcon) => Number(icon.sizes.split("x")[0]);
+const purposes = (icon: ManifestIcon) => (icon.purpose ?? "any").split(/\s+/);
+
+describe("web app manifest", () => {
+  it("meets the installability criteria", () => {
+    expect(manifest.name).toBe("NestQuest Admin");
+    expect(manifest.short_name).toBe("NestQuest");
+    expect(manifest.start_url).toBe("/");
+    expect(manifest.scope).toBe("/");
+    expect(manifest.display).toBe("standalone");
+    expect(manifest.background_color).toMatch(/^#[0-9a-f]{6}$/i);
+    expect(manifest.theme_color).toMatch(/^#[0-9a-f]{6}$/i);
+
+    const any = icons.filter((i) => purposes(i).includes("any"));
+    expect(any.some((i) => sizeOf(i) >= 192)).toBe(true);
+    expect(any.some((i) => sizeOf(i) >= 512)).toBe(true);
+    expect(icons.some((i) => purposes(i).includes("maskable"))).toBe(true);
+  });
+
+  it("uses the admin design token colours", () => {
+    const css = readFileSync(adminPath("src/index.css"), "utf8");
+    expect(css).toContain(`--nq-brand-blue: ${manifest.theme_color};`);
+    expect(css).toContain(`--nq-a-page: ${manifest.background_color};`);
+  });
+
+  it.each(icons.map((i) => [i.src, i] as const))(
+    "icon %s is a real PNG of its declared size",
+    (_src, icon) => {
+      const path = publicPath(icon.src);
+      expect(existsSync(path)).toBe(true);
+      const png = readFileSync(path);
+      expect([...png.subarray(0, 8)]).toEqual([0x89, 0x50, 0x4e, 0x47, 0x0d, 0x0a, 0x1a, 0x0a]);
+      expect(png.toString("ascii", 12, 16)).toBe("IHDR");
+      const [w, h] = icon.sizes.split("x").map(Number);
+      expect(png.readUInt32BE(16)).toBe(w);
+      expect(png.readUInt32BE(20)).toBe(h);
+      expect(icon.type).toBe("image/png");
+    },
+  );
+});
+
+describe("index.html and entry point", () => {
+  const html = readFileSync(adminPath("index.html"), "utf8");
+
+  it("links the manifest, theme colour and apple touch icon", () => {
+    expect(html).toContain('<link rel="manifest" href="/manifest.webmanifest" />');
+    expect(html).toContain(`<meta name="theme-color" content="${manifest.theme_color}" />`);
+    expect(html).toContain('<link rel="apple-touch-icon" href="/icons/icon-192.png" />');
+  });
+
+  it("main.tsx registers the service worker", () => {
+    const main = readFileSync(adminPath("src/main.tsx"), "utf8");
+    expect(main).toMatch(/import \{ registerServiceWorker \} from "\.\/pwa\/register"/);
+    expect(main).toMatch(/registerServiceWorker\(\)/);
+  });
+});
+
+// Minimal service-worker global scope: runs public/sw.js against in-memory
+// caches and a stubbed network, so handler behaviour is checked without I/O.
+function loadServiceWorker(
+  network: (url: string) => Promise<FakeResponse>,
+  source: string = swSource,
+) {
+  const listeners: Record<string, (event: any) => void> = {};
+  const stores = new Map<string, Map<string, FakeResponse>>();
+  const openStore = (name: string) => {
+    if (!stores.has(name)) stores.set(name, new Map());
+    return stores.get(name)!;
+  };
+  const keyOf = (req: string | { url: string }) =>
+    new URL(typeof req === "string" ? req : req.url, "https://admin.test").href;
+  const fetchFn = vi.fn((req: string | { url: string }) => network(keyOf(req)));
+
+  const caches = {
+    open: async (name: string) => {
+      const store = openStore(name);
+      return {
+        addAll: async (urls: string[]) => {
+          for (const u of urls) store.set(keyOf(u), await network(keyOf(u)));
+        },
+        put: async (req: { url: string }, res: FakeResponse) => void store.set(keyOf(req), res),
+      };
+    },
+    keys: async () => [...stores.keys()],
+    delete: async (name: string) => stores.delete(name),
+    match: async (req: string | { url: string }, opts?: { cacheName?: string }) => {
+      const names = opts?.cacheName ? [opts.cacheName] : [...stores.keys()];
+      for (const n of names) {
+        const hit = stores.get(n)?.get(keyOf(req));
+        if (hit) return hit;
+      }
+      return undefined;
+    },
+  };
+  const self = {
+    location: new URL("https://admin.test/"),
+    addEventListener: (type: string, fn: (event: any) => void) => (listeners[type] = fn),
+    skipWaiting: vi.fn(async () => undefined),
+    clients: { claim: vi.fn(async () => undefined) },
+  };
+  const ResponseStub = { error: () => new FakeResponse("", false, "error") };
+  new Function("self", "caches", "fetch", "Response", source)(self, caches, fetchFn, ResponseStub);
+
+  const dispatch = async (type: string, init: object = {}) => {
+    let pending: Promise<unknown> | undefined;
+    const event = {
+      ...init,
+      waitUntil: (p: Promise<unknown>) => (pending = p),
+      respondWith: (p: Promise<unknown>) => (pending = p),
+    };
+    listeners[type](event);
+    return { responded: pending !== undefined, result: await pending };
+  };
+  return { listeners, stores, self, fetchFn, dispatch, openStore };
+}
+
+class FakeResponse {
+  constructor(
+    readonly body: string,
+    readonly ok = true,
+    readonly type = "basic",
+  ) {}
+  clone() {
+    return new FakeResponse(this.body, this.ok, this.type);
+  }
+}
+
+const request = (url: string, extra: object = {}) => ({
+  url: new URL(url, "https://admin.test").href,
+  method: "GET",
+  mode: "cors",
+  destination: "",
+  ...extra,
+});
+
+describe("service worker (public/sw.js)", () => {
+  it("is a static asset served from the site root", () => {
+    expect(existsSync(publicPath("/sw.js"))).toBe(true);
+    expect(swSource).toMatch(/const SHELL_CACHE = /);
+    expect(swSource).toMatch(/addEventListener\("install"/);
+    expect(swSource).toMatch(/addEventListener\("activate"/);
+    expect(swSource).toMatch(/addEventListener\("fetch"/);
+  });
+
+  it("precaches the shell on install, prunes stale caches on activate", async () => {
+    const sw = loadServiceWorker(async (url) => new FakeResponse(`net:${url}`));
+    sw.openStore("nestquest-admin-shell-v0");
+
+    await sw.dispatch("install");
+    expect(sw.self.skipWaiting).toHaveBeenCalled();
+    const precached = [...sw.stores.values()].flatMap((s) => [...s.keys()]);
+    for (const path of ["/", "/index.html", "/manifest.webmanifest", ...icons.map((i) => i.src)]) {
+      expect(precached).toContain(`https://admin.test${path}`);
+    }
+
+    await sw.dispatch("activate");
+    expect(sw.stores.has("nestquest-admin-shell-v0")).toBe(false);
+    expect(sw.self.clients.claim).toHaveBeenCalled();
+  });
+
+  it("serves the cached shell for navigations when offline", async () => {
+    let online = true;
+    const sw = loadServiceWorker(async (url) => {
+      if (!online) throw new TypeError("Failed to fetch");
+      return new FakeResponse(`net:${url}`);
+    });
+    await sw.dispatch("install");
+    online = false;
+
+    const { result } = await sw.dispatch("fetch", {
+      request: request("/children/42", { mode: "navigate", destination: "document" }),
+    });
+    expect((result as FakeResponse).body).toBe("net:https://admin.test/index.html");
+  });
+
+  it("serves static assets cache-first and fills the runtime cache", async () => {
+    const sw = loadServiceWorker(async (url) => new FakeResponse(`net:${url}`));
+    const asset = request("/assets/index-abc123.js", { destination: "script" });
+
+    const first = await sw.dispatch("fetch", { request: asset });
+    expect((first.result as FakeResponse).body).toBe("net:https://admin.test/assets/index-abc123.js");
+    expect(sw.fetchFn).toHaveBeenCalledTimes(1);
+
+    const second = await sw.dispatch("fetch", { request: asset });
+    expect((second.result as FakeResponse).body).toBe("net:https://admin.test/assets/index-abc123.js");
+    expect(sw.fetchFn).toHaveBeenCalledTimes(1);
+  });
+
+  it("never handles cross-origin, non-GET or non-static requests", async () => {
+    const sw = loadServiceWorker(async (url) => new FakeResponse(`net:${url}`));
+    const cases = [
+      request("https://auth.example.com/logo.png", { destination: "image" }),
+      request("/assets/app.js", { destination: "script", method: "POST" }),
+      request("/api/admin/children"),
+    ];
+    for (const req of cases) {
+      const { responded } = await sw.dispatch("fetch", { request: req });
+      expect(responded).toBe(false);
+    }
+    expect(sw.fetchFn).not.toHaveBeenCalled();
+  });
+});
+
+// A Vite-style built index.html referencing hashed bundles.
+const builtIndexHtml = (hash: string) => `<!doctype html>
+<html lang="en">
+  <head>
+    <link rel="manifest" href="/manifest.webmanifest" />
+    <link rel="apple-touch-icon" href="/icons/icon-192.png" />
+    <script type="module" crossorigin src="/assets/index-${hash}.js"></script>
+    <link rel="modulepreload" crossorigin href="/assets/vendor-${hash}.js">
+    <link rel="stylesheet" crossorigin href="/assets/index-${hash}.css">
+    <link rel="preconnect" href="https://auth.example.com" />
+  </head>
+  <body><div id="root"></div></body>
+</html>`;
+
+// Same-origin script/link URLs of an HTML document, parsed independently of
+// the build plugin so the regression check does not trust its own extractor.
+const referencedAssets = (html: string) =>
+  [...new DOMParser().parseFromString(html, "text/html").querySelectorAll("script[src], link[href]")]
+    .map((el) => new URL(el.getAttribute("src") ?? el.getAttribute("href")!, "https://admin.test/"))
+    .filter((url) => url.origin === "https://admin.test")
+    .map((url) => url.href);
+
+// The unhashed files the build hashes into the revision, read from public/.
+const staticFiles = STATIC_PRECACHE_FILES.map((path) => ({
+  path,
+  bytes: readFileSync(publicPath(`/${path}`)),
+}));
+const revisionOf = (src: string) => /const REVISION = "([0-9a-f]+)";/.exec(src)?.[1];
+
+describe("build-time service worker injection", () => {
+  it("precaches every asset the cached index.html references on install (PWA-001)", async () => {
+    const html = builtIndexHtml("Ab12Cd34");
+    const built = injectServiceWorker(html, swSource, staticFiles);
+    const sw = loadServiceWorker(async (url) =>
+      new FakeResponse(url.endsWith("/index.html") ? html : `net:${url}`),
+    built);
+
+    await sw.dispatch("install");
+    const shell = [...sw.stores.entries()].find(([name]) => name.startsWith("nestquest-admin-shell-"));
+    expect(shell).toBeDefined();
+    const [, shellStore] = shell!;
+
+    const cachedHtml = shellStore.get("https://admin.test/index.html")!.body;
+    const assets = referencedAssets(cachedHtml);
+    expect(assets).toEqual(
+      expect.arrayContaining([
+        "https://admin.test/assets/index-Ab12Cd34.js",
+        "https://admin.test/assets/vendor-Ab12Cd34.js",
+        "https://admin.test/assets/index-Ab12Cd34.css",
+      ]),
+    );
+    for (const asset of assets) expect([...shellStore.keys()]).toContain(asset);
+    expect([...shellStore.keys()]).not.toContain("https://auth.example.com/");
+  });
+
+  it("derives a new revision for different index.html content (PWA-002)", () => {
+    const a = injectServiceWorker(builtIndexHtml("aaaa1111"), swSource, staticFiles);
+    const b = injectServiceWorker(builtIndexHtml("bbbb2222"), swSource, staticFiles);
+
+    expect(a).not.toContain(REVISION_MARKER);
+    expect(b).not.toContain(REVISION_MARKER);
+    expect(revisionOf(a)).toMatch(/^[0-9a-f]{12}$/);
+    expect(revisionOf(b)).toMatch(/^[0-9a-f]{12}$/);
+    expect(revisionOf(a)).not.toBe(revisionOf(b));
+    expect(injectServiceWorker(builtIndexHtml("aaaa1111"), swSource, staticFiles)).toBe(a);
+  });
+
+  it("derives a new revision when only a precached static file changes (PWA-002)", () => {
+    const html = builtIndexHtml("aaaa1111");
+    const base = revisionOf(injectServiceWorker(html, swSource, staticFiles));
+    const withChanged = (path: string) =>
+      staticFiles.map((f) =>
+        f.path === path ? { path, bytes: Buffer.concat([f.bytes, Buffer.from([0])]) } : f,
+      );
+
+    expect(revisionOf(injectServiceWorker(html, swSource, [...staticFiles].reverse()))).toBe(base);
+    for (const path of STATIC_PRECACHE_FILES) {
+      const changed = revisionOf(injectServiceWorker(html, swSource, withChanged(path)));
+      expect(changed, path).toMatch(/^[0-9a-f]{12}$/);
+      expect(changed, path).not.toBe(base);
+    }
+  });
+
+  it("hashes every unhashed URL sw.js precaches (PWA-002)", () => {
+    const shellUrls = [...swSource.matchAll(/^\s*"(\/[^"]*)",$/gm)].map((m) => m[1]);
+    const fixed = shellUrls.filter((url) => url !== "/" && url !== "/index.html");
+    expect(fixed.map((url) => url.slice(1)).sort()).toEqual([...STATIC_PRECACHE_FILES].sort());
+  });
+
+  it("names both caches after the build revision (PWA-002)", async () => {
+    const built = injectServiceWorker(builtIndexHtml("aaaa1111"), swSource, staticFiles);
+    const revision = /const REVISION = "([0-9a-f]+)";/.exec(built)![1];
+    const sw = loadServiceWorker(async (url) => new FakeResponse(`net:${url}`), built);
+
+    await sw.dispatch("install");
+    await sw.dispatch("fetch", { request: request("/assets/late.js", { destination: "script" }) });
+    expect([...sw.stores.keys()].sort()).toEqual([
+      `nestquest-admin-runtime-${revision}`,
+      `nestquest-admin-shell-${revision}`,
+    ]);
+  });
+
+  it("fails fast when sw.js lacks the placeholders", () => {
+    expect(() => injectServiceWorker(builtIndexHtml("x"), "const SHELL_URLS = [];", staticFiles)).toThrow();
+  });
+
+  it("activation deletes only stale nestquest-admin caches (PWA-003)", async () => {
+    const built = injectServiceWorker(builtIndexHtml("aaaa1111"), swSource, staticFiles);
+    const sw = loadServiceWorker(async (url) => new FakeResponse(`net:${url}`), built);
+    for (const name of [
+      "nestquest-admin-shell-old",
+      "nestquest-admin-runtime-old",
+      "some-other-app-cache",
+    ]) {
+      sw.openStore(name);
+    }
+
+    await sw.dispatch("install");
+    await sw.dispatch("activate");
+    const names = [...sw.stores.keys()];
+    expect(names).not.toContain("nestquest-admin-shell-old");
+    expect(names).not.toContain("nestquest-admin-runtime-old");
+    expect(names).toContain("some-other-app-cache");
+    expect(names.some((n) => n.startsWith("nestquest-admin-shell-") && n !== "nestquest-admin-shell-old")).toBe(true);
+  });
+});
+
+describe("registerServiceWorker", () => {
+  afterEach(() => {
+    vi.unstubAllEnvs();
+    vi.unstubAllGlobals();
+    vi.restoreAllMocks();
+  });
+
+  const stubServiceWorker = (register: ReturnType<typeof vi.fn>) =>
+    vi.stubGlobal("navigator", { ...navigator, serviceWorker: { register } });
+
+  it("does not register outside production builds", async () => {
+    const register = vi.fn();
+    stubServiceWorker(register);
+    expect(import.meta.env.PROD).toBe(false);
+    await registerServiceWorker();
+    expect(register).not.toHaveBeenCalled();
+  });
+
+  it("registers /sw.js in production", async () => {
+    vi.stubEnv("PROD", true);
+    const register = vi.fn().mockResolvedValue({});
+    stubServiceWorker(register);
+    await registerServiceWorker();
+    expect(register).toHaveBeenCalledWith("/sw.js", { scope: "/" });
+  });
+
+  it("logs instead of throwing when registration fails", async () => {
+    vi.stubEnv("PROD", true);
+    stubServiceWorker(vi.fn().mockRejectedValue(new Error("boom")));
+    const error = vi.spyOn(console, "error").mockImplementation(() => {});
+    await expect(registerServiceWorker()).resolves.toBeUndefined();
+    expect(error).toHaveBeenCalled();
+  });
+
+  it("does nothing when the browser lacks service workers", async () => {
+    vi.stubEnv("PROD", true);
+    vi.stubGlobal("navigator", {});
+    await expect(registerServiceWorker()).resolves.toBeUndefined();
+  });
+});

admin/src/pwa/register.ts

@@ -0,0 +1,13 @@
+/**
+ * Service worker registration for the installable admin PWA.
+ * Registers /sw.js only in production builds, so dev servers and tests never
+ * run a worker. Failures are logged, never thrown — the app works without it.
+ */
+export async function registerServiceWorker(): Promise<void> {
+  if (!import.meta.env.PROD || !("serviceWorker" in navigator)) return;
+  try {
+    await navigator.serviceWorker.register("/sw.js", { scope: "/" });
+  } catch (error) {
+    console.error("Service worker registration failed:", error);
+  }
+}

admin/src/today/TodayTab.css

@@ -0,0 +1,300 @@
+/* Today tab — compact density (design/ADMIN-SPEC.md §2). Mobile-first at the
+   390x844 reference; on wider viewports the column is capped and centred. */
+
+.today-screen {
+  width: 100%;
+  max-width: 640px;
+  margin: 0 auto;
+}
+
+/* §2.1 header */
+.today-header {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 12px;
+  background: var(--nq-a-surface);
+  border-bottom: 1px solid var(--nq-a-border);
+  padding: 14px 16px;
+}
+
+.today-title {
+  margin: 0;
+  font-size: var(--nq-a-size-screen);
+  font-weight: 800;
+  letter-spacing: -0.02em;
+}
+
+.today-sub {
+  margin: 2px 0 0;
+  min-height: 1.4em;
+  font-size: 12px;
+  font-weight: 600;
+  color: var(--nq-a-ink-secondary);
+}
+
+.today-icon-button {
+  flex: none;
+  display: grid;
+  place-items: center;
+  width: 36px;
+  height: 36px;
+  padding: 0;
+  border: 1px solid var(--nq-a-border);
+  border-radius: var(--nq-a-density-radius);
+  background: var(--nq-a-surface);
+  color: var(--nq-a-ink-secondary);
+  cursor: pointer;
+}
+
+/* Scroll column: 14px 16px, bottom 92px (set inline, ADMIN-SPEC §1). */
+.today-scroll {
+  display: flex;
+  flex-direction: column;
+  gap: var(--nq-a-density-gap);
+  padding: 14px 16px;
+}
+
+.today-card {
+  background: var(--nq-a-surface);
+  border: 1px solid var(--nq-a-border);
+  border-radius: var(--nq-a-density-radius);
+}
+
+.today-list {
+  margin: 0;
+  padding: 0;
+  list-style: none;
+}
+
+.today-list > li + li {
+  border-top: 1px solid var(--nq-a-divider);
+}
+
+/* §2.2 stat row */
+.today-stats {
+  display: grid;
+  grid-template-columns: repeat(3, 1fr);
+  gap: 8px;
+}
+
+.today-stat {
+  padding: 12px;
+  background: var(--nq-a-surface);
+  border: 1px solid var(--nq-a-border);
+  border-radius: var(--nq-a-density-radius);
+}
+
+.today-stat-value {
+  font-size: var(--nq-a-size-stat);
+  font-weight: 800;
+  line-height: 1.1;
+}
+
+.today-stat-value--done {
+  color: var(--nq-brand-blue);
+}
+
+.today-stat-value--remaining {
+  color: var(--nq-a-ink);
+}
+
+.today-stat-value--overdue {
+  color: var(--nq-a-danger);
+}
+
+.today-stat-label {
+  margin-top: 2px;
+  font-size: 10px;
+  font-weight: 600;
+  text-transform: uppercase;
+  letter-spacing: 0.08em;
+  color: var(--nq-a-ink-secondary);
+}
+
+/* §2.3 child rows */
+.today-child {
+  display: flex;
+  align-items: center;
+  gap: 10px;
+  min-height: var(--nq-a-tap-min);
+  padding: var(--nq-a-density-row-pad);
+}
+
+.today-avatar {
+  flex: none;
+  display: grid;
+  place-items: center;
+  width: 30px;
+  height: 30px;
+  border-radius: 7px;
+  background: var(--nq-brand-gradient);
+  color: #fff;
+  font-size: 13px;
+  font-weight: 800;
+}
+
+.today-child--away .today-avatar {
+  background: #9898a8;
+}
+
+.today-child-text {
+  flex: 1;
+  min-width: 0;
+}
+
+.today-child-name {
+  font-size: 14px;
+  font-weight: 700;
+}
+
+.today-child-meta {
+  font-size: var(--nq-a-size-meta);
+  font-weight: 600;
+  color: var(--nq-a-ink-secondary);
+}
+
+.today-child-meta--done {
+  color: var(--nq-a-success);
+}
+
+.today-progress {
+  flex: none;
+  width: 82px;
+  height: var(--nq-a-progress-height);
+  border-radius: var(--nq-a-radius-pill);
+  background: var(--nq-a-divider);
+  overflow: hidden;
+}
+
+.today-progress-fill {
+  height: 100%;
+  border-radius: inherit;
+  background: var(--nq-brand-gradient-h);
+}
+
+/* §2.5 needs attention */
+.today-section-label {
+  margin: 6px 0 -2px;
+  font-size: 11px;
+  font-weight: 700;
+  text-transform: uppercase;
+  letter-spacing: 0.08em;
+  color: var(--nq-a-ink-secondary);
+}
+
+.today-event {
+  display: flex;
+  align-items: center;
+  gap: 10px;
+  min-height: var(--nq-a-tap-min);
+  padding: var(--nq-a-density-row-pad);
+}
+
+.today-event-glyph {
+  flex: none;
+  display: flex;
+  color: var(--nq-a-success);
+}
+
+.today-event-glyph--overdue {
+  color: var(--nq-a-danger);
+}
+
+.today-event-text {
+  flex: 1;
+  min-width: 0;
+}
+
+.today-event-title {
+  font-size: 13px;
+  font-weight: 700;
+}
+
+.today-event-meta {
+  font-size: var(--nq-a-size-meta);
+  font-weight: 600;
+  color: var(--nq-a-ink-secondary);
+}
+
+.today-event-meta--overdue {
+  color: var(--nq-a-danger);
+}
+
+.today-action {
+  flex: none;
+  min-height: var(--nq-a-tap-min);
+  padding: 0 4px;
+  border: 0;
+  background: none;
+  font-family: inherit;
+  font-size: 12.5px;
+  font-weight: 700;
+  cursor: pointer;
+}
+
+.today-action--done {
+  color: var(--nq-brand-blue);
+}
+
+.today-action--undo {
+  color: var(--nq-brand-purple);
+}
+
+.today-empty {
+  padding: var(--nq-a-density-card-pad);
+  font-size: 13px;
+  font-weight: 600;
+  color: var(--nq-a-ink-secondary);
+}
+
+/* §2.6 permission note */
+.today-note {
+  display: flex;
+  align-items: flex-start;
+  gap: 8px;
+  padding: 10px 12px;
+  border-radius: var(--nq-a-density-radius);
+  background: var(--nq-a-info-bg);
+  color: var(--nq-a-info-ink);
+  font-size: 11.5px;
+  font-weight: 600;
+}
+
+.today-note-glyph {
+  flex: none;
+  display: flex;
+  color: var(--nq-a-info-icon);
+}
+
+/* Loading / error */
+.today-status {
+  padding: 24px 13px;
+  background: var(--nq-a-surface);
+  border: 1px solid var(--nq-a-border);
+  border-radius: var(--nq-a-density-radius);
+  text-align: center;
+  font-size: 13.5px;
+  font-weight: 600;
+  color: var(--nq-a-ink-secondary);
+}
+
+.today-status--error {
+  color: var(--nq-a-danger-strong);
+}
+
+.today-status--error p {
+  margin: 0 0 10px;
+}
+
+.today-retry {
+  padding: 8px 16px;
+  border: 1px solid var(--nq-a-border);
+  border-radius: var(--nq-a-density-radius);
+  background: var(--nq-a-surface);
+  color: var(--nq-a-ink);
+  font-family: inherit;
+  font-size: 13px;
+  font-weight: 700;
+  cursor: pointer;
+}

admin/src/today/TodayTab.test.tsx

@@ -0,0 +1,223 @@
+import { afterAll, afterEach, beforeAll, beforeEach, describe, expect, it, vi } from "vitest";
+import { cleanup, fireEvent, render, screen, within } from "@testing-library/react";
+import TodayTab, { PERMISSION_NOTE } from "./TodayTab";
+import type { AdminSnapshot, SnapshotInstance } from "../api/snapshot";
+import { storeTokens } from "../auth/oidc";
+
+function instance(overrides: Partial<SnapshotInstance>): SnapshotInstance {
+  return {
+    id: 0,
+    definition_id: 1,
+    child_id: 1,
+    title: "Quest",
+    icon: null,
+    window: "morning",
+    due_time: null,
+    state: "open",
+    overdue: false,
+    completed_at: null,
+    on_time: null,
+    ...overrides,
+  };
+}
+
+const SNAPSHOT: AdminSnapshot = {
+  today_iso: "2026-09-23",
+  cycle_day: 5,
+  children: [
+    {
+      child_id: 1,
+      child_name: "Declan",
+      present: true,
+      next_present: null,
+      due_today: 7,
+      completed_today: 3,
+      remaining_today: 4,
+      completion_pct: 43,
+      instances: [
+        instance({ id: 11, title: "Brush teeth", due_time: "07:30", overdue: true }),
+        instance({
+          id: 12,
+          title: "Make bed",
+          state: "completed",
+          completed_at: "2026-09-23T11:04:00Z",
+          on_time: true,
+        }),
+        instance({ id: 13, title: "Homework", window: "afternoon", due_time: "16:00" }),
+        // Overdue but already completed: not counted as overdue.
+        instance({
+          id: 14,
+          title: "Pack bag",
+          state: "completed",
+          overdue: true,
+          completed_at: "2026-09-23T10:00:00Z",
+          on_time: false,
+        }),
+      ],
+    },
+    {
+      child_id: 2,
+      child_name: "Maeve",
+      present: true,
+      next_present: null,
+      due_today: 4,
+      completed_today: 4,
+      remaining_today: 0,
+      completion_pct: 100,
+      instances: [],
+    },
+    {
+      child_id: 3,
+      child_name: "Rory",
+      present: false,
+      next_present: "2026-10-01",
+      due_today: 0,
+      completed_today: 0,
+      remaining_today: 0,
+      completion_pct: 0,
+      instances: [],
+    },
+  ],
+};
+
+function jsonResponse(body: unknown, status = 200): Response {
+  return new Response(JSON.stringify(body), {
+    status,
+    headers: { "Content-Type": "application/json" },
+  });
+}
+
+let fetchMock: ReturnType<typeof vi.fn>;
+
+async function renderReady() {
+  fetchMock.mockResolvedValue(jsonResponse(SNAPSHOT));
+  render(<TodayTab />);
+  await screen.findByText("Declan");
+}
+
+describe("TodayTab", () => {
+  beforeAll(() => {
+    // A negative-offset zone: `new Date("2026-09-23")` would read as Sep 22 here.
+    vi.stubEnv("TZ", "America/Los_Angeles");
+  });
+
+  afterAll(() => {
+    vi.unstubAllEnvs();
+  });
+
+  beforeEach(() => {
+    sessionStorage.clear();
+    storeTokens({ access_token: "at-123", expires_in: 600 });
+    fetchMock = vi.fn();
+    vi.stubGlobal("fetch", fetchMock);
+  });
+
+  afterEach(() => {
+    cleanup();
+    vi.unstubAllGlobals();
+  });
+
+  it("fetches the admin snapshot with the Bearer token", async () => {
+    await renderReady();
+    const [url, init] = fetchMock.mock.calls[0];
+    expect(String(url)).toMatch(/\/api\/v1\/admin\/snapshot$/);
+    expect(init.headers.Authorization).toBe("Bearer at-123");
+  });
+
+  it("header shows the weekday, date and cycle day", async () => {
+    await renderReady();
+    expect(screen.getByRole("heading", { name: "Today" })).toBeTruthy();
+    expect(screen.getByText("Wednesday, September 23 · cycle day 5 of 14")).toBeTruthy();
+    expect(screen.getByRole("button", { name: "Settings" })).toBeTruthy();
+  });
+
+  it("stat row shows done, remaining and overdue totals", async () => {
+    await renderReady();
+    expect(screen.getByTestId("stat-done").textContent).toBe("7Done");
+    expect(screen.getByTestId("stat-remaining").textContent).toBe("4Remaining");
+    expect(screen.getByTestId("stat-overdue").textContent).toBe("1Overdue");
+  });
+
+  it("present child row shows progress meta and fill", async () => {
+    await renderReady();
+    const row = screen.getByTestId("child-1");
+    expect(within(row).getByText("3 of 7 · 1 overdue")).toBeTruthy();
+    const bar = within(row).getByRole("progressbar");
+    expect(bar.getAttribute("aria-valuenow")).toBe("43");
+    expect((bar.firstElementChild as HTMLElement).style.width).toBe("43%");
+    expect(row.className).not.toContain("today-child--away");
+  });
+
+  it("all-done child renders the success state", async () => {
+    await renderReady();
+    const meta = within(screen.getByTestId("child-2")).getByText("4 of 4 · all done");
+    expect(meta.className).toContain("today-child-meta--done");
+  });
+
+  it("away child shows the return date and the flat avatar", async () => {
+    await renderReady();
+    const row = screen.getByTestId("child-3");
+    expect(within(row).getByText("Away · returns Oct 1")).toBeTruthy();
+    expect(row.className).toContain("today-child--away");
+    expect(within(row).getByTestId("child-avatar").textContent).toBe("R");
+  });
+
+  it("needs-attention lists overdue and completed rows with their actions", async () => {
+    await renderReady();
+    const list = screen.getByRole("list", { name: "Needs attention" });
+    const overdue = within(list).getByTestId("attention-11");
+    expect(within(overdue).getByText("Brush teeth · Declan")).toBeTruthy();
+    expect(within(overdue).getByText("Overdue since 7:30 AM")).toBeTruthy();
+    expect(within(overdue).getByRole("button", { name: "Mark done" })).toBeTruthy();
+
+    const completed = within(list).getByTestId("attention-12");
+    expect(within(completed).getByText("Make bed · Declan")).toBeTruthy();
+    // 11:04Z is 4:04 AM in Los Angeles (PDT).
+    expect(within(completed).getByText("Completed 4:04 AM")).toBeTruthy();
+    expect(within(completed).getByRole("button", { name: "Undo" })).toBeTruthy();
+
+    // Open, not-overdue instances do not need attention.
+    expect(within(list).queryByTestId("attention-13")).toBeNull();
+    // No actor in the payload, so no "from panel".
+    expect(list.textContent).not.toContain("from panel");
+  });
+
+  it("permission note carries the exact copy", async () => {
+    await renderReady();
+    expect(PERMISSION_NOTE).toBe(
+      "Undo is admin-only. A panel tap can never reverse a completion.",
+    );
+    expect(screen.getByTestId("permission-note").textContent).toBe(PERMISSION_NOTE);
+  });
+
+  it("scroll column ends with 92px bottom padding", async () => {
+    await renderReady();
+    expect(screen.getByTestId("today-scroll").style.paddingBottom).toBe("92px");
+  });
+
+  it("shows a loading state while the snapshot is in flight", () => {
+    fetchMock.mockReturnValue(new Promise<Response>(() => {}));
+    render(<TodayTab />);
+    expect(screen.getByTestId("today-loading").textContent).toContain("Loading");
+    expect(screen.getByTestId("today-scroll").style.paddingBottom).toBe("92px");
+  });
+
+  it("shows an error state on a failed fetch and retries", async () => {
+    fetchMock.mockResolvedValueOnce(new Response("boom", { status: 500 }));
+    render(<TodayTab />);
+    const error = await screen.findByTestId("today-error");
+    expect(error.getAttribute("role")).toBe("alert");
+    expect(error.textContent).toContain("could not be loaded");
+
+    fetchMock.mockResolvedValueOnce(jsonResponse(SNAPSHOT));
+    fireEvent.click(screen.getByRole("button", { name: "Try again" }));
+    expect(await screen.findByText("Declan")).toBeTruthy();
+  });
+
+  it("shows the refusal message when the API answers 403", async () => {
+    fetchMock.mockResolvedValueOnce(new Response("", { status: 403 }));
+    render(<TodayTab />);
+    const error = await screen.findByTestId("today-error");
+    expect(error.textContent).toContain("nestquest-admins");
+  });
+});

admin/src/today/TodayTab.tsx

@@ -0,0 +1,277 @@
+/**
+ * Today tab — compact density (design/ADMIN-SPEC.md §2.1–2.3, §2.5–2.6).
+ */
+import { useEffect, useState } from "react";
+import {
+  fetchSnapshot,
+  type AdminSnapshot,
+  type SnapshotChild,
+  type SnapshotInstance,
+} from "../api/snapshot";
+import { ApiForbiddenError } from "../api/client";
+import {
+  formatClockTime,
+  formatDueTime,
+  formatLongDate,
+  formatShortDate,
+} from "./format";
+import {
+  AlertCircleGlyph,
+  CheckCircleGlyph,
+  InfoGlyph,
+  SettingsGlyph,
+} from "./glyphs";
+import "./TodayTab.css";
+
+const CYCLE_LENGTH_DAYS = 14;
+
+/** ADMIN-SPEC §1: every scroll column ends with 92px so content clears the tab bar. */
+export const SCROLL_BOTTOM_PADDING = "92px";
+
+export const PERMISSION_NOTE =
+  "Undo is admin-only. A panel tap can never reverse a completion.";
+
+type LoadState =
+  | { kind: "loading" }
+  | { kind: "error"; message: string }
+  | { kind: "ready"; snapshot: AdminSnapshot };
+
+function isOverdueOpen(instance: SnapshotInstance): boolean {
+  return instance.overdue && instance.state === "open";
+}
+
+function ScreenHeader({ sub }: { sub: string }) {
+  return (
+    <header className="today-header">
+      <div>
+        <h2 className="today-title">Today</h2>
+        <p className="today-sub">{sub}</p>
+      </div>
+      {/* Settings screen is a later task; the control is not wired yet. */}
+      <button type="button" className="today-icon-button" aria-label="Settings">
+        <SettingsGlyph />
+      </button>
+    </header>
+  );
+}
+
+function StatRow({ snapshot }: { snapshot: AdminSnapshot }) {
+  const done = snapshot.children.reduce((sum, c) => sum + c.completed_today, 0);
+  const remaining = snapshot.children.reduce((sum, c) => sum + c.remaining_today, 0);
+  const overdue = snapshot.children.reduce(
+    (sum, c) => sum + c.instances.filter(isOverdueOpen).length,
+    0,
+  );
+  const stats = [
+    { key: "done", label: "Done", value: done },
+    { key: "remaining", label: "Remaining", value: remaining },
+    { key: "overdue", label: "Overdue", value: overdue },
+  ];
+  return (
+    <div className="today-stats">
+      {stats.map((stat) => (
+        <div key={stat.key} className="today-stat" data-testid={`stat-${stat.key}`}>
+          <div className={`today-stat-value today-stat-value--${stat.key}`}>
+            {stat.value}
+          </div>
+          <div className="today-stat-label">{stat.label}</div>
+        </div>
+      ))}
+    </div>
+  );
+}
+
+function ChildRow({ child }: { child: SnapshotChild }) {
+  const overdue = child.instances.filter(isOverdueOpen).length;
+  const allDone = child.due_today > 0 && child.completed_today === child.due_today;
+  let meta: string;
+  let metaClass = "today-child-meta";
+  if (!child.present) {
+    meta = child.next_present
+      ? `Away · returns ${formatShortDate(child.next_present)}`
+      : "Away";
+  } else if (allDone) {
+    meta = `${child.completed_today} of ${child.due_today} · all done`;
+    metaClass += " today-child-meta--done";
+  } else {
+    meta = `${child.completed_today} of ${child.due_today} · ${overdue} overdue`;
+  }
+  const pct = Math.max(0, Math.min(100, child.completion_pct));
+  // ADMIN-SPEC §2.3 also asks for a lowercase `override` pill when an absence
+  // comes from a presence override. The snapshot carries no field saying
+  // where an absence came from, so the pill is omitted rather than guessed.
+  return (
+    <li
+      className={child.present ? "today-child" : "today-child today-child--away"}
+      data-testid={`child-${child.child_id}`}
+    >
+      <span className="today-avatar" data-testid="child-avatar" aria-hidden="true">
+        {child.child_name.charAt(0).toUpperCase()}
+      </span>
+      <div className="today-child-text">
+        <div className="today-child-name">{child.child_name}</div>
+        <div className={metaClass}>{meta}</div>
+      </div>
+      <div
+        className="today-progress"
+        role="progressbar"
+        aria-label={`${child.child_name} progress`}
+        aria-valuemin={0}
+        aria-valuemax={100}
+        aria-valuenow={pct}
+      >
+        <div className="today-progress-fill" style={{ width: `${pct}%` }} />
+      </div>
+    </li>
+  );
+}
+
+interface AttentionItem {
+  instance: SnapshotInstance;
+  childName: string;
+}
+
+function attentionItems(snapshot: AdminSnapshot): AttentionItem[] {
+  const all = snapshot.children.flatMap((child) =>
+    child.instances.map((instance) => ({ instance, childName: child.child_name })),
+  );
+  const overdue = all.filter((item) => isOverdueOpen(item.instance));
+  const completed = all
+    .filter((item) => item.instance.state === "completed" && item.instance.completed_at)
+    .sort((a, b) =>
+      (b.instance.completed_at ?? "").localeCompare(a.instance.completed_at ?? ""),
+    );
+  return [...overdue, ...completed];
+}
+
+function AttentionRow({ item }: { item: AttentionItem }) {
+  const { instance, childName } = item;
+  const overdue = isOverdueOpen(instance);
+  // TODO(e57facc2): wire "Mark done" / "Undo" mutations and live updates.
+  // The admin plane has no complete route yet, so both actions are inert here.
+  return (
+    <li className="today-event" data-testid={`attention-${instance.id}`}>
+      <span
+        className={overdue ? "today-event-glyph today-event-glyph--overdue" : "today-event-glyph"}
+      >
+        {overdue ? <AlertCircleGlyph /> : <CheckCircleGlyph />}
+      </span>
+      <div className="today-event-text">
+        <div className="today-event-title">
+          {instance.title} · {childName}
+        </div>
+        {overdue ? (
+          <div className="today-event-meta today-event-meta--overdue">
+            {instance.due_time
+              ? `Overdue since ${formatDueTime(instance.due_time)}`
+              : "Overdue"}
+          </div>
+        ) : (
+          // The snapshot carries no completion actor, so "from panel" is not printed.
+          <div className="today-event-meta">
+            Completed {formatClockTime(instance.completed_at as string)}
+          </div>
+        )}
+      </div>
+      <button
+        type="button"
+        className={overdue ? "today-action today-action--done" : "today-action today-action--undo"}
+      >
+        {overdue ? "Mark done" : "Undo"}
+      </button>
+    </li>
+  );
+}
+
+function PermissionNote() {
+  return (
+    <div className="today-note" data-testid="permission-note">
+      <span className="today-note-glyph">
+        <InfoGlyph />
+      </span>
+      <span>{PERMISSION_NOTE}</span>
+    </div>
+  );
+}
+
+export default function TodayTab() {
+  const [state, setState] = useState<LoadState>({ kind: "loading" });
+  const [attempt, setAttempt] = useState(0);
+
+  useEffect(() => {
+    let cancelled = false;
+    setState({ kind: "loading" });
+    fetchSnapshot()
+      .then((snapshot) => {
+        if (!cancelled) setState({ kind: "ready", snapshot });
+      })
+      .catch((error: unknown) => {
+        if (cancelled) return;
+        const message =
+          error instanceof ApiForbiddenError
+            ? error.message
+            : "Today's snapshot could not be loaded. Check your connection and try again.";
+        setState({ kind: "error", message });
+      });
+    return () => {
+      cancelled = true;
+    };
+  }, [attempt]);
+
+  let sub = "";
+  let body;
+  if (state.kind === "loading") {
+    body = (
+      <div className="today-status" role="status" data-testid="today-loading">
+        Loading today…
+      </div>
+    );
+  } else if (state.kind === "error") {
+    body = (
+      <div className="today-status today-status--error" role="alert" data-testid="today-error">
+        <p>{state.message}</p>
+        <button type="button" className="today-retry" onClick={() => setAttempt((n) => n + 1)}>
+          Try again
+        </button>
+      </div>
+    );
+  } else {
+    const { snapshot } = state;
+    sub = `${formatLongDate(snapshot.today_iso)} · cycle day ${snapshot.cycle_day} of ${CYCLE_LENGTH_DAYS}`;
+    const attention = attentionItems(snapshot);
+    body = (
+      <>
+        <StatRow snapshot={snapshot} />
+        <ul className="today-card today-list" aria-label="Children">
+          {snapshot.children.map((child) => (
+            <ChildRow key={child.child_id} child={child} />
+          ))}
+        </ul>
+        <h3 className="today-section-label">Needs attention</h3>
+        {attention.length > 0 ? (
+          <ul className="today-card today-list" aria-label="Needs attention">
+            {attention.map((item) => (
+              <AttentionRow key={item.instance.id} item={item} />
+            ))}
+          </ul>
+        ) : (
+          <div className="today-card today-empty">Nothing needs attention.</div>
+        )}
+        <PermissionNote />
+      </>
+    );
+  }
+
+  return (
+    <div className="today-screen">
+      <ScreenHeader sub={sub} />
+      <div
+        className="today-scroll"
+        data-testid="today-scroll"
+        style={{ paddingBottom: SCROLL_BOTTOM_PADDING }}
+      >
+        {body}
+      </div>
+    </div>
+  );
+}

admin/src/today/format.ts

@@ -0,0 +1,50 @@
+/**
+ * Date/time formatting for the Today tab.
+ *
+ * Calendar dates ("YYYY-MM-DD") are parsed by their components and formatted
+ * in UTC, so the printed day never shifts with the viewer's offset — unlike
+ * `new Date("YYYY-MM-DD")`, which is UTC midnight and reads as the previous
+ * day in negative-offset zones.
+ */
+
+const LOCALE = "en-US";
+
+function calendarDate(iso: string): Date {
+  const match = /^(\d{4})-(\d{2})-(\d{2})$/.exec(iso);
+  if (!match) throw new Error(`Invalid calendar date: ${iso}`);
+  const [, year, month, day] = match;
+  return new Date(Date.UTC(Number(year), Number(month) - 1, Number(day)));
+}
+
+function format(date: Date, options: Intl.DateTimeFormatOptions): string {
+  // Newer ICU puts a narrow no-break space before AM/PM; normalise it.
+  return new Intl.DateTimeFormat(LOCALE, options)
+    .format(date)
+    .replace(/ /g, " ");
+}
+
+/** "Wednesday, September 23" */
+export function formatLongDate(iso: string): string {
+  const date = calendarDate(iso);
+  const weekday = format(date, { weekday: "long", timeZone: "UTC" });
+  const monthDay = format(date, { month: "long", day: "numeric", timeZone: "UTC" });
+  return `${weekday}, ${monthDay}`;
+}
+
+/** "Sep 23" */
+export function formatShortDate(iso: string): string {
+  return format(calendarDate(iso), { month: "short", day: "numeric", timeZone: "UTC" });
+}
+
+/** "09:00" -> "9:00 AM" (a wall-clock time, no zone conversion). */
+export function formatDueTime(hhmm: string): string {
+  const match = /^(\d{2}):(\d{2})/.exec(hhmm);
+  if (!match) return hhmm;
+  const date = new Date(Date.UTC(2000, 0, 1, Number(match[1]), Number(match[2])));
+  return format(date, { hour: "numeric", minute: "2-digit", timeZone: "UTC" });
+}
+
+/** A UTC ISO timestamp shown as the viewer's local time, "7:04 AM". */
+export function formatClockTime(isoTimestamp: string): string {
+  return format(new Date(isoTimestamp), { hour: "numeric", minute: "2-digit" });
+}

admin/src/today/glyphs.tsx

@@ -0,0 +1,61 @@
+/**
+ * Inline stroke glyphs for the Today tab (Lucide-style 24px grid). The
+ * shipped Lucide subset is task b50b048f; these keep this screen CDN-free
+ * until then.
+ */
+import type { ReactNode } from "react";
+
+function Glyph({ size, children }: { size: number; children: ReactNode }) {
+  return (
+    <svg
+      width={size}
+      height={size}
+      viewBox="0 0 24 24"
+      fill="none"
+      stroke="currentColor"
+      strokeWidth={2}
+      strokeLinecap="round"
+      strokeLinejoin="round"
+      aria-hidden="true"
+      focusable="false"
+    >
+      {children}
+    </svg>
+  );
+}
+
+export function SettingsGlyph({ size = 18 }: { size?: number }) {
+  return (
+    <Glyph size={size}>
+      <circle cx="12" cy="12" r="3" />
+      <path d="M12 2v3M12 19v3M2 12h3M19 12h3M4.9 4.9l2.1 2.1M17 17l2.1 2.1M4.9 19.1 7 17M17 7l2.1-2.1" />
+    </Glyph>
+  );
+}
+
+export function InfoGlyph({ size = 16 }: { size?: number }) {
+  return (
+    <Glyph size={size}>
+      <circle cx="12" cy="12" r="10" />
+      <path d="M12 16v-4M12 8h.01" />
+    </Glyph>
+  );
+}
+
+export function AlertCircleGlyph({ size = 18 }: { size?: number }) {
+  return (
+    <Glyph size={size}>
+      <circle cx="12" cy="12" r="10" />
+      <path d="M12 8v4M12 16h.01" />
+    </Glyph>
+  );
+}
+
+export function CheckCircleGlyph({ size = 18 }: { size?: number }) {
+  return (
+    <Glyph size={size}>
+      <circle cx="12" cy="12" r="10" />
+      <path d="m9 12 2 2 4-4" />
+    </Glyph>
+  );
+}

admin/tsconfig.json

@@ -0,0 +1,16 @@
+{
+  "compilerOptions": {
+    "target": "ES2022",
+    "module": "ESNext",
+    "moduleResolution": "bundler",
+    "lib": ["ES2022", "DOM", "DOM.Iterable"],
+    "jsx": "react-jsx",
+    "types": ["vite/client"],
+    "strict": true,
+    "skipLibCheck": true,
+    "noEmit": true,
+    "isolatedModules": true,
+    "useDefineForClassFields": true
+  },
+  "include": ["src"]
+}

admin/vite-sw-plugin.ts

@@ -0,0 +1,93 @@
+/* Build-time service worker injection. After Vite writes the bundle, the
+   hashed asset URLs referenced by dist/index.html and a content-derived
+   revision are written into dist/sw.js, so the offline shell is complete right
+   after install and every release ships a new worker with fresh caches.
+   Build tooling only — never imported by the app bundle. */
+import { createHash } from "node:crypto";
+import { readFileSync, writeFileSync } from "node:fs";
+import { resolve } from "node:path";
+import type { Plugin } from "vite";
+
+export const REVISION_MARKER = "__NQ_BUILD_REVISION__";
+const PRECACHE_PLACEHOLDER = "const PRECACHE_ASSETS = [];";
+// Unhashed files sw.js precaches by fixed URL, relative to the build output.
+export const STATIC_PRECACHE_FILES = [
+  "manifest.webmanifest",
+  "icons/icon-192.png",
+  "icons/icon-512.png",
+  "icons/icon-maskable-512.png",
+];
+
+export interface PrecacheFile {
+  path: string;
+  bytes: string | Uint8Array;
+}
+
+// Every same-origin URL an index.html loads via <script src> or <link href>,
+// normalised to an absolute path, in document order and without duplicates.
+export function extractShellAssets(indexHtml: string): string[] {
+  const tags = indexHtml.match(/<(?:script|link)\b[^>]*>/gi) ?? [];
+  const urls = tags.flatMap((tag) => {
+    const attr = /\b(?:src|href)\s*=\s*["']([^"']+)["']/i.exec(tag);
+    if (!attr) return [];
+    const url = new URL(attr[1], "https://same-origin.invalid/");
+    return url.origin === "https://same-origin.invalid" ? [url.pathname] : [];
+  });
+  return [...new Set(urls)];
+}
+
+// Hash of every precached file, sorted by path; each entry is length-prefixed
+// so no two different file sets hash the same concatenation.
+export function computeRevision(files: PrecacheFile[]): string {
+  const hash = createHash("sha256");
+  for (const { path, bytes } of [...files].sort((a, b) => (a.path < b.path ? -1 : a.path > b.path ? 1 : 0))) {
+    const data = typeof bytes === "string" ? Buffer.from(bytes, "utf8") : bytes;
+    hash.update(`${path}\0${data.byteLength}\0`).update(data);
+  }
+  return hash.digest("hex").slice(0, 12);
+}
+
+// Returns swSource with the precache list and the build revision filled in.
+// The revision covers index.html (and so the hashed bundles it names), the
+// sw.js source and the bytes of every unhashed static file it precaches.
+export function injectServiceWorker(
+  indexHtml: string,
+  swSource: string,
+  staticFiles: PrecacheFile[],
+): string {
+  if (!swSource.includes(PRECACHE_PLACEHOLDER) || !swSource.includes(REVISION_MARKER)) {
+    throw new Error("sw.js is missing the PRECACHE_ASSETS placeholder or revision marker");
+  }
+  const assets = extractShellAssets(indexHtml);
+  const revision = computeRevision([
+    { path: "index.html", bytes: indexHtml },
+    { path: "sw.js", bytes: swSource },
+    ...staticFiles,
+  ]);
+  return swSource
+    .replace(PRECACHE_PLACEHOLDER, `const PRECACHE_ASSETS = ${JSON.stringify(assets)};`)
+    .replaceAll(REVISION_MARKER, revision);
+}
+
+export function serviceWorkerInjectPlugin(): Plugin {
+  let outDir = "";
+  return {
+    name: "nestquest-sw-inject",
+    apply: "build",
+    configResolved(config) {
+      outDir = resolve(config.root, config.build.outDir);
+    },
+    writeBundle() {
+      const swPath = resolve(outDir, "sw.js");
+      const indexHtml = readFileSync(resolve(outDir, "index.html"), "utf8");
+      const staticFiles = STATIC_PRECACHE_FILES.map((path) => ({
+        path,
+        bytes: readFileSync(resolve(outDir, path)),
+      }));
+      writeFileSync(
+        swPath,
+        injectServiceWorker(indexHtml, readFileSync(swPath, "utf8"), staticFiles),
+      );
+    },
+  };
+}

admin/vite.config.ts

@@ -0,0 +1,10 @@
+import { defineConfig } from "vitest/config";
+import react from "@vitejs/plugin-react";
+import { serviceWorkerInjectPlugin } from "./vite-sw-plugin";
+
+export default defineConfig({
+  plugins: [react(), serviceWorkerInjectPlugin()],
+  test: {
+    environment: "jsdom",
+  },
+});

api/__init__.py

@@ -0,0 +1,19 @@
+"""NestQuest API service.
+
+A standalone FastAPI deployable that owns the NestQuest database and
+exposes it over HTTP to the Home Assistant integration (panel plane) and
+the admin PWA (admin plane).  See Feature 16 (task cd03735b) in the
+project tracker for the full contract.
+
+This package imports the NestQuest domain ``core`` WITHOUT executing
+``custom_components/nestquest/__init__.py`` — that parent package's
+``__init__.py`` imports ``homeassistant``, which is absent from the
+API's runtime.  The coupling is encapsulated in
+:mod:`api.nestquest_core`, which loads ``core`` by file location with
+:mod:`importlib.util` and registers it under the distinct top-level name
+``nestquest_core`` (no ``sys.path`` mutation, no generic top-level
+names published).  It is a TRANSITIONAL coupling that Feature 18 will
+revisit: once the integration becomes a thin API client and ``core``
+moves out of the integration bundle, this helper goes away.
+"""
+from __future__ import annotations

api/app.py

@@ -0,0 +1,139 @@
+"""The NestQuest FastAPI application.
+
+This module builds the ASGI app for the NestQuest API service (Feature
+16).  The skeleton here wires the bundled ``core`` (Feature 15) and
+exposes the two endpoints every later task depends on:
+
+- ``GET /health`` — returns ``200`` with a JSON status body once the
+  app has imported core, opened the database, and applied migrations;
+  a cheap ``SELECT 1`` confirms the connection is live without leaking
+  the filesystem path on an unauthenticated route.
+- ``GET /api/v1/panel/snapshot`` — the panel plane's today snapshot
+  (service-token protected; see :mod:`api.routes_panel`, whose router
+  carries the shared :func:`api.dependencies.require_panel_token`
+  check).
+- ``GET /api/v1/admin/ping`` — the admin plane's auth probe, protected
+  by the Authentik OIDC JWT check (see :mod:`api.routes_admin`, whose
+  router carries the shared :func:`api.auth.require_admin_jwt`
+  dependency; the JWKS document it verifies against is cached on
+  ``app.state.jwks_cache``).
+- ``GET /docs`` — FastAPI's auto-served OpenAPI document (Swagger UI);
+  ``/openapi.json`` is the raw schema.  No extra wiring is needed;
+  FastAPI serves both by default.
+
+The database is opened and migrated in a FastAPI lifespan context so a
+startup failure (e.g. an unwritable path) surfaces as a startup error
+rather than the first request.  The connection is closed on shutdown.
+
+This module exports ONLY the :func:`create_app` factory — there is no
+module-level app instance, because building one at import time would
+read ``NESTQUEST_DB_PATH`` at import (and fail-fast on a missing value)
+before any worker is ready to report it.  Serve with::
+
+    uvicorn --factory api.app:create_app
+
+so the factory runs on each worker startup and reads the environment
+then.
+"""
+from __future__ import annotations
+
+from contextlib import asynccontextmanager
+from collections.abc import AsyncIterator
+
+from fastapi import FastAPI
+
+from api.auth import JwksCache
+from api.config import ApiConfig
+from api.database import DatabaseState, make_database
+from api.events import TransitionPublisher
+from api.routes_admin import router as admin_router
+from api.routes_panel import router as panel_router
+from api.scheduler import MissedSweepScheduler
+
+
+def _build_lifespan(db_path: str):
+    """Return a lifespan that opens+migrates then closes one database.
+
+    Captured as a closure so the app factory can hand the configured
+    path in without threading it through FastAPI's lifespan signature.
+    The lifespan also installs the app's ONE in-process transition
+    publisher on ``app.state.publisher`` (see :mod:`api.events`) so
+    every route and SSE subscriber shares that single instance, and
+    starts the daily missed-sweep scheduler
+    (:class:`api.scheduler.MissedSweepScheduler`) against the same
+    database and publisher — cancelled before the connection closes on
+    shutdown.
+    """
+
+    @asynccontextmanager
+    async def lifespan(app: FastAPI) -> AsyncIterator[None]:
+        state = make_database(db_path)
+        app.state.db = state
+        app.state.publisher = TransitionPublisher()
+        scheduler = MissedSweepScheduler(
+            state.database, publisher=app.state.publisher
+        )
+        app.state.sweep_scheduler = scheduler
+        try:
+            await state.open_and_migrate()
+            scheduler.start()
+            yield
+        finally:
+            await scheduler.stop()
+            await state.close()
+
+    return lifespan
+
+
+def create_app(config: ApiConfig | None = None) -> FastAPI:
+    """Build the NestQuest API FastAPI app.
+
+    ``config`` defaults to one built from the process environment, so
+    ``uvicorn --factory api.app:create_app`` picks up
+    ``NESTQUEST_DB_PATH`` (and fails fast on startup if it is missing).
+    Tests pass an explicit config so each test gets a hermetic temp
+    SQLite file.
+    """
+    cfg = config if config is not None else ApiConfig.from_env()
+
+    app = FastAPI(
+        title="NestQuest API",
+        description=(
+            "Standalone HTTP service that owns the NestQuest database and "
+            "exposes it to the Home Assistant integration (panel plane) and "
+            "the admin PWA (admin plane)."
+        ),
+        version="0.1.0",
+        lifespan=_build_lifespan(cfg.db_path),
+    )
+
+    # The resolved config rides on app.state so the reusable route
+    # dependencies (the panel service-token check, the admin JWT check)
+    # read the configured values from the app rather than module state.
+    app.state.config = cfg
+    # The admin plane's ONE per-app JWKS cache: fetched from the
+    # configured provider on first use, then reused until its TTL
+    # lapses (see api.auth.JwksCache).  Tests replace it with a
+    # stub-backed cache so no request ever leaves the process.
+    app.state.jwks_cache = JwksCache(cfg.oidc_jwks_url)
+    app.include_router(panel_router)
+    app.include_router(admin_router)
+
+    @app.get("/health", summary="Service health")
+    async def health() -> dict[str, str]:
+        """Return service health.
+
+        Returns ``200`` with ``{"status": "ok"}`` once the lifespan has
+        opened and migrated the database.  A cheap ``SELECT 1`` against
+        the live connection confirms the database is reachable WITHOUT
+        leaking the filesystem path on an unauthenticated route; if the
+        connection is dead the query raises and the probe fails.
+        """
+        state: DatabaseState = app.state.db
+        await state.database.fetch_one("SELECT 1")
+        return {"status": "ok"}
+
+    return app
+
+
+__all__ = ["create_app"]

api/auth.py

@@ -0,0 +1,490 @@
+"""Admin-plane authentication for the NestQuest API service.
+
+The admin plane (``/api/v1/admin/*``, D-012) is authenticated by
+Authentik-issued OIDC access tokens: the admin PWA presents its JWT as
+a Bearer credential and :func:`require_admin_jwt` — the ONE
+implementation of that check — verifies it before any admin route runs.
+Verification enforces, without exception:
+
+- the signature, against the RSA signing key published in the
+  provider's JWKS document (fetched from the configured
+  ``NESTQUEST_OIDC_JWKS_URL`` and cached per app — never per request);
+- the issuer (``iss`` must equal the configured
+  ``NESTQUEST_OIDC_ISSUER``);
+- the audience (``aud`` must carry the configured
+  ``NESTQUEST_OIDC_AUDIENCE``);
+- expiry (``exp`` is required and enforced, and ``nbf`` is enforced
+  when the token carries it).
+
+Every rejection raises the SAME :class:`~fastapi.HTTPException` with
+the same detail — nothing in the response distinguishes which check
+failed.  The check FAILS CLOSED: a missing app config, a malformed or
+missing ``Authorization`` header, a non-RS256 algorithm, an unknown
+``kid``, and any PyJWT verification error all yield the one 401.
+
+The token's header (``alg``, ``kid``) is parsed and checked BEFORE the
+JWKS cache is consulted, so structurally invalid tokens can never
+amplify load on the provider.  An unknown ``kid`` forces ONE
+TTL-bypassing refetch (throttled, see :class:`JwksCache`) so a rotated
+key is picked up without waiting out the TTL, and a JWKS entry that
+matches the ``kid`` but carries corrupt key material maps to the same
+401.  A JWKS FETCH failure is deliberately NOT mapped to 401: the
+provider being unreachable is a server-side fault (an HTTP 500
+surfaces) and never poisons the cache, so the plane stays closed while
+the real cause is visible in the server log instead of disguised as a
+bad credential; a short backoff window after a failed fetch fails fast
+(re-raising the recorded fault) rather than fetching once per request.
+
+Beyond authentication, :func:`require_admin` is the ONE dependency
+every admin route uses: it REJECTS the panel service token outright —
+that credential authenticates the panel plane only, so treating it as
+a JWT candidate would blur two credential types into one check — and
+then requires the verified JWT's ``groups`` claim to name the
+``nestquest-admins`` group (authorization, 403, distinct from the
+uniform authentication 401 so the two failure classes stay apart).
+"""
+from __future__ import annotations
+
+import asyncio
+import binascii
+import json
+import secrets
+import time
+from collections.abc import Awaitable, Callable
+from typing import Annotated
+
+import httpx
+import jwt
+from fastapi import Header, HTTPException, Request
+
+#: The authorization scheme the admin plane expects.  Matched
+#: case-insensitively, as RFC 9110 requires for scheme names.
+_BEARER_SCHEME = "bearer"
+
+#: The ONLY JWT signing algorithm accepted.  Pinned to one asymmetric
+#: algorithm (Authentik's RS256 default) so neither the header's ``alg``
+#: nor any JWKS key can talk the verifier into a weaker or symmetric
+#: scheme; PyJWT re-enforces it at decode time.
+_ALLOWED_ALGORITHM = "RS256"
+
+#: The 401 detail shared by every rejection — deliberately uniform so
+#: the response never reveals which part of the check failed.
+_REJECTION_DETAIL = "Missing or invalid admin credentials"
+
+#: Challenge header returned with a 401, per the Bearer auth scheme.
+_WWW_AUTHENTICATE = {"WWW-Authenticate": "Bearer"}
+
+#: The authorization group a verified admin JWT must name in its
+#: ``groups`` claim.  A module constant (the value Authentik's
+#: nestquest-admins group maps to) so it is clearly named in one place.
+ADMIN_GROUP = "nestquest-admins"
+
+#: Seconds a fetched JWKS document stays trusted before the next
+#: fetch.  Five minutes bounds how long a rotated-away key keeps
+#: verifying while staying far above a per-request fetch.
+_JWKS_TTL_SECONDS = 300.0
+
+#: Seconds a FAILED JWKS fetch blocks further fetch attempts.  Within
+#: this window after a failure the cache fails fast — it re-raises the
+#: recorded fault instead of touching the provider — so an outage is
+#: never amplified into one fetch per request.
+_JWKS_BACKOFF_SECONDS = 5.0
+
+#: Seconds that must pass before ANOTHER forced (TTL-bypassing) refetch
+#: may run.  An unmatched ``kid`` forces one refetch to pick up rotated
+#: keys; this interval bounds it, so a flood of unknown-``kid`` tokens
+#: cannot turn each request into a provider fetch either.
+_JWKS_KID_REFETCH_SECONDS = 5.0
+
+#: Seconds before the real JWKS fetch gives up on the provider.
+_JWKS_TIMEOUT_SECONDS = 5.0
+
+#: An async callable that fetches the JWKS document from a URL.  The
+#: real one (:func:`_fetch_jwks`) uses httpx; tests inject a stub so
+#: the suite stays hermetic (no network access).
+JwksFetcher = Callable[[str], Awaitable[dict[str, object]]]
+
+
+async def _fetch_jwks(url: str) -> dict[str, object]:
+    """Fetch the provider's JWKS document over HTTP (the real fetch).
+
+    Uses httpx with a short timeout; a non-2xx response or a body that
+    is not a ``{"keys": [...]}`` object raises — the cache never stores
+    a failed or malformed fetch.
+    """
+    async with httpx.AsyncClient(timeout=_JWKS_TIMEOUT_SECONDS) as client:
+        response = await client.get(url)
+        response.raise_for_status()
+        document = response.json()
+    if not isinstance(document, dict) or not isinstance(
+        document.get("keys"), list
+    ):
+        raise ValueError("JWKS document must be an object with a keys list")
+    return document
+
+
+class JwksCache:
+    """One app's cache of the OIDC provider's JWKS document.
+
+    The document is fetched through ``fetcher`` (the real one uses
+    httpx against the configured JWKS URL) and held for ``ttl_seconds``
+    — the dependency NEVER fetches per request.  A single fetch is
+    shared between concurrent requests via an :class:`asyncio.Lock`
+    (double-checked around it), and a failed fetch is never cached, so
+    the next request retries once the backoff window lapses rather than
+    being locked out until the TTL does.
+
+    Two bounds keep the provider out of an amplification loop:
+
+    - ``backoff_seconds``: after a FAILED fetch, :meth:`get` fails fast
+      for this long — re-raising the recorded fault WITHOUT touching
+      the fetcher or even the lock — instead of retrying per request.
+    - ``kid_refetch_seconds``: forced (TTL-bypassing) refetches — the
+      unmatched-``kid`` path — may run at most this often; a forced
+      refetch that is bounded out (or one inside the backoff window)
+      is served from the cached document as-is.
+
+    A successful fetch always clears the backoff; the document itself
+    is still trusted only for ``ttl_seconds`` — nothing is cached
+    indefinitely.
+
+    One instance lives on ``app.state.jwks_cache`` (installed by
+    :func:`api.app.create_app`); tests replace it with one built around
+    a stub fetcher, keeping the suite hermetic.
+    """
+
+    def __init__(
+        self,
+        url: str,
+        *,
+        ttl_seconds: float = _JWKS_TTL_SECONDS,
+        backoff_seconds: float = _JWKS_BACKOFF_SECONDS,
+        kid_refetch_seconds: float = _JWKS_KID_REFETCH_SECONDS,
+        fetcher: JwksFetcher | None = None,
+    ) -> None:
+        self._url = url
+        self._ttl_seconds = ttl_seconds
+        self._backoff_seconds = backoff_seconds
+        self._kid_refetch_seconds = kid_refetch_seconds
+        self._fetcher: JwksFetcher = (
+            fetcher if fetcher is not None else _fetch_jwks
+        )
+        self._document: dict[str, object] | None = None
+        self._fetched_at: float | None = None
+        self._failed_until: float | None = None
+        self._last_error: BaseException | None = None
+        self._forced_at: float | None = None
+        self._lock = asyncio.Lock()
+
+    async def get(self, *, force: bool = False) -> dict[str, object]:
+        """Return the JWKS document, refetching it if the TTL lapsed.
+
+        With ``force=True`` the TTL is bypassed so an unmatched ``kid``
+        can pick up a rotated key without waiting it out; the forced
+        refetch is itself bounded (see the class docstring): inside the
+        backoff window or the ``kid_refetch_seconds`` interval the
+        cached document is served as-is instead.  A failed fetch is
+        re-raised to the caller (a provider outage is a server fault,
+        never a 401) and starts the backoff window, during which every
+        caller — including forced ones with nothing cached — fails fast
+        on the recorded fault.
+        """
+        if not force:
+            fresh = self._fresh_document()
+            if fresh is not None:
+                return fresh
+        error = self._backoff_error()
+        if error is not None:
+            # Fail fast OUTSIDE the lock: a request inside the backoff
+            # window must not queue behind an in-flight fetch.
+            if force:
+                document = self._document
+                if document is not None:
+                    return document
+            raise error
+        async with self._lock:
+            if not force:
+                fresh = self._fresh_document()
+                if fresh is not None:
+                    return fresh
+            error = self._backoff_error()
+            if error is not None:
+                if force:
+                    document = self._document
+                    if document is not None:
+                        return document
+                raise error
+            if force and self._refetch_throttled():
+                document = self._document
+                if document is not None:
+                    return document
+            return await self._fetch_locked(force=force)
+
+    def _fresh_document(self) -> dict[str, object] | None:
+        """The cached document if one exists and is inside its TTL."""
+        document = self._document
+        fetched_at = self._fetched_at
+        if (
+            document is not None
+            and fetched_at is not None
+            and (time.monotonic() - fetched_at) < self._ttl_seconds
+        ):
+            return document
+        return None
+
+    def _backoff_error(self) -> BaseException | None:
+        """The recorded fetch fault while the backoff window is open."""
+        failed_until = self._failed_until
+        last_error = self._last_error
+        if (
+            failed_until is not None
+            and last_error is not None
+            and time.monotonic() < failed_until
+        ):
+            return last_error
+        return None
+
+    def _refetch_throttled(self) -> bool:
+        """Whether a forced refetch ran too recently to run another."""
+        forced_at = self._forced_at
+        return forced_at is not None and (
+            time.monotonic() - forced_at
+        ) < self._kid_refetch_seconds
+
+    async def _fetch_locked(self, *, force: bool) -> dict[str, object]:
+        """Run ONE fetch attempt (caller holds the lock) and record it.
+
+        A failed fetch starts the ``backoff_seconds`` window and is
+        re-raised; a successful one stores the document, restarts the
+        TTL and clears the backoff.  A forced attempt stamps
+        ``_forced_at`` so the ``kid_refetch_seconds`` interval bounds
+        how often forced refetches may run back-to-back.
+        """
+        if force:
+            self._forced_at = time.monotonic()
+        try:
+            document = await self._fetcher(self._url)
+        except Exception as error:
+            self._failed_until = time.monotonic() + self._backoff_seconds
+            self._last_error = error
+            raise
+        self._document = document
+        self._fetched_at = time.monotonic()
+        self._failed_until = None
+        self._last_error = None
+        return document
+
+
+#: 403 detail for the panel service token on an admin route.  Deliberately
+#: non-leaking: it names the credential TYPE, not its value or where it came
+#: from.  403 (not 401) because this is a REFUSED credential type, not an
+#: absent/invalid one — challenging re-authentication would suggest the same
+#: credential could work with a retry, which it never can here.
+_PANEL_TOKEN_REJECTION_DETAIL = "This credential type is not accepted for admin access"
+
+#: 403 detail for a valid JWT that is not a member of the admin group.
+#: Distinct from the uniform 401 on purpose: the token AUTHENTICATED, but
+#: the caller is not AUTHORIZED, so the response may say so.
+_FORBIDDEN_DETAIL = "Admin access requires membership in the nestquest-admins group"
+
+
+def _reject() -> HTTPException:
+    """Build the single 401 the dependency raises for every failure."""
+    return HTTPException(
+        status_code=401,
+        detail=_REJECTION_DETAIL,
+        headers=_WWW_AUTHENTICATE,
+    )
+
+
+def _matching_key(jwks: dict[str, object], kid: str) -> object | None:
+    """Return the RSA signing key named ``kid`` from the JWKS.
+
+    Only ``kty: RSA`` entries are considered (the pinned RS256 scheme
+    is asymmetric RSA); anything else — a missing ``keys`` list, no
+    entry with that ``kid`` — returns ``None`` rather than falling back
+    to "some" key.  The key is built through PyJWT's JWKS decoder, and
+    an entry that MATCHES the ``kid`` but carries corrupt key material
+    (a malformed ``n``/``e`` raises ``ValueError`` — ``binascii.Error``
+    is its subclass — or ``TypeError`` instead of a ``PyJWTError``) is
+    mapped to the one 401 like every other rejection: the caller must
+    never see a half-built key.
+    """
+    keys = jwks.get("keys")
+    if not isinstance(keys, list):
+        raise _reject()
+    for entry in keys:
+        if not isinstance(entry, dict):
+            continue
+        if entry.get("kid") != kid or entry.get("kty") != "RSA":
+            continue
+        try:
+            return jwt.algorithms.RSAAlgorithm.from_jwk(json.dumps(entry))
+        except (
+            jwt.PyJWTError,
+            binascii.Error,
+            ValueError,
+            TypeError,
+            KeyError,
+        ):
+            raise _reject() from None
+    return None
+
+
+async def verify_admin_token(
+    request: Request, token: str
+) -> dict[str, object]:
+    """Verify ONE admin bearer token and return its verified claims.
+
+    Reads the OIDC settings off ``app.state.config`` and the JWKS cache
+    off ``app.state.jwks_cache`` (both installed by
+    :func:`api.app.create_app`) so the check carries no module state.
+    A missing config or cache, an EMPTY configured issuer/audience/JWKS
+    URL, a non-RS256 ``alg`` header, an absent ``kid``, an unknown
+    ``kid``, and any PyJWT verification failure (bad signature,
+    expired, wrong issuer, wrong audience, not-yet-valid, missing
+    ``exp``) raise the SAME 401 — the failure mode is never leaked.
+    ``exp`` is REQUIRED (a token that never expires is never accepted)
+    and PyJWT enforces ``nbf`` when the token carries it.
+
+    The token's HEADER (``alg``, ``kid``) is parsed and enforced BEFORE
+    the JWKS cache is consulted, so a structurally invalid token costs
+    no fetch, no lock, no provider load.  When the cached document has
+    no entry for the ``kid``, ONE forced (TTL-bypassing, throttled)
+    refetch is made and the match retried once — a rotated key is
+    picked up without waiting out the TTL — before the 401.
+
+    A JWKS fetch failure propagates (see the module docstring): the
+    provider being down is a server fault, not a bad credential.
+    """
+    config = getattr(request.app.state, "config", None)
+    if (
+        config is None
+        or not config.oidc_issuer
+        or not config.oidc_audience
+        or not config.oidc_jwks_url
+    ):
+        raise _reject()
+    cache = getattr(request.app.state, "jwks_cache", None)
+    if cache is None:
+        raise _reject()
+    try:
+        header = jwt.get_unverified_header(token)
+    except jwt.PyJWTError:
+        raise _reject() from None
+    if header.get("alg") != _ALLOWED_ALGORITHM:
+        raise _reject()
+    kid = header.get("kid")
+    if not isinstance(kid, str) or not kid:
+        raise _reject()
+    jwks = await cache.get()
+    try:
+        key = _matching_key(jwks, kid)
+        if key is None:
+            # The kid is not in the cached document: force ONE
+            # TTL-bypassing refetch (bounded by the cache) and retry
+            # the match once before rejecting.
+            jwks = await cache.get(force=True)
+            key = _matching_key(jwks, kid)
+            if key is None:
+                raise _reject()
+        claims = jwt.decode(
+            token,
+            key=key,
+            algorithms=[_ALLOWED_ALGORITHM],
+            issuer=config.oidc_issuer,
+            audience=config.oidc_audience,
+            options={"require": ["exp"]},
+        )
+    except jwt.PyJWTError:
+        raise _reject() from None
+    return claims
+
+
+async def require_admin_jwt(
+    request: Request,
+    authorization: Annotated[str | None, Header()] = None,
+) -> dict[str, object]:
+    """Reject the request with 401 unless it carries a valid admin JWT.
+
+    Extracts the Bearer credential — a missing or malformed
+    ``Authorization`` header (wrong scheme, empty credential) raises
+    the one 401 — and delegates the verification to
+    :func:`verify_admin_token`, returning the verified claims for the
+    route to use (the probe route surfaces the token's ``sub``).
+
+    The nestquest-admins GROUP check lives in :func:`require_admin`,
+    which wraps this dependency; ``require_admin_jwt`` remains the plain
+    JWT-validation contract — the 401 path stays exactly this uniform.
+    """
+    if authorization is None:
+        raise _reject()
+    scheme, _, credential = authorization.partition(" ")
+    if scheme.lower() != _BEARER_SCHEME or not credential.strip():
+        raise _reject()
+    return await verify_admin_token(request, credential.strip())
+
+
+async def require_admin(
+    request: Request,
+    authorization: Annotated[str | None, Header()] = None,
+) -> dict[str, object]:
+    """The ONE admin-plane dependency: service-token refusal + group gate.
+
+    Order matters.  FIRST the Bearer credential is compared against the
+    configured panel service token (``app.state.config.panel_token``):
+    a match is refused OUTRIGHT with 403 — BEFORE any JWT parsing — so
+    the panel credential is never even treated as a JWT candidate, let
+    alone a non-admin JWT.  (403 rather than 401 because this is a
+    refused credential TYPE, not an invalid one: challenging
+    re-authentication would imply retrying could ever succeed; the
+    detail names the type only, never the value.)  A config with an
+    EMPTY panel token never matches anything, so it cannot lock every
+    Bearer request out.
+
+    Otherwise the credential goes through the existing JWT path
+    (:func:`require_admin_jwt` → :func:`verify_admin_token`): a missing
+    or malformed header and any invalid JWT still yield the SAME
+    uniform 401 as before.  A VALID JWT is then checked for
+    authorization: its ``groups`` claim must be a list containing
+    :data:`ADMIN_GROUP` — a missing, empty, or non-list ``groups`` or
+    one without the group raises 403 (distinct from the 401 on
+    purpose: the token authenticated, the caller did not authorize).
+
+    Returns the verified claims for the route.
+    """
+    if authorization is not None:
+        scheme, _, credential = authorization.partition(" ")
+        if scheme.lower() == _BEARER_SCHEME and credential.strip():
+            config = getattr(request.app.state, "config", None)
+            if (
+                config is not None
+                and config.panel_token
+                # compare_digest on bytes (as require_panel_token does)
+                # so the refusal does not short-circuit on the first
+                # mismatching byte — a constant-time comparison keeps a
+                # timing side channel on the credential off the table.
+                and secrets.compare_digest(
+                    credential.strip().encode("utf-8"),
+                    config.panel_token.encode("utf-8"),
+                )
+            ):
+                raise HTTPException(
+                    status_code=403,
+                    detail=_PANEL_TOKEN_REJECTION_DETAIL,
+                )
+    claims = await require_admin_jwt(request, authorization)
+    groups = claims.get("groups")
+    if not isinstance(groups, list) or ADMIN_GROUP not in groups:
+        raise HTTPException(status_code=403, detail=_FORBIDDEN_DETAIL)
+    return claims
+
+
+__all__ = [
+    "ADMIN_GROUP",
+    "JwksCache",
+    "JwksFetcher",
+    "require_admin",
+    "require_admin_jwt",
+    "verify_admin_token",
+]

api/config.py

@@ -0,0 +1,174 @@
+"""Configuration for the NestQuest API service.
+
+The API reads its configuration knobs from environment variables:
+
+- ``NESTQUEST_DB_PATH`` — the SQLite database file.  The API opens this
+  file on startup (creating it if absent) and applies migrations.
+- ``NESTQUEST_PANEL_TOKEN`` — the static panel-plane service token
+  (D-012): the credential ``/api/v1/panel/*`` routes require via
+  :func:`api.dependencies.require_panel_token`.  It is stored outside
+  the repo and handed to the service through the environment.
+- ``NESTQUEST_OIDC_ISSUER`` — the Authentik OIDC issuer URL whose
+  ``iss`` claim admin tokens must carry (D-012 admin plane).
+- ``NESTQUEST_OIDC_AUDIENCE`` — the OIDC client id the admin tokens
+  must carry as their ``aud`` claim (the API service's client id).
+- ``NESTQUEST_OIDC_JWKS_URL`` — the Authentik endpoint serving the
+  signing keys (the JWKS document) the admin tokens' signatures are
+  verified against.  Cached per app (see :class:`api.auth.JwksCache`).
+
+Unlike a dev convenience default, a missing or empty value is a
+configuration ERROR, not a silent fallback: a default database path
+would silently drop data at reboot, a default (or empty) service token
+would either authenticate everyone or lock the panel plane out for
+good, and a default (or empty) OIDC setting would silently leave the
+admin plane trusting an issuer that was never configured.  All five
+variables are therefore REQUIRED — ``ApiConfig.from_env`` RAISES when
+any of them is unset or empty.  This mirrors the integration's
+"explicit settings object" discipline (Feature 15's ``core.settings``):
+the API never reads HA config; callers pass the resolved values into
+the wiring.
+
+Serving: the app is built with the factory ``api.app:create_app`` — run
+it with ``uvicorn --factory api.app:create_app`` so the factory reads
+the environment on each worker startup rather than at import time.
+"""
+from __future__ import annotations
+
+import os
+from dataclasses import dataclass
+
+#: Environment variable holding the SQLite file path.  The API opens
+#: this file on startup (creating it if absent) and applies migrations.
+#: REQUIRED — unset or empty raises :class:`ConfigError` from
+#: :meth:`ApiConfig.from_env`.
+DB_PATH_ENV = "NESTQUEST_DB_PATH"
+
+#: Environment variable holding the static panel-plane service token
+#: (D-012), checked by :func:`api.dependencies.require_panel_token`.
+#: REQUIRED — unset or empty raises :class:`ConfigError` from
+#: :meth:`ApiConfig.from_env`; there is no silent default, because an
+#: empty configured token would either authenticate every caller or
+#: lock the panel plane out permanently.
+PANEL_TOKEN_ENV = "NESTQUEST_PANEL_TOKEN"
+
+#: Environment variable holding the Authentik OIDC issuer URL (D-012
+#: admin plane): every admin JWT's ``iss`` claim must equal it.  Checked
+#: by :func:`api.auth.require_admin_jwt`.  REQUIRED — unset or empty
+#: raises :class:`ConfigError` from :meth:`ApiConfig.from_env`; a default
+#: issuer would silently make the admin plane trust tokens from an
+#: issuer nobody configured.
+OIDC_ISSUER_ENV = "NESTQUEST_OIDC_ISSUER"
+
+#: Environment variable holding the OIDC audience (the API service's
+#: client id at Authentik): every admin JWT's ``aud`` claim must carry
+#: it.  Checked by :func:`api.auth.require_admin_jwt`.  REQUIRED — unset
+#: or empty raises :class:`ConfigError` from :meth:`ApiConfig.from_env`.
+OIDC_AUDIENCE_ENV = "NESTQUEST_OIDC_AUDIENCE"
+
+#: Environment variable holding the Authentik JWKS URL: the endpoint
+#: serving the signing keys admin JWT signatures are verified against.
+#: Fetched and cached by :class:`api.auth.JwksCache`.  REQUIRED — unset
+#: or empty raises :class:`ConfigError` from :meth:`ApiConfig.from_env`;
+#: without the provider's keys no token can be verified, so a silent
+#: default would only move the failure to request time.
+OIDC_JWKS_URL_ENV = "NESTQUEST_OIDC_JWKS_URL"
+
+
+class ConfigError(RuntimeError):
+    """Raised when required API configuration is missing or invalid."""
+
+
+@dataclass(frozen=True)
+class ApiConfig:
+    """Resolved API configuration.
+
+    Every field is required (no defaults): ``from_env`` rejects an
+    unset or empty value for each, and a caller building the dataclass
+    directly must pass explicit values — the token check and the JWT
+    checks themselves fail closed on empty configured values, but
+    expecting a caller to discover that at request time is a wiring
+    mistake, so every field is mandatory.  Kept as a dataclass so later
+    tasks (SSE, settings persistence) can extend it without touching
+    the call sites that read ``db_path``.
+    """
+
+    db_path: str
+    panel_token: str
+    #: The Authentik OIDC issuer URL admin tokens' ``iss`` must equal.
+    oidc_issuer: str
+    #: The OIDC audience (the API service's client id) admin tokens'
+    #: ``aud`` must carry.
+    oidc_audience: str
+    #: The Authentik JWKS URL the signing keys are fetched from.
+    oidc_jwks_url: str
+
+    @classmethod
+    def from_env(cls, env: dict[str, str] | None = None) -> "ApiConfig":
+        """Build configuration from the process environment.
+
+        ``env`` defaults to ``os.environ``; tests pass an explicit dict
+        so they are hermetic (no monkeypatch of the global environ).
+
+        Raises :class:`ConfigError` when ANY of the five variables is
+        unset or empty/whitespace-only — there is no silent default:
+
+        - ``NESTQUEST_DB_PATH``: a default in the temp directory would
+          silently lose data at reboot;
+        - ``NESTQUEST_PANEL_TOKEN``: a default token is never invented —
+          the panel plane is closed until a real one is configured;
+        - the three OIDC variables: an unconfigured issuer/audience/JWKS
+          URL must not silently leave the admin plane open (a default
+          JWKS URL or issuer would point at a provider nobody set up).
+        """
+        source = env if env is not None else os.environ
+
+        def require(env_var: str, reason: str) -> str:
+            """Return the stripped env value or raise ConfigError."""
+            value = source.get(env_var, "").strip()
+            if not value:
+                raise ConfigError(f"{env_var} {reason}")
+            return value
+
+        return cls(
+            db_path=require(
+                DB_PATH_ENV,
+                "must be set to a writable SQLite file path (it is unset "
+                "or empty — the API will not fall back to a temp directory "
+                "and silently lose data)",
+            ),
+            panel_token=require(
+                PANEL_TOKEN_ENV,
+                "must be set to the panel service token (it is unset or "
+                "empty — the API will not start without one, and no "
+                "default token is invented)",
+            ),
+            oidc_issuer=require(
+                OIDC_ISSUER_ENV,
+                "must be set to the Authentik OIDC issuer URL (it is "
+                "unset or empty — the admin plane will not trust tokens "
+                "from an issuer nobody configured)",
+            ),
+            oidc_audience=require(
+                OIDC_AUDIENCE_ENV,
+                "must be set to the OIDC audience the admin tokens carry "
+                "(it is unset or empty — the admin plane will not accept "
+                "tokens without a configured audience)",
+            ),
+            oidc_jwks_url=require(
+                OIDC_JWKS_URL_ENV,
+                "must be set to the Authentik JWKS URL (it is unset or "
+                "empty — admin token signatures cannot be verified "
+                "without the provider's signing keys)",
+            ),
+        )
+
+
+__all__ = [
+    "ApiConfig",
+    "ConfigError",
+    "DB_PATH_ENV",
+    "OIDC_AUDIENCE_ENV",
+    "OIDC_ISSUER_ENV",
+    "OIDC_JWKS_URL_ENV",
+    "PANEL_TOKEN_ENV",
+]

api/database.py

@@ -0,0 +1,82 @@
+"""Database wiring for the NestQuest API service.
+
+The API owns the database (it is the writer of record per Feature 16's
+contract).  This module owns one application-lifetime
+:class:`core.db.NestQuestDatabase`: it opens the SQLite file at the
+configured path on startup, applies migrations (creating the schema on
+a fresh file), and closes the connection on shutdown.
+
+The executor callable passed into ``NestQuestDatabase`` mirrors the
+contract of ``hass.async_add_executor_job``: schedule a synchronous
+callable on a worker and await its result.  HA's own version lives on
+the event loop; the API is not HA, so it uses
+:func:`asyncio.to_thread` for the same effect — sqlite3 calls run on a
+worker thread and only plain data returns to the event loop.
+"""
+from __future__ import annotations
+
+import asyncio
+import logging
+from typing import Any
+
+from api.nestquest_core import core_db, core_migrations
+
+LOGGER = logging.getLogger(__name__)
+
+#: The async SQLite wrapper.  Re-exported so route handlers and later
+#: tasks reach it through the API package, not the bundled core.
+NestQuestDatabase = core_db.NestQuestDatabase
+
+#: The migration runner.  Re-exported for the same reason.
+apply_migrations = core_migrations.apply_migrations
+
+
+async def _executor(fn: Any, *args: Any, **kwargs: Any) -> Any:
+    """Run a synchronous callable on a worker thread and await its result.
+
+    Mirrors the contract of ``hass.async_add_executor_job`` so the
+    bundled ``NestQuestDatabase`` (written against that contract) works
+    unchanged in the API process: sqlite3 calls never block the event
+    loop, and only plain Python data (row tuples,
+    :class:`core.db.ExecutionResult`) crosses back.
+    """
+    return await asyncio.to_thread(fn, *args, **kwargs)
+
+
+class DatabaseState:
+    """Holds the live database wrapper and its resolved path.
+
+    A small container so the lifespan and the route handlers share one
+    authoritative reference; FastAPI's lifespan stores one of these on
+    ``app.state.db`` and the health route reads it back.
+    """
+
+    __slots__ = ("database", "db_path")
+
+    def __init__(self, database: NestQuestDatabase, db_path: str) -> None:
+        self.database = database
+        self.db_path = db_path
+
+    async def open_and_migrate(self) -> None:
+        """Open the connection and apply migrations to the latest version."""
+        LOGGER.info("Opening NestQuest database at %s", self.db_path)
+        await self.database.open(self.db_path)
+        version = await apply_migrations(self.database)
+        LOGGER.info("NestQuest schema at version %d", version)
+
+    async def close(self) -> None:
+        """Close the connection; safe to call even if open failed."""
+        await self.database.close()
+
+
+def make_database(db_path: str) -> DatabaseState:
+    """Construct a :class:`DatabaseState` for the given path (not yet open)."""
+    return DatabaseState(NestQuestDatabase(_executor), db_path)
+
+
+__all__ = [
+    "DatabaseState",
+    "NestQuestDatabase",
+    "apply_migrations",
+    "make_database",
+]

api/dependencies.py

@@ -0,0 +1,81 @@
+"""Reusable FastAPI dependencies for the NestQuest API routes.
+
+The panel plane (``/api/v1/panel/*``) is authenticated by the static
+service token configured through ``NESTQUEST_PANEL_TOKEN`` (D-012): the
+HA integration presents it as a Bearer credential on every panel
+request.  :func:`require_panel_token` is the ONE implementation of that
+check — every panel route (this task's snapshot route and each later
+panel route) declares it as a dependency rather than re-implementing
+token handling, so the credential, the failure behaviour, and the
+401 contract stay in exactly one place.
+
+The dependency FAILS CLOSED: a missing ``Authorization`` header, a
+malformed one (wrong scheme or empty credential), a token that does not
+match the configured value, and an empty configured token all yield
+HTTP 401.  The comparison is constant-time (:func:`secrets.compare_digest`)
+so the wall-clock difference between "wrong length" and "wrong value"
+cannot be used to probe the token byte by byte, and every rejection
+carries the same detail — nothing in the response distinguishes which
+part of the check failed.
+"""
+from __future__ import annotations
+
+import secrets
+from typing import Annotated
+
+from fastapi import Header, HTTPException, Request
+
+#: The authorization scheme the panel plane expects.  Matched
+#: case-insensitively, as RFC 9110 requires for scheme names.
+_BEARER_SCHEME = "bearer"
+
+#: The 401 detail shared by every rejection — deliberately uniform so
+#: the response never reveals which part of the check failed.
+_REJECTION_DETAIL = "Missing or invalid panel service token"
+
+#: Challenge header returned with a 401, per the Bearer auth scheme.
+_WWW_AUTHENTICATE = {"WWW-Authenticate": "Bearer"}
+
+
+def _reject() -> HTTPException:
+    """Build the single 401 the dependency raises for every failure."""
+    return HTTPException(
+        status_code=401,
+        detail=_REJECTION_DETAIL,
+        headers=_WWW_AUTHENTICATE,
+    )
+
+
+async def require_panel_token(
+    request: Request,
+    authorization: Annotated[str | None, Header()] = None,
+) -> None:
+    """Reject the request with 401 unless it carries the panel token.
+
+    Reads the configured token off ``app.state.config`` (set by
+    :func:`api.app.create_app`) so the dependency stays reusable across
+    routes and carries no module state of its own.  A missing or
+    malformed ``Authorization`` header, a non-matching credential, and
+    an EMPTY configured token (a wiring mistake) all raise the same
+    ``HTTPException(401)`` — the check is closed even when the service
+    is misconfigured.
+
+    Returns ``None`` on success; FastAPI discards a ``None`` return,
+    the route handler simply proceeds.
+    """
+    config = getattr(request.app.state, "config", None)
+    expected = config.panel_token if config is not None else ""
+    if not expected or authorization is None:
+        raise _reject()
+    scheme, _, credential = authorization.partition(" ")
+    if scheme.lower() != _BEARER_SCHEME or not credential.strip():
+        raise _reject()
+    # compare_digest on bytes so a non-ASCII token raises nothing and a
+    # timing side channel on the str path is not available.
+    if not secrets.compare_digest(
+        credential.strip().encode("utf-8"), expected.encode("utf-8")
+    ):
+        raise _reject()
+
+
+__all__ = ["require_panel_token"]

api/events.py

@@ -0,0 +1,78 @@
+"""The ONE in-process transition-event publisher for the API service.
+
+Route handlers call :meth:`TransitionPublisher.publish` synchronously
+(no ``await``, callable from any async handler); SSE subscribers stream
+those transitions through an async generator.  The scope of "ONE" is
+deliberate: a single :class:`TransitionPublisher` instance is created
+in the app lifespan and stored on ``app.state.publisher`` — per-app,
+so tests build their own hermetic app without module-level state, and
+both the panel complete route and the SSE endpoint resolve the SAME
+instance off ``request.app.state`` (exactly one publisher exists per
+running app; nothing else may create one).
+
+Design (small and dependency-free, asyncio only):
+
+- Each subscriber gets its own ``asyncio.Queue(maxsize=64)``.
+- ``publish`` is synchronous and non-blocking: it puts the event on
+  every live queue with ``put_nowait``.  A slow subscriber that lets
+  its queue fill gets the event DROPPED (oldest overflow) — never a
+  blocked publisher, never unbounded growth.
+- A disconnected subscriber's queue is removed in the generator's
+  ``finally`` block, so teardown is clean and a closed consumer cannot
+  leak its queue.
+
+Fan-out is fire-and-forget by design: the SSE plane mirrors transition
+events for the panel UI; a dropped event costs the panel one UI
+refresh, and the documented recovery path is the next snapshot poll.
+"""
+from __future__ import annotations
+
+import asyncio
+from collections.abc import AsyncIterator
+
+#: Per-subscriber queue capacity.  Bounded so a stalled consumer can
+#: never make the publisher or another subscriber wait; beyond this
+#: the slow subscriber drops the event (see module docstring).
+_QUEUE_MAXSIZE = 64
+
+__all__ = ["TransitionPublisher"]
+
+
+class TransitionPublisher:
+    """A single in-process fan-out point for transition events."""
+
+    def __init__(self) -> None:
+        """Create the publisher with no subscribers."""
+        self._subscribers: set[asyncio.Queue] = set()
+
+    def publish(self, event_type: str, payload: dict) -> None:
+        """Fan one transition event out to every current subscriber.
+
+        Synchronous and non-blocking: each subscriber's bounded queue
+        is filled with ``put_nowait``, and a FULL queue silently drops
+        the event for that (slow) subscriber rather than blocking the
+        route handler or growing without bound.
+        """
+        for queue in tuple(self._subscribers):
+            try:
+                queue.put_nowait((event_type, payload))
+            except asyncio.QueueFull:
+                # The subscriber is not keeping up; drop the event for
+                # it and move on (the panel recovers by polling).
+                pass
+
+    async def subscribe(self) -> AsyncIterator[tuple[str, dict]]:
+        """Yield ``(event_type, payload)`` tuples until the consumer breaks.
+
+        Registers ONE bounded queue for the duration of the iteration
+        and removes it in the ``finally`` block, so a client disconnect
+        (or any break out of the loop) tears the subscription down
+        cleanly with no leaked queue.
+        """
+        queue: asyncio.Queue = asyncio.Queue(maxsize=_QUEUE_MAXSIZE)
+        self._subscribers.add(queue)
+        try:
+            while True:
+                yield await queue.get()
+        finally:
+            self._subscribers.discard(queue)

api/nestquest_core.py

@@ -0,0 +1,228 @@
+"""Transitional coupling: import ``core`` without importing Home Assistant.
+
+The NestQuest domain ``core`` package (Feature 15) is bundled INSIDE the
+Home Assistant integration at ``custom_components/nestquest/core/``.
+Importing it the obvious way — ``import custom_components.nestquest.core``
+— would execute ``custom_components/nestquest/__init__.py``, which
+imports ``homeassistant``.  Home Assistant is NOT installed in the API
+service's runtime, so that import raises ``ModuleNotFoundError`` and the
+API cannot start.
+
+``core`` itself is a clean, Home-Assistant-free package: its
+``__init__.py`` is a bare docstring and every internal import is
+relative (``from .db import ...``).  It can therefore be imported by
+file location as a standalone package.
+
+This module loads ``core`` with :func:`importlib.util.spec_from_file_location`
+— registering it under the distinct top-level name ``nestquest_core``
+with ``submodule_search_locations`` set to the bundled ``core``
+directory — so its relative imports resolve against that directory
+without touching ``sys.path``.  No generic top-level name (``db``,
+``const``, ``schema``, ...) is published, so nothing here can silently
+shadow a future dependency, and the integration's HA-coupled
+``__init__.py`` is never executed: ``custom_components.nestquest`` is
+never imported.
+
+Usage::
+
+    from api.nestquest_core import core_db, core_migrations
+    # core_db.NestQuestDatabase, core_migrations.apply_migrations, ...
+
+This is a TRANSITIONAL coupling.  Feature 18 (task 430f7f98) converts
+the integration into a thin API client and moves ``core`` out of the
+integration bundle; once that lands, this bootstrap helper goes away and
+the API imports ``core`` as an ordinary installed dependency.
+
+NOTE on the pytest process: the suite's ``conftest.py`` stubs the
+parent integration package and imports ``custom_components.nestquest.core.*``
+BEFORE any API test runs, so two copies of the core package coexist in
+the pytest process — the one registered here as ``nestquest_core.*``
+(loaded by file location) and the conftest-stubbed
+``custom_components.nestquest.core.*``.  Later tasks must NOT compare
+class or exception identity across these two copies: a
+``nestquest_core.db.NestQuestDatabase`` is a DIFFERENT class object from
+``custom_components.nestquest.core.db.NestQuestDatabase`` even though
+they share source.  Operate on a single copy within any one code path.
+"""
+from __future__ import annotations
+
+import importlib
+import importlib.util
+import sys
+from pathlib import Path
+from types import ModuleType
+
+#: The repository root (this file is ``<root>/api/nestquest_core.py``).
+_REPO_ROOT: Path = Path(__file__).resolve().parent.parent
+
+#: The bundled ``core`` package directory, inside the HA integration.
+_CORE_DIR: Path = _REPO_ROOT / "custom_components" / "nestquest" / "core"
+
+#: The ``core`` package's ``__init__.py`` — a bare docstring, so loading
+#: it by file location executes no imports of its own.
+_CORE_INIT: Path = _CORE_DIR / "__init__.py"
+
+#: The distinct top-level name under which the bundled ``core`` package
+#: is registered in ``sys.modules``.  A distinctive name (rather than the
+#: generic ``core``) avoids publishing shadow-able top-level names and
+#: keeps the bundled copy separate from the conftest-stubbed
+#: ``custom_components.nestquest.core`` present in the pytest process.
+_CORE_MODULE_NAME = "nestquest_core"
+
+
+def _load_core() -> ModuleType:
+    """Load the bundled ``core`` package by file location and return it.
+
+    Registers the package under :data:`_CORE_MODULE_NAME` in
+    ``sys.modules`` with ``submodule_search_locations`` pointing at the
+    bundled directory, so its relative imports (``from .db import ...``)
+    resolve to ``nestquest_core.<submodule>`` against that directory
+    without mutating ``sys.path``.  Idempotent: a second call returns
+    the already-registered module.
+    """
+    existing = sys.modules.get(_CORE_MODULE_NAME)
+    if existing is not None:
+        return existing
+    spec = importlib.util.spec_from_file_location(
+        _CORE_MODULE_NAME,
+        _CORE_INIT,
+        submodule_search_locations=[str(_CORE_DIR)],
+    )
+    if spec is None or spec.loader is None:
+        raise ImportError(f"could not load core from {_CORE_INIT}")
+    module = importlib.util.module_from_spec(spec)
+    sys.modules[_CORE_MODULE_NAME] = module
+    spec.loader.exec_module(module)
+    return module
+
+
+#: The bundled core package, loaded by file location and registered as
+#: ``nestquest_core`` in ``sys.modules``.  Held here so callers import the
+#: submodules through it (``nestquest_core.db``, ``nestquest_core.migrations``)
+#: the same relative way the integration does.
+core: ModuleType = _load_core()
+
+#: Re-exported for convenience; route handlers import these names from
+#: here rather than reaching into the core package directly.
+core_db = importlib.import_module(f"{_CORE_MODULE_NAME}.db")
+core_migrations = importlib.import_module(f"{_CORE_MODULE_NAME}.migrations")
+
+#: The panel snapshot builder and its payload shaper
+#: (``core.snapshot.build_snapshot`` / ``instance_payload``) — the pure
+#: assembly the panel routes call.
+core_snapshot = importlib.import_module(f"{_CORE_MODULE_NAME}.snapshot")
+
+#: The completion service (``core.completion.complete_instance`` /
+#: ``uncomplete_instance``) the panel's write routes call.
+core_completion = importlib.import_module(f"{_CORE_MODULE_NAME}.completion")
+
+#: The read-only history layer (``core.history.query_history``,
+#: ``export_history_csv``, ``rows_to_csv``) the admin plane's history
+#: query and CSV export routes call.
+core_history = importlib.import_module(f"{_CORE_MODULE_NAME}.history")
+
+#: The transition-event builders (``core.events.build_quest_completed_event``
+#: et al.) the panel's write routes build their SSE events with.
+core_events = importlib.import_module(f"{_CORE_MODULE_NAME}.events")
+
+#: The explicit settings object (``core.settings.NestQuestSettings``)
+#: the snapshot builder's ``settings`` parameter takes.
+core_settings = importlib.import_module(f"{_CORE_MODULE_NAME}.settings")
+
+#: The durable settings store (``core.settings_store.load_settings`` /
+#: ``update_settings``) the admin plane's settings routes read and
+#: write — the API's OWN settings source: a validated JSON document in
+#: the existing ``nestquest_meta_state`` table, resolved through the
+#: same core settings validators (the integration's HA config-entry
+#: options remain a temporary separate source until Feature 18 wires
+#: the client to the API).
+core_settings_store = importlib.import_module(
+    f"{_CORE_MODULE_NAME}.settings_store"
+)
+
+#: The children business layer (``core.children.create_child`` et al.)
+#: the admin plane's children routes call.
+core_children = importlib.import_module(f"{_CORE_MODULE_NAME}.children")
+
+#: The quest-definition business layer (``core.quest_definitions`` —
+#: ``create_quest_definition``, ``edit_quest_definition``,
+#: ``set_quest_definition_active``) the admin plane's quest-definition
+#: routes call.
+core_quest_definitions = importlib.import_module(
+    f"{_CORE_MODULE_NAME}.quest_definitions"
+)
+
+#: The recurrence model (``core.recurrence.ScheduleRule`` and
+#: ``RuleValidationError``) the quest-definition routes build request
+#: rules with — the model validates at construction, the routes never
+#: re-implement rule validation.
+core_recurrence = importlib.import_module(f"{_CORE_MODULE_NAME}.recurrence")
+
+#: The presence model (``core.presence.PresenceEngine``,
+#: ``PresenceSchedule``, ``PresenceOverride``) the admin plane's
+#: presence routes serialize and the tests resolve presence with.
+core_presence = importlib.import_module(f"{_CORE_MODULE_NAME}.presence")
+
+#: The presence-write business layer
+#: (``core.presence_management.set_presence_schedule`` et al.) the
+#: admin plane's presence routes call — the ONE implementation the HA
+#: services share.
+core_presence_management = importlib.import_module(
+    f"{_CORE_MODULE_NAME}.presence_management"
+)
+
+#: The typed presence DAOs (``core.dao_presence``) the admin-plane tests
+#: read stored schedules and overrides back through.
+core_dao_presence = importlib.import_module(
+    f"{_CORE_MODULE_NAME}.dao_presence"
+)
+
+#: The materialization walk (``core.materialize.materialize``,
+#: ``regenerate_for_definition``, ``regenerate_for_child``) the admin
+#: plane's regenerate route calls — the same walk the integration's
+#: config/presence changes trigger.
+core_materialize = importlib.import_module(f"{_CORE_MODULE_NAME}.materialize")
+
+#: The core constants module (``core.const.DEFAULT_HORIZON_DAYS``) the
+#: regenerate route sizes the household rolling horizon with.
+core_const = importlib.import_module(f"{_CORE_MODULE_NAME}.const")
+
+#: The typed child DAO (``core.dao_children.ChildrenDao.get``) the
+#: regenerate route reads a child's existence with before delegating.
+core_dao_children = importlib.import_module(
+    f"{_CORE_MODULE_NAME}.dao_children"
+)
+
+#: The typed definition DAO (``core.dao_rules.QuestDefinitionsDao.get``)
+#: the regenerate route reads a definition's existence with before
+#: delegating.
+core_dao_rules = importlib.import_module(f"{_CORE_MODULE_NAME}.dao_rules")
+
+#: The HA-free missed sweep (``core.sweep.run_missed_sweep`` +
+#: ``SWEEP_WATERMARK_KEY``) the admin plane's trigger route calls and
+#: the daily scheduler runs — the ONE sweep policy the integration's
+#: bus shim shares.
+core_sweep = importlib.import_module(f"{_CORE_MODULE_NAME}.sweep")
+
+__all__ = [
+    "core",
+    "core_children",
+    "core_completion",
+    "core_const",
+    "core_dao_children",
+    "core_dao_presence",
+    "core_dao_rules",
+    "core_db",
+    "core_events",
+    "core_history",
+    "core_materialize",
+    "core_migrations",
+    "core_presence",
+    "core_presence_management",
+    "core_quest_definitions",
+    "core_recurrence",
+    "core_snapshot",
+    "core_settings",
+    "core_settings_store",
+    "core_sweep",
+]

api/routes_panel.py

@@ -0,0 +1,373 @@
+"""Panel-plane routes for the NestQuest API service.
+
+The panel plane (``/api/v1/panel/*``, D-012) serves the wall panel's
+reads.  Every route on :data:`router` requires the panel service token
+through the ONE reusable dependency :func:`api.dependencies.require_panel_token`
+(declared once at the router level, so each later panel route added to
+this router inherits the check).
+
+The snapshot route is a thin adapter over the bundled core: it performs
+NO business logic.  It reads the live database off ``app.state.db``,
+resolves ONE timezone-aware ``now`` (the API host's local time — the
+API is the household's "local" host now that the domain no longer lives
+inside Home Assistant), calls the pure
+:func:`nestquest_core.snapshot.build_snapshot`, shapes each child's
+instances through :func:`nestquest_core.snapshot.instance_payload` with
+``include_missed=False`` (D-009: missed instances are OMITTED from the
+panel payload), and returns the documented JSON shape:
+
+.. code-block:: json
+
+    {
+      "today_iso": "2026-09-22",
+      "cycle_day": 2,
+      "children": [
+        {
+          "child_id": 1,
+          "child_name": "Ada",
+          "present": false,
+          "next_present": "2026-09-24",
+          "due_today": 1,
+          "completed_today": 0,
+          "remaining_today": 1,
+          "completion_pct": 0,
+          "instances": [
+            {"id": 7, "definition_id": 3, "child_id": 1,
+             "title": "Pack bag", "icon": null, "window": "morning",
+             "due_time": "10:00", "state": "open", "overdue": true,
+             "completed_at": null, "on_time": null}
+          ]
+        }
+      ]
+    }
+
+``children`` follows the household's sort order (the core builder lists
+active children ``ORDER BY sort_order, id``); ``state`` is the
+documented panel spelling ``open`` | ``completed`` (§1 of
+design/ENTITIES-AND-SERVICES.md); ``cycle_day`` is today's 1-based day
+in the first scheduled child's custody cycle (0 when no child has one).
+The same :class:`PanelSnapshotResponse` Pydantic model is the route's
+``response_model``, so the OpenAPI document carries the shape too.
+"""
+from __future__ import annotations
+
+import datetime
+import importlib
+import json
+
+from collections.abc import AsyncIterator
+
+from fastapi import APIRouter, Depends, HTTPException, Request
+from fastapi.responses import StreamingResponse
+from pydantic import BaseModel, field_validator
+
+from api.database import DatabaseState
+from api.dependencies import require_panel_token
+from api.nestquest_core import (
+    core_completion,
+    core_events,
+    core_settings,
+    core_snapshot,
+)
+from api import transitions as api_transitions
+
+#: The instance DAO, imported on the app's core copy for the
+#: child-mismatch guard on the complete route.
+_dao_instances = importlib.import_module("nestquest_core.dao_instances")
+
+#: All panel-plane routes share this router; the service-token check is
+#: attached HERE so every panel route (current and later) requires it.
+router = APIRouter(
+    prefix="/api/v1/panel",
+    dependencies=[Depends(require_panel_token)],
+)
+
+
+class PanelInstancePayload(BaseModel):
+    """One instance in the documented panel payload shape (§1).
+
+    Mirrors :func:`nestquest_core.snapshot.instance_payload`:
+    ``state`` is ``open`` | ``completed`` (missed instances never reach
+    the panel payload), ``on_time`` passes the completion event's flag
+    through verbatim (``None`` for an open instance), and
+    ``completed_at`` is the event's UTC timestamp when completed.
+    """
+
+    id: int
+    definition_id: int
+    child_id: int
+    title: str
+    icon: str | None
+    window: str
+    due_time: str | None
+    state: str
+    overdue: bool
+    completed_at: str | None
+    on_time: bool | None
+
+
+class PanelChildPayload(BaseModel):
+    """One child's day: presence, rollup counts, and today's instances."""
+
+    child_id: int
+    child_name: str
+    present: bool
+    #: ISO date of the child's next present day while they are away
+    #: (the away plate renders ``Returns <weekday>, <Mon D>`` from it);
+    #: ``None`` when the child is present today.
+    next_present: str | None
+    due_today: int
+    completed_today: int
+    remaining_today: int
+    completion_pct: int
+    instances: list[PanelInstancePayload]
+
+
+class PanelSnapshotResponse(BaseModel):
+    """The whole household snapshot the panel renders from.
+
+    ``today_iso`` anchors the payload's day; ``cycle_day`` is today's
+    1-based day in the first scheduled child's custody cycle (0 when no
+    child has a schedule); ``children`` is in the household's sort
+    order.
+    """
+
+    today_iso: str
+    cycle_day: int
+    children: list[PanelChildPayload]
+
+
+class PanelCompleteRequest(BaseModel):
+    """The body of ``POST /api/v1/panel/instances/{id}/complete``.
+
+    Matches the panel's ``nestquest.complete_quest`` payload (§2 of
+    design/ENTITIES-AND-SERVICES.md): ``actor_child_id`` is the tapped
+    profile.  A positive integer is required — the core completion
+    layer rejects non-int (and bool) ids anyway, but rejecting them
+    here with 422 keeps the contract visible in the OpenAPI document
+    and fails before any database work.
+    """
+
+    actor_child_id: int
+
+    model_config = {
+        "json_schema_extra": {
+            "description": (
+                "The tapped child profile the completion is "
+                "attributed to (decision 9)."
+            )
+        }
+    }
+
+    @field_validator("actor_child_id")
+    @classmethod
+    def _positive(cls, value: int) -> int:
+        """Reject zero and negative ids with a validation error."""
+        if value < 1:
+            raise ValueError("actor_child_id must be a positive integer")
+        return value
+
+
+def _local_now() -> datetime.datetime:
+    """Return the API host's local time as ONE timezone-aware clock read.
+
+    ``now().astimezone()`` attaches the host's local timezone to a
+    single clock read, so the calendar date and wall-clock time the
+    builder derives can never disagree.  Kept as a module function (not
+    inlined) so tests pin the instant the same way the coordinator's
+    ``_local_now`` is pinned.
+    """
+    return datetime.datetime.now().astimezone()
+
+
+@router.get(
+    "/snapshot",
+    summary="Today's household snapshot",
+    response_model=PanelSnapshotResponse,
+)
+async def panel_snapshot(request: Request) -> PanelSnapshotResponse:
+    """Return today's full household snapshot for the panel.
+
+    Requires the panel service token (checked by the router's shared
+    :func:`~api.dependencies.require_panel_token` dependency).  Builds
+    the snapshot through the pure core builder against the live
+    database and shapes each child's instances with
+    ``instance_payload(include_missed=False)`` — missed instances are
+    OMITTED from the panel payload (D-009) — then returns the shape
+    documented in this module's docstring and
+    :class:`PanelSnapshotResponse`.
+    """
+    state: DatabaseState = request.app.state.db
+    snapshot = await core_snapshot.build_snapshot(
+        state.database, core_settings.NestQuestSettings(), _local_now()
+    )
+    return PanelSnapshotResponse(
+        today_iso=snapshot.today_iso,
+        cycle_day=snapshot.cycle_day,
+        children=[
+            PanelChildPayload(
+                child_id=child.child_id,
+                child_name=child.child_name,
+                present=child.present,
+                next_present=child.next_present,
+                due_today=child.due_today,
+                completed_today=child.completed_today,
+                remaining_today=child.remaining_today,
+                completion_pct=child.completion_pct,
+                instances=[
+                    PanelInstancePayload.model_validate(instance)
+                    for instance in core_snapshot.instance_payload(
+                        child.instances, include_missed=False
+                    )
+                ],
+            )
+            for child in snapshot.children
+        ],
+    )
+
+
+@router.post(
+    "/instances/{instance_id}/complete",
+    summary="Complete one quest instance",
+    status_code=200,
+)
+async def panel_complete_instance(
+    instance_id: int, body: PanelCompleteRequest, request: Request
+) -> dict[str, str]:
+    """Complete one quest instance as the tapped child profile.
+
+    Requires the panel service token (checked by the router's shared
+    :func:`~api.dependencies.require_panel_token` dependency — the ONE
+    token check; this handler performs NO auth of its own).
+
+    Thin adapter only: resolves the live database off ``app.state.db``,
+    reads ONE timezone-aware clock (:func:`_local_now`), and delegates
+    to :func:`nestquest_core.completion.complete_instance` with
+    ``actor_source="panel"`` and the tapped ``actor_child_id`` — the
+    append/idempotence logic, the lock, and the actor-shape validation
+    all live in the core layer, never here.
+
+    Response and idempotence: ``complete_instance`` returns a
+    :class:`~nestquest_core.completion.CompletionResult` whose
+    ``appended`` flag reports whether THIS call wrote an event; a
+    repeat call for an already-completed instance is a no-op inside
+    the core layer (no duplicate event) and this route still answers
+    ``{"status": "done"}`` either way, so a retried panel tap succeeds.
+
+    Error mapping (deliberately narrow): the ONLY ``ValueError`` mapped
+    to 404 is the unknown-``instance_id`` one, identified by the
+    ``instance_id:`` prefix ``complete_instance`` names the failing
+    field with.  Every other ``ValueError`` (an invalid actor shape,
+    which the body model and the panel actor contract already make
+    unreachable) re-raises to the framework's 500 — nothing else is
+    turned into a 404 or a 500 of our own making.
+
+    Child mismatch: ``complete_instance`` verifies the tapped
+    ``actor_child_id`` exists but does NOT check it is the child the
+    instance belongs to.  The route performs that check here (one
+    ``QuestInstancesDao.get_by_id`` read) and answers 404 when the
+    instance's ``child_id`` differs — completing another child's quest
+    from the wrong profile must not succeed, and 404 (not 403) keeps
+    the instance's existence from leaking to a wrong-profile tap.
+    """
+    state: DatabaseState = request.app.state.db
+    database = state.database
+
+    # Child-mismatch guard (see docstring): the instance must belong to
+    # the tapped profile before the completion layer is entered.
+    instance = await _dao_instances.QuestInstancesDao(database).get_by_id(
+        instance_id
+    )
+    if instance is not None and instance.child_id != body.actor_child_id:
+        raise HTTPException(
+            status_code=404,
+            detail="Quest instance not found for this child",
+        )
+
+    now = _local_now()
+    try:
+        result = await core_completion.complete_instance(
+            database,
+            instance_id,
+            actor_source="panel",
+            actor_child_id=body.actor_child_id,
+            now=now,
+        )
+    except ValueError as error:
+        message = str(error)
+        if message.startswith("instance_id:"):
+            # complete_instance names the field in its ValueError:
+            # "instance_id: quest instance N does not exist".
+            raise HTTPException(
+                status_code=404,
+                detail="Quest instance not found",
+            ) from error
+        raise
+    # The derived state is "done" in both the appended and no-op cases;
+    # ``result.appended`` distinguishes them for callers that care —
+    # the panel route returns the same success either way.
+    if result.appended:
+        # An ACTUAL transition: publish the SSE transition event.  The
+        # payload is built by the core builder (never hand-built here)
+        # and fan-out is fire-and-forget (see api/events.py).
+        event_type, payload = await core_events.build_quest_completed_event(
+            database, instance_id, was_on_time=result.was_on_time
+        )
+        request.app.state.publisher.publish(event_type, payload)
+        # THEN evaluate the day-complete rule off the completed event's
+        # payload (the core builder decides when the child's whole day
+        # is cleared — a zero-quest day and a non-today instance never
+        # fire it).  ``today`` comes from the route's single clock read
+        # so the calendar date can never disagree with the completion's.
+        await api_transitions.publish_child_day_complete(
+            database,
+            payload,
+            now.date(),
+            request.app.state.publisher,
+        )
+    return {"status": str(result)}
+
+
+async def _sse_stream(request: Request) -> AsyncIterator[str]:
+    """Yield the SSE frames for every published transition event.
+
+    One subscriber of the app's single publisher (resolved off
+    ``app.state.publisher``); each event becomes one
+    ``event: <type>\\ndata: <json>\\n\\n`` frame.  Breaking out of the
+    publisher's subscription (on client disconnect) tears the
+    subscription down cleanly — no queue is leaked.
+    """
+    publisher = request.app.state.publisher
+    async for event_type, payload in publisher.subscribe():
+        yield (
+            f"event: {event_type}\n"
+            f"data: {json.dumps(payload)}\n\n"
+        )
+
+
+@router.get(
+    "/events",
+    summary="Stream panel transition events (SSE)",
+)
+async def panel_events(request: Request) -> StreamingResponse:
+    """Stream the app's transition events to the panel (Server-Sent
+    Events).
+
+    Requires the panel service token (checked by the router's shared
+    :func:`~api.dependencies.require_panel_token` dependency — the ONE
+    token check; this handler performs NO auth of its own).
+
+    Returns a ``text/event-stream`` response whose body is produced by
+    :func:`_sse_stream` off the app's single in-process publisher
+    (``app.state.publisher``, installed in the lifespan).  The stream
+    ends when the client disconnects, at which point the subscription
+    is torn down (its queue removed) with nothing leaked.
+    """
+    return StreamingResponse(
+        _sse_stream(request),
+        media_type="text/event-stream",
+        headers={"Cache-Control": "no-cache"},
+    )
+
+
+__all__ = ["router"]

api/scheduler.py

@@ -0,0 +1,173 @@
+"""Daily missed-sweep background scheduler for the API service.
+
+The API service has no Home Assistant, so nobody re-fires the
+integration's day-rollover listener for it: this module owns the API
+plane's own background job.  One :class:`MissedSweepScheduler` per app
+(installed on ``app.state`` by the lifespan) sleeps until the
+configured ``day_rollover_time`` — read fresh from the settings store
+at the top of EVERY cycle, so an admin's settings change applies on
+the next scheduling decision without a restart — then runs the
+HA-free core's :func:`nestquest_core.sweep.run_missed_sweep` for the
+API host's local date and publishes each returned
+``nestquest_quest_missed`` event on the app's ONE transition publisher
+(the same SSE stream every route publishes through).
+
+All sweep policy lives in the core (the watermark, the
+``[watermark, today)`` window, the no-completion-event rule): this
+scheduler only decides WHEN.  A same-night rerun — e.g. two workers,
+or a settings change moving the rollover past itself — fires nothing:
+the core's watermark makes the run an empty no-op.
+
+Testability: ``clock`` (an aware-now callable) and ``sleep`` (an
+awaitable delay) are injectable, so tests pin the time, fast-forward
+through the wait, and observe the computed delays without waiting a
+real day.  Cancellation: :meth:`stop` cancels the loop task and waits
+for it, so the lifespan's shutdown is clean and a mid-run sweep is
+interrupted before the connection closes.  A failed iteration (a
+database hiccup, a rejected setting) is logged and retried after a
+fixed backoff rather than silently killing the job.
+"""
+from __future__ import annotations
+
+import asyncio
+import datetime
+import logging
+
+from api.nestquest_core import core_settings_store, core_sweep
+
+LOGGER = logging.getLogger(__name__)
+
+#: Backoff after a failed scheduling cycle (settings read or sweep
+#: error), so a persistent failure retries every minute instead of
+#: spinning or dying.
+_RETRY_BACKOFF_SECONDS = 60.0
+
+
+def _delay_seconds(target: datetime.time, now: datetime.datetime) -> float:
+    """Seconds from ``now`` until the next occurrence of ``target``.
+
+    ``target`` is a plain ``HH:MM`` time of day: the next wall-clock
+    occurrence strictly AFTER ``now`` (an equal time schedules for
+    tomorrow, so the just-run sweep is never instantly re-run).
+    """
+    scheduled = now.replace(
+        hour=target.hour, minute=target.minute, second=0, microsecond=0
+    )
+    if scheduled <= now:
+        scheduled += datetime.timedelta(days=1)
+    return (scheduled - now).total_seconds()
+
+
+class MissedSweepScheduler:
+    """Run the missed sweep once per day at ``day_rollover_time``."""
+
+    def __init__(
+        self,
+        database: object,
+        *,
+        publisher: object | None = None,
+        clock: object | None = None,
+        sleep: object | None = None,
+    ) -> None:
+        """Create the scheduler (not yet running).
+
+        ``database`` is the app's live :class:`~api.database.NestQuestDatabase`.
+        ``publisher`` is the app's ONE
+        :class:`~api.events.TransitionPublisher` (publishing is skipped
+        when ``None``).  ``clock`` defaults to the API host's local
+        aware now (``datetime.datetime.now().astimezone()``) — the same
+        single-clock discipline the routes' ``_local_now`` uses;
+        ``sleep`` defaults to :func:`asyncio.sleep`.
+        """
+        self._database = database
+        self._publisher = publisher
+        self._clock = clock if clock is not None else (
+            lambda: datetime.datetime.now().astimezone()
+        )
+        self._sleep = sleep if sleep is not None else asyncio.sleep
+        self._task: asyncio.Task | None = None
+
+    def start(self) -> None:
+        """Start the background loop (idempotent: a running one stays)."""
+        if self._task is None or self._task.done():
+            self._task = asyncio.create_task(
+                self._run_forever(), name="nestquest-missed-sweep"
+            )
+
+    async def stop(self) -> None:
+        """Cancel the loop and wait for it to finish (safe if never started)."""
+        if self._task is not None:
+            self._task.cancel()
+            try:
+                await self._task
+            except asyncio.CancelledError:
+                pass
+            self._task = None
+
+    @property
+    def running(self) -> bool:
+        """Whether the background loop task is alive."""
+        return self._task is not None and not self._task.done()
+
+    async def _run_forever(self) -> None:
+        """Schedule → sweep → repeat, forever (until cancelled)."""
+        while True:
+            try:
+                settings = await core_settings_store.load_settings(
+                    self._database
+                )
+                rollover = datetime.time.fromisoformat(
+                    settings.day_rollover_time
+                )
+            except Exception:
+                # Not silent: the failure is logged and retried after
+                # the backoff, so one bad settings document or a
+                # transient database error never kills the scheduler.
+                LOGGER.exception(
+                    "NestQuest missed-sweep scheduler failed to resolve "
+                    "the day rollover time; retrying in %gs",
+                    _RETRY_BACKOFF_SECONDS,
+                )
+                await self._sleep(_RETRY_BACKOFF_SECONDS)
+                continue
+            delay = _delay_seconds(rollover, self._clock())
+            LOGGER.info(
+                "NestQuest missed sweep scheduled for %s (%.0fs from now)",
+                settings.day_rollover_time,
+                delay,
+            )
+            await self._sleep(delay)
+            try:
+                await self._run_once(self._clock().date())
+            except Exception:
+                # Not silent either: the sweep error is logged and the
+                # loop backs off before the next cycle, whose watermark
+                # re-read makes an already-swept day a no-op.
+                LOGGER.exception(
+                    "NestQuest scheduled missed sweep failed; retrying in "
+                    "%gs",
+                    _RETRY_BACKOFF_SECONDS,
+                )
+                await self._sleep(_RETRY_BACKOFF_SECONDS)
+
+    async def _run_once(self, today: datetime.date) -> None:
+        """Run ONE sweep for ``today`` and publish what it built.
+
+        A failure propagates to :meth:`_run_forever`, which logs it and
+        backs off before the next cycle; the watermark makes a re-run
+        of an already-swept day announce nothing twice.
+        """
+        events = await core_sweep.run_missed_sweep(
+            self._database, today=today
+        )
+        for event_type, payload in events:
+            if self._publisher is not None:
+                self._publisher.publish(event_type, payload)
+        LOGGER.info(
+            "NestQuest scheduled missed sweep for %s published %d event(s)",
+            today.isoformat(),
+            len(events),
+        )
+
+
+__all__ = ["MissedSweepScheduler"]

api/transitions.py

@@ -0,0 +1,83 @@
+"""Reusable SSE transition publishers for the API service (task 44c93cfd).
+
+Each helper wraps the ONE publisher on ``app.state.publisher`` with a
+single documented transition: it builds the payload through the core
+event builders (``nestquest_core.events``) — never hand-built here —
+and fans it out with :meth:`~api.events.TransitionPublisher.publish`.
+
+The uncomplete route (follow-up task da0226b3) and the API-side missed
+sweep do not exist yet; these helpers are the functions they will call,
+and the SSE tests exercise them directly.  Fan-out stays fire-and-forget
+(see api/events.py): a slow subscriber drops the event and recovers by
+polling the snapshot.
+"""
+from __future__ import annotations
+
+import datetime
+
+from api.nestquest_core import core_events
+
+
+async def publish_quest_uncompleted(
+    database: object, instance_id: int, publisher: object
+) -> None:
+    """Publish ONE ``nestquest_quest_uncompleted`` event for an actual
+    reversal of ``instance_id``.
+
+    The payload is built by the core builder
+    (:func:`nestquest_core.events.build_quest_uncompleted_events`);
+    this helper only picks the single event out of the builder's list
+    and publishes it.
+    """
+    events = await core_events.build_quest_uncompleted_events(
+        database, instance_id
+    )
+    for event_type, payload in events:
+        publisher.publish(event_type, payload)
+
+
+async def publish_quest_missed(
+    database: object, instance_id: int, publisher: object
+) -> None:
+    """Publish ONE ``nestquest_quest_missed`` event for ``instance_id``.
+
+    The payload is built by the core builder
+    (:func:`nestquest_core.events.build_quest_missed_event`), which
+    mirrors the documented sweep payload exactly (§3 of
+    design/ENTITIES-AND-SERVICES.md).
+    """
+    event_type, payload = await core_events.build_quest_missed_event(
+        database, instance_id
+    )
+    publisher.publish(event_type, payload)
+
+
+async def publish_child_day_complete(
+    database: object,
+    completed_payload: dict,
+    today: datetime.date,
+    publisher: object,
+) -> bool:
+    """Publish ``nestquest_child_day_complete`` when a completion
+    cleared the child's whole day; return whether one was published.
+
+    The day-complete rule lives entirely in the core builder
+    (:func:`nestquest_core.events.build_child_day_complete_event`):
+    it returns ``None`` when the day did not clear (a zero-quest day
+    or a non-today instance) and this helper publishes nothing then.
+    """
+    event = await core_events.build_child_day_complete_event(
+        database, completed_payload, today=today
+    )
+    if event is None:
+        return False
+    event_type, payload = event
+    publisher.publish(event_type, payload)
+    return True
+
+
+__all__ = [
+    "publish_child_day_complete",
+    "publish_quest_missed",
+    "publish_quest_uncompleted",
+]

custom_components/nestquest/__init__.py

@@ -1,253 +1,102 @@
-"""The NestQuest integration."""
+"""The NestQuest integration (Feature 18: a thin client of the NestQuest API service).
+
+The integration owns NO database: the API service (Feature 16) owns the
+SQLite file, the migrations, and every business rule.  Setup builds the
+entry's ONE shared API client, the coordinator that polls the panel
+snapshot through it, and the SSE subscription that re-fires the API's
+transition frames on the HA bus, registers the single
+``nestquest.complete_quest`` proxy service, registers the zero-config
+panel dashboard (Feature 20), and forwards the sensor and
+binary_sensor platforms.
+"""
 from __future__ import annotations
 
-import asyncio
 import inspect
-import sqlite3
 from collections.abc import Callable
 from dataclasses import dataclass
-from pathlib import Path
 from typing import Any
 
 from homeassistant.config_entries import ConfigEntry
 from homeassistant.core import HomeAssistant
 from homeassistant.exceptions import ConfigEntryNotReady
 
-from .const import DOMAIN, LOGGER
-from .db import NestQuestDatabase
-from .migrations import apply_migrations
-from .store import async_get_db_path
+from .const import (
+    CONF_SNAPSHOT_STALENESS,
+    CONF_UPDATE_INTERVAL,
+    DEFAULT_SNAPSHOT_STALENESS,
+    DEFAULT_UPDATE_INTERVAL,
+    DOMAIN,
+    LOGGER,
+    PLATFORMS,
+)
+from .coordinator import NestQuestCoordinator, coordinator_client_from_entry
+from .dashboard import async_register_dashboard
+from .frontend import async_register_frontend
+from .services import async_deregister_services, async_register_services
+from .sse import NestQuestEventStream
 
 _LOGGER = LOGGER
 
-#: SQLite reports "file is not a database" for corruption in every
-#: sqlite3 version this integration targets; the version-specific
-#: "encrypted or malformed" spelling (3.41+) maps to the same failure.
-_CORRUPTION_MARKERS = (
-    "file is not a database",
-    "database disk image is malformed",
-    "encrypted or malformed",
-    "is not a database",
-)
-
-#: Primary sqlite error codes that mean "the file is corrupt" (SQLite
-#: result codes, https://www.sqlite.org/c3ref/c_abort.html).  Extended
-#: codes carry the primary code in their low byte, so the match is on
-#: errcode & 0xff.
-_CORRUPT_PRIMARY_CODES = frozenset({11, 26})  # SQLITE_CORRUPT, SQLITE_NOTADB
-
-
-def _is_corruption_error(error: BaseException) -> bool:
-    """Return True when ``error`` indicates a corrupt database file.
-
-    Classification order: sqlite_errorcode (Python 3.11+) is primary
-    and locale-independent — SQLITE_CORRUPT and SQLITE_NOTADB, matched
-    on the primary byte so extended codes (SQLITE_CORRUPT_VTAB etc.)
-    classify correctly too.  Message matching is the fallback for
-    older Pythons: the corruption spellings are the documented English
-    texts; a non-English locale could evade them, but the code check
-    already covers every locale on supported Pythons.
-    """
-    if not isinstance(error, sqlite3.DatabaseError):
-        return False
-    errorcode = getattr(error, "sqlite_errorcode", None)
-    if errorcode is not None and (errorcode & 0xFF) in _CORRUPT_PRIMARY_CODES:
-        return True
-    message = str(error).lower()
-    return any(marker in message for marker in _CORRUPTION_MARKERS)
-
-
-async def _preflight_existing_file(
-    hass: HomeAssistant, db_path: Path
-) -> None:
-    """Detect corruption in an EXISTING file before it is opened read-write.
-
-    Opening read-write persists WAL mode — for a rollback-journal file
-    that rewrites the header byte 18/19 and can create -wal/-shm
-    sidecars — which would modify a corrupt file before detection and
-    break the leave-untouched guarantee.  This preflight therefore
-    validates the WHOLE file with a READ-ONLY connection (mode=ro +
-    immutable=1 URI, PRAGMA integrity_check, run on the executor like
-    every other DB call): corruption anywhere fails there, before
-    anything is written.  ``immutable=1`` is SQLite's documented
-    guarantee that the connection performs NO writes and creates NO
-    sidecars — even a WAL-header file gets its -wal/-shm reads served
-    without creating the shared-memory file.  Missing/empty files skip
-    the preflight (they are created fresh by the real open).  All
-    filesystem stat/URI work runs inside the executor job with the
-    probe so the event loop never touches disk.
-    """
-    def _probe() -> None:
-        # The file-state check and URI construction live inside the
-        # executor job: exists/stat/resolve are disk I/O.
-        if not db_path.exists():
-            return
-        # A zero-byte file is neither missing nor a valid database: it
-        # is a corrupt (truncated-to-nothing) existing file, likely an
-        # interrupted first write.  The leave-untouched contract applies
-        # to it too: refuse rather than silently initialize over it.
-        if db_path.stat().st_size == 0:
-            raise sqlite3.DatabaseError(
-                "existing database file is empty (zero bytes): file is "
-                "not a database"
-            )
-        # Properly escape the path: '#'/'?'/'%' in a directory or file
-        # name would otherwise be parsed as URI fragments/parameters/
-        # escapes.  immutable=1: SQLite guarantees no writes and no
-        # sidecar creation from this connection.
-        uri = db_path.resolve().as_uri() + "?mode=ro&immutable=1"
-        conn = sqlite3.connect(uri, uri=True)
-        try:
-            row = conn.execute("PRAGMA integrity_check").fetchone()
-        finally:
-            conn.close()
-        verdict = row[0] if row else "missing"
-        if verdict != "ok":
-            # A non-ok integrity verdict IS corruption: raise with the
-            # verdict text (which matches the corruption markers) and
-            # the NOTADB code so classification is code-based.
-            raise sqlite3.DatabaseError(
-                f"integrity_check verdict {verdict!r} on read-only "
-                f"probe: file is not a database"
-            )
-
-    try:
-        # Every DB-touching call goes through the executor (the mock
-        # harness's async_add_executor_job is awaitable too).
-        await hass.async_add_executor_job(_probe)
-    except sqlite3.DatabaseError as err:
-        # Non-ok integrity verdicts are corruption, full stop: there is
-        # no benign reading of a failed whole-file integrity check, so
-        # ANY DatabaseError out of the probe that carries a corruption
-        # marker or code propagates as corruption.  Only exotic probe
-        # failures that classify as non-corruption (e.g. a transient
-        # 'database is locked' on the read) are downgraded to a debug
-        # log, letting the real open path surface them.
-        if _is_corruption_error(err):
-            raise
-        raise sqlite3.DatabaseError(
-            f"read-only corruption probe of {db_path} failed: {err}"
-        ) from err
-
-async def _async_open_database(
-    hass: HomeAssistant, db_path: Path
-) -> NestQuestDatabase:
-    """Open the NestQuest database, mapping failure modes for setup.
-
-    Three startup cases (Feature 02 done-condition):
-
-    - file missing: SQLite creates it fresh on open — no special path,
-      migrations stamp version 1 on the next step.
-    - file present and valid: opens normally.
-    - file present but corrupt: log an ERROR with the path, close
-      anything opened, and raise ConfigEntryNotReady so HA retries —
-      the file is left byte-for-byte untouched so the owner can
-      restore a backup.  No code path here deletes or overwrites an
-      existing database file.
-
-    Corruption can surface at EITHER stage: a truncated header fails
-    in the read-only preflight (before the file is ever opened
-    read-write), while damaged later pages fail during migrations —
-    the preflight guarantees no WAL sidecar or header write happens
-    on a corrupt file before it is detected.  Both are classified the
-    same way.
-    """
-    try:
-        await _preflight_existing_file(hass, db_path)
-        database = await NestQuestDatabase(hass).open(db_path)
-    except asyncio.CancelledError:
-        raise
-    except sqlite3.DatabaseError as err:
-        if _is_corruption_error(err):
-            _LOGGER.error(
-                "NestQuest database at %s is corrupt: %s. Refusing to "
-                "start with a corrupt database; the file was left "
-                "untouched so a backup can be restored. Home Assistant "
-                "will retry setup.",
-                db_path,
-                err,
-            )
-            raise ConfigEntryNotReady(
-                f"NestQuest database corrupt: {db_path}"
-            ) from err
-        # open() failed for a non-corruption reason (locked file,
-        # permission problem): retryable, but nothing was opened.
-        _LOGGER.error(
-            "NestQuest database at %s failed to open: %s. Home "
-            "Assistant will retry setup.",
-            db_path,
-            err,
-        )
-        raise ConfigEntryNotReady(
-            f"NestQuest database unavailable: {db_path}"
-        ) from err
-    try:
-        await apply_migrations(database)
-    except (sqlite3.DatabaseError, RuntimeError) as err:
-        await database.close()
-        if _is_corruption_error(err):
-            _LOGGER.error(
-                "NestQuest database at %s is corrupt: %s. Refusing to "
-                "start with a corrupt database; the file was left "
-                "untouched so a backup can be restored. Home Assistant "
-                "will retry setup.",
-                db_path,
-                err,
-            )
-            raise ConfigEntryNotReady(
-                f"NestQuest database corrupt: {db_path}"
-            ) from err
-        # A non-corruption failure (e.g. a locked file, a future schema
-        # version) is also a retryable setup problem, but without the
-        # corruption framing.
-        _LOGGER.error(
-            "NestQuest database at %s failed to open: %s. Home "
-            "Assistant will retry setup.",
-            db_path,
-            err,
-        )
-        raise ConfigEntryNotReady(
-            f"NestQuest database unavailable: {db_path}"
-        ) from err
-    except asyncio.CancelledError:
-        await database.close()
-        raise
-    return database
-
 
 @dataclass
 class NestQuestRuntimeData:
     """Runtime data stored on a NestQuest config entry."""
 
     entry_id: str
-    options: dict[str, Any]
-    database: NestQuestDatabase
     remove_update_listener: Callable[[], Any]
+    coordinator: Any = None
+    event_stream: NestQuestEventStream | None = None
+
+
+def _find_live_runtime_data(hass: HomeAssistant) -> NestQuestRuntimeData | None:
+    """Return a live runtime record with a coordinator, or None.
+
+    The domain-global service (the panel completion proxy) has no
+    database of its own; it resolves whichever config entry's runtime
+    data is currently live at call time, so it cannot hold a stale
+    handle to an unloaded entry's coordinator.
+    """
+    for runtime_data in hass.data.get(DOMAIN, {}).values():
+        if getattr(runtime_data, "coordinator", None) is not None:
+            return runtime_data
+    return None
+
+
+def _register_services(hass: HomeAssistant) -> None:
+    """Register the domain-global NestQuest service once.
+
+    The service is DOMAIN-global — registered exactly once (guarded by
+    ``has_service``) and NOT bound to any config entry — so the panel
+    completion proxy resolves the currently-live runtime at call time
+    and a name collision or duplicate setup is impossible.  Removal is
+    handled by the unload path only once the LAST entry is removed
+    (see :func:`_deregister_services`).
+    """
+    async_register_services(hass, find_runtime=_find_live_runtime_data)
+
+
+def _deregister_services(hass: HomeAssistant) -> None:
+    """Remove domain-global NestQuest services when the last entry unloads."""
+    async_deregister_services(hass)
 
 
 async def async_setup(hass: HomeAssistant, config: dict[str, Any]) -> bool:
     """Set up the NestQuest integration. YAML configuration is not used, returns True."""
+    await async_register_frontend(hass)
     return True
 
 
 async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
     """Set up NestQuest from a config entry."""
+    await async_register_frontend(hass)
+    # The zero-config panel dashboard (Feature 20): register the
+    # storage-mode strategy dashboard if no dashboard under the stable
+    # url_path exists yet.  Unavailability of the Lovelace dashboards
+    # collection (YAML mode, lovelace not loaded) logs a warning and
+    # NEVER fails setup; an existing dashboard — ours or the user's —
+    # is left untouched, so a reload cannot duplicate it.
+    await async_register_dashboard(hass)
     hass.data.setdefault(DOMAIN, {})
-    existing = hass.data[DOMAIN].get(entry.entry_id)
-    if existing is not None:
-        db = getattr(existing, "database", None)
-        if db is None or not db.connected:
-            # Reopen through the SAME safety path as first setup: a
-            # record without a live connection (a previous setup's
-            # close-on-failure, or a hand-replaced file) must get the
-            # missing/valid/corrupt classification too, never a raw
-            # sqlite3 error and never skipped migrations.
-            db = await _async_open_database(
-                hass, await async_get_db_path(hass)
-            )
-            existing.database = db
-        entry.runtime_data = existing
-        return True
 
     async def _async_update_listener(
         listener_hass: HomeAssistant, listener_entry: ConfigEntry
@@ -255,19 +104,115 @@ async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
         """Reload the entry when its options change."""
         await listener_hass.config_entries.async_reload(listener_entry.entry_id)
 
-    database = await _async_open_database(hass, await async_get_db_path(hass))
+    remove_update_listener: Callable[[], Any] | None = None
+    coordinator: Any = None
+    event_stream: NestQuestEventStream | None = None
     try:
         remove_update_listener = entry.add_update_listener(_async_update_listener)
+        _register_services(hass)
+        # ONE API client for the entry, shared by the coordinator's
+        # snapshot polling, the SSE subscription, and the completion
+        # proxy (the client is stateless — one session, one connection
+        # pool).  An entry with no panel token yet gets the
+        # typed-error stub (unavailable entities, never a setup crash).
+        api_client = coordinator_client_from_entry(hass, entry)
+        # The shared coordinator: one refresh cycle every entity reads
+        # from (CONF_UPDATE_INTERVAL seconds, default five minutes).
+        # It polls the API service's panel snapshot; a failed poll
+        # keeps the entities rendering the last-good snapshot within
+        # CONF_SNAPSHOT_STALENESS, unavailable past it.
+        coordinator = NestQuestCoordinator(
+            hass,
+            entry_id=entry.entry_id,
+            api_client=api_client,
+            update_interval_seconds=entry.options.get(
+                CONF_UPDATE_INTERVAL, DEFAULT_UPDATE_INTERVAL
+            ),
+            staleness_seconds=entry.options.get(
+                CONF_SNAPSHOT_STALENESS, DEFAULT_SNAPSHOT_STALENESS
+            ),
+        )
+        # The panel event subscription (the SSE task): a background
+        # task consumes the API service's transition-event stream and
+        # re-fires the four documented HA bus events.  It reuses the
+        # coordinator's client, so it only starts when that client
+        # actually offers a stream — an unconfigured-token stub (or a
+        # test snapshot client without ``stream_events``) leaves it
+        # unstarted, and the typed-error path already covers
+        # availability for those entries.
+        if callable(getattr(api_client, "stream_events", None)):
+            event_stream = NestQuestEventStream(hass, api_client)
+            event_stream.start()
+        runtime_data = NestQuestRuntimeData(
+            entry_id=entry.entry_id,
+            remove_update_listener=remove_update_listener,
+            coordinator=coordinator,
+            event_stream=event_stream,
+        )
+        # The runtime record is registered BEFORE the first refresh:
+        # the service proxy resolves the entry's runtime state through
+        # hass.data, and it must find the live coordinator there —
+        # never a half-set-up entry.  The platforms forward below reads
+        # the coordinator off the entry (the HA runtime-data contract);
+        # a forward failure below unwinds it through the except path.
+        hass.data[DOMAIN][entry.entry_id] = runtime_data
+        entry.runtime_data = runtime_data
+        # The first refresh polls the API snapshot; an API failure
+        # (unconfigured token, API service down) does NOT crash setup:
+        # the coordinator reports last_update_success=False, entities
+        # come up unavailable, and HA's standard retry cycle applies
+        # once the API is reachable.  HA's real
+        # ``async_config_entry_first_refresh`` wraps ANY failed update
+        # pass in ConfigEntryNotReady — the original error survives
+        # only as ``__cause__``, never as the raised exception — so the
+        # catch keys on ConfigEntryNotReady, NOT on the typed API
+        # error.  Everything else (a platform-forward failure,
+        # cancellation) still unwinds through the except block below.
+        try:
+            await coordinator.async_config_entry_first_refresh()
+        except ConfigEntryNotReady:
+            pass
+        await hass.config_entries.async_forward_entry_setups(entry, PLATFORMS)
     except BaseException:
-        await database.close()
+        # A failure anywhere after the listener was registered must not
+        # leak it (or the SSE task): unwind EVERYTHING acquired before
+        # the failure, keeping the original error as the one raised.
+        # Removal is best-effort — a failing step must not mask the
+        # setup error that triggered it.
+        if event_stream is not None:
+            try:
+                await event_stream.stop()
+            except BaseException:
+                pass
+        if remove_update_listener is not None:
+            try:
+                remove_update_listener()
+            except BaseException:
+                pass
+        # A coordinator created before the failure holds entity
+        # listeners pointed at the never-registered runtime — shut it
+        # down so no scheduled refresh outlives the failed setup.
+        if coordinator is not None:
+            try:
+                await coordinator.async_shutdown()
+            except BaseException:
+                pass
+        # A platform-forward failure reached this unwind AFTER
+        # runtime_data was assigned: clear it so no later unload path
+        # re-invokes the already-consumed update-listener remover
+        # through the stale record.
+        if getattr(entry, "runtime_data", None) is not None:
+            entry.runtime_data = None
+        # The runtime record was ALSO registered in hass.data before
+        # the first refresh: remove it here on ANY failure, or a later
+        # unload picks up the stale, already-torn-down record
+        # (hass.data wins over entry.runtime_data there) and
+        # re-invokes the already-consumed update-listener remover.
+        hass.data.get(DOMAIN, {}).pop(entry.entry_id, None)
         raise
-    runtime_data = NestQuestRuntimeData(
-        entry_id=entry.entry_id,
-        options=dict(entry.options),
-        database=database,
-        remove_update_listener=remove_update_listener,
-    )
-    entry.runtime_data = runtime_data
+    # The runtime record was already registered before the first
+    # refresh; re-assert the (unchanged) record so the return path
+    # stays readable as one registration site.
     hass.data[DOMAIN][entry.entry_id] = runtime_data
     return True
 
@@ -276,28 +221,63 @@ async def async_unload_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
     """Unload a config entry."""
     domain_data = hass.data.setdefault(DOMAIN, {})
     runtime_data = domain_data.pop(entry.entry_id, None)
-    if not domain_data:
+    is_last = not domain_data
+    if is_last:
         hass.data.pop(DOMAIN, None)
     if runtime_data is None:
         runtime_data = getattr(entry, "runtime_data", None)
+    # Platforms unload FIRST (mirroring HA conventions): entity
+    # listeners must not outlive the coordinator the teardown below
+    # shuts down.
+    platforms_unloaded = await hass.config_entries.async_unload_platforms(
+        entry, PLATFORMS
+    )
+    if platforms_unloaded is False and runtime_data is not None:
+        # Home Assistant KEPT one or more platforms loaded — their
+        # entities still live and must keep their coordinator.  Restore
+        # the runtime record popped above and report failure so HA
+        # retries the unload later instead of leaving live entities
+        # backed by a torn-down coordinator.
+        hass.data.setdefault(DOMAIN, {})[entry.entry_id] = runtime_data
+        return False
+    unload_error: BaseException | None = None
     if runtime_data is not None:
-        remove_update_listener = getattr(runtime_data, "remove_update_listener", None)
-        unload_error: BaseException | None = None
+        # The SSE subscription is stopped FIRST: its task must be gone
+        # (no frame can fire) before anything else is torn down.
+        event_stream = getattr(runtime_data, "event_stream", None)
+        if event_stream is not None:
+            stop_stream = getattr(event_stream, "stop", None)
+            if stop_stream is not None:
+                await stop_stream()
+        remove_update_listener = getattr(
+            runtime_data, "remove_update_listener", None
+        )
         try:
             if remove_update_listener is not None:
                 result = remove_update_listener()
                 if inspect.isawaitable(result):
                     await result
         except BaseException as err:
-            unload_error = err
+            # A failing remover must not skip the coordinator shutdown
+            # below; the first error is retained and re-raised only
+            # after the teardown ran.
+            if unload_error is None:
+                unload_error = err
         finally:
-            database = getattr(runtime_data, "database", None)
-            if database is not None:
-                await database.close()
-        if unload_error is not None:
-            if getattr(entry, "runtime_data", None) is not None:
-                entry.runtime_data = None
-            raise unload_error
+            # The coordinator's entity listeners must stop here: a
+            # scheduled refresh must never outlive the unload.
+            coordinator = getattr(runtime_data, "coordinator", None)
+            if coordinator is not None:
+                shutdown = getattr(coordinator, "async_shutdown", None)
+                if shutdown is not None:
+                    await shutdown()
+    # Domain-global services are torn down only once the FINAL entry
+    # unloads (``hass.data[DOMAIN]`` is now empty), never when a sibling
+    # entry is still loaded.
+    if is_last:
+        _deregister_services(hass)
     if getattr(entry, "runtime_data", None) is not None:
         entry.runtime_data = None
+    if unload_error is not None:
+        raise unload_error
     return True

custom_components/nestquest/api_client.py

@@ -0,0 +1,414 @@
+"""Panel-plane API client for the NestQuest integration (Feature 18).
+
+The integration talks to the NestQuest API service (Feature 16) over
+HTTP instead of reading the database: this module is the ONE place that
+speaks the API's panel plane — ``GET /api/v1/panel/snapshot`` (today's
+household snapshot) and ``POST /api/v1/panel/instances/{id}/complete``
+(completion as the tapped child profile) — authenticated with the
+static panel service token as a Bearer credential on every request.
+
+Transport-injected by construction: the constructor takes the base URL,
+the panel token, and the HTTP session to use.  The session speaks the
+aiohttp ``ClientSession`` surface (``request(method, url, headers=...,
+json=...)`` returning an async context manager whose response carries
+``status`` and ``await text()``), so tests stub the transport with NO
+network and NO aiohttp installed; production builds the client through
+:func:`client_from_entry`, which hands in Home Assistant's shared
+aiohttp session (``homeassistant.helpers.aiohttp_client
+.async_get_clientsession``).  The module itself imports NEITHER
+homeassistant NOR aiohttp at runtime (aiohttp appears only behind
+``TYPE_CHECKING`` for annotations), so the client is usable anywhere —
+the HA coupling lives in the one production factory.
+
+Every failure is typed: a transport failure (connection refused, DNS
+failure, timeout — the exchange never produced a response) and every
+non-2xx HTTP response raise :class:`NestQuestApiError`.  The error
+carries the HTTP status where there is one (so 401 and 404 are
+distinguishable at the call site) and ``None`` when there is not; the
+original transport error is chained as ``__cause__`` — nothing is
+swallowed.  There are NO retries and the client logs nothing: refresh
+cadence is the coordinator's concern (the next task), and the panel
+token is a secret that must never reach a log line or an error
+message — the error texts name the method, path, and status only.
+
+The panel plane's SSE event stream (``GET /api/v1/panel/events``) is
+exposed by :meth:`NestQuestApiClient.stream_events` — an async
+generator yielding ``(event_type, payload)`` per Server-Sent Events
+frame (``event: <type>`` / ``data: <json>`` lines separated by a blank
+line).  Opening the stream gets the same one-timeout, typed-error
+contract as every other call; reading it has NO body-wide timeout (a
+healthy stream is long-lived — the subscription manager owns
+reconnection and backoff).
+"""
+from __future__ import annotations
+
+import asyncio
+import inspect
+import json
+from collections.abc import AsyncIterator
+from typing import TYPE_CHECKING, Any
+from urllib.parse import urlparse
+
+from .const import (
+    CONF_API_BASE_URL,
+    CONF_PANEL_TOKEN,
+    DEFAULT_API_BASE_URL,
+    DEFAULT_PANEL_TOKEN,
+)
+
+if TYPE_CHECKING:
+    import aiohttp
+
+__all__ = [
+    "COMPLETE_INSTANCE_PATH",
+    "DEFAULT_TIMEOUT_SECONDS",
+    "EVENTS_PATH",
+    "NestQuestApiError",
+    "NestQuestApiClient",
+    "SNAPSHOT_PATH",
+    "client_from_entry",
+    "is_valid_base_url",
+    "resolve_api_config",
+]
+
+#: The panel plane's snapshot route (Feature 16).
+SNAPSHOT_PATH = "/api/v1/panel/snapshot"
+
+#: The panel plane's SSE event-stream route (Feature 16): each
+#: transition arrives as an ``event: <type>`` / ``data: <json>`` frame.
+EVENTS_PATH = "/api/v1/panel/events"
+
+#: The panel plane's completion route template (Feature 16); the
+#: ``{instance_id}`` placeholder is filled per call.
+COMPLETE_INSTANCE_PATH = "/api/v1/panel/instances/{instance_id}/complete"
+
+#: Request timeout, in seconds.  One attempt, one timeout: a hung API
+#: call surfaces as a typed error for the coordinator to report, never
+#: a retry loop.
+DEFAULT_TIMEOUT_SECONDS = 10.0
+
+
+class NestQuestApiError(Exception):
+    """A failed NestQuest API exchange, raised for every failure mode.
+
+    ``status`` carries the HTTP status when a response arrived (a
+    non-2xx response — 401 for a bad token, 404 for an unknown
+    instance) and is ``None`` when the exchange failed at the transport
+    level (connection refused, DNS failure, timeout) — so callers
+    distinguish the two with ``is_transport_error``.  The original
+    transport error, where there is one, is chained as ``__cause__``.
+    Messages carry the method, path, and status — never the request
+    headers, so the panel token can never leak through an error.
+    """
+
+    def __init__(self, message: str, *, status: int | None = None) -> None:
+        super().__init__(message)
+        self.status = status
+
+    @property
+    def is_transport_error(self) -> bool:
+        """True when the exchange failed before any response arrived."""
+        return self.status is None
+
+
+def is_valid_base_url(value: object) -> bool:
+    """Return True when ``value`` is a usable API base URL.
+
+    A full ``http://`` or ``https://`` URL with a host — the exact
+    shape the options flow validates (form ergonomics) and the client
+    constructor enforces (fail fast, never build requests against a
+    scheme-less or host-less string).
+    """
+    if not isinstance(value, str):
+        return False
+    candidate = value.strip()
+    if not candidate:
+        return False
+    parsed = urlparse(candidate)
+    return parsed.scheme in ("http", "https") and bool(parsed.netloc)
+
+
+def resolve_api_config(entry: Any) -> tuple[str, str]:
+    """Resolve ``(base_url, panel_token)`` off a config entry.
+
+    Precedence mirrors the options flow's stored-values resolution:
+    ``entry.options`` first (the live options-flow copy), then
+    ``entry.data`` (the config-flow-era copy), then the const defaults.
+    The token is a secret: callers must never log the returned pair.
+    """
+    options = getattr(entry, "options", None) or {}
+    data = getattr(entry, "data", None) or {}
+
+    def _pick(key: str, default: str) -> str:
+        if key in options:
+            return options[key]
+        if key in data:
+            return data[key]
+        return default
+
+    return (
+        _pick(CONF_API_BASE_URL, DEFAULT_API_BASE_URL),
+        _pick(CONF_PANEL_TOKEN, DEFAULT_PANEL_TOKEN),
+    )
+
+
+def client_from_entry(hass: Any, entry: Any) -> NestQuestApiClient:
+    """Build the production client for a config entry.
+
+    Reads the configured base URL and panel token off the entry
+    (:func:`resolve_api_config`) and hands the client Home Assistant's
+    SHARED aiohttp session (``homeassistant.helpers.aiohttp_client
+    .async_get_clientsession``) so panel calls ride HA's one connection
+    pool.  The helper import is deferred into this function on purpose:
+    the test harness is mock-only and the module must import (and the
+    client must be stub-transport testable) without homeassistant or
+    aiohttp installed.
+    """
+    from homeassistant.helpers.aiohttp_client import async_get_clientsession
+
+    base_url, panel_token = resolve_api_config(entry)
+    return NestQuestApiClient(
+        base_url, panel_token, async_get_clientsession(hass)
+    )
+
+
+class NestQuestApiClient:
+    """Async client for the NestQuest API service's panel plane.
+
+    ONE instance per config entry (the coordinator task wires it into
+    the refresh cycle).  The client is deliberately thin: it adds the
+    Bearer credential and the base URL, enforces one timeout per
+    request, and turns every failure into :class:`NestQuestApiError` —
+    no business logic, no retries, no caching.
+    """
+
+    def __init__(
+        self,
+        base_url: str,
+        panel_token: str,
+        session: aiohttp.ClientSession,
+        *,
+        timeout_seconds: float = DEFAULT_TIMEOUT_SECONDS,
+    ) -> None:
+        """Store the connection settings; the session is injected.
+
+        ``session`` is an aiohttp ``ClientSession`` in production and a
+        stub transport in tests.  ``base_url`` must be a full http(s)
+        URL and ``panel_token`` must be non-empty — a client built
+        without either can only fail later at request time with a
+        less-explicable error, so construction fails fast instead.
+        """
+        if not is_valid_base_url(base_url):
+            raise ValueError(
+                f"base_url must be a full http(s) URL, got {base_url!r}"
+            )
+        if not isinstance(panel_token, str) or not panel_token.strip():
+            raise ValueError("panel_token must be a non-empty string")
+        if (
+            not isinstance(timeout_seconds, (int, float))
+            or isinstance(timeout_seconds, bool)
+            or timeout_seconds <= 0
+        ):
+            raise ValueError(
+                f"timeout_seconds must be a positive number, got {timeout_seconds!r}"
+            )
+        self._base_url = base_url.strip().rstrip("/")
+        self._panel_token = panel_token
+        self._session = session
+        self._timeout_seconds = float(timeout_seconds)
+
+    async def get_snapshot(self) -> dict[str, Any]:
+        """Fetch and parse today's household snapshot.
+
+        Returns the JSON the snapshot route returns (``today_iso``,
+        ``cycle_day``, and the per-child list — see
+        ``api/routes_panel.py`` for the documented shape).  Raises
+        :class:`NestQuestApiError` on transport failure, timeout, or a
+        non-2xx response.
+        """
+        return await self._request_json("GET", SNAPSHOT_PATH)
+
+    async def complete_instance(
+        self, instance_id: int, actor_child_id: int
+    ) -> dict[str, Any]:
+        """Complete one quest instance as the tapped child profile.
+
+        POSTs ``{"actor_child_id": actor_child_id}`` to the complete
+        route and returns the parsed response body (the route answers
+        ``{"status": ...}`` both for a first completion and for an
+        idempotent repeat, so a retried panel tap succeeds).  Raises
+        :class:`NestQuestApiError` on transport failure, timeout, or a
+        non-2xx response — 401 for a wrong token, 404 for an unknown
+        instance.
+        """
+        path = COMPLETE_INSTANCE_PATH.format(instance_id=instance_id)
+        return await self._request_json(
+            "POST", path, json_body={"actor_child_id": actor_child_id}
+        )
+
+    async def stream_events(
+        self,
+    ) -> AsyncIterator[tuple[str, dict[str, Any]]]:
+        """Yield ``(event_type, payload)`` for every panel SSE frame.
+
+        Opens ``GET /api/v1/panel/events`` with the Bearer credential
+        and parses the Server-Sent Events framing the API service
+        emits: ``event: <type>`` and ``data: <json>`` lines closed by a
+        blank line (one frame per transition event; a frame's ``data``
+        may span several ``data:`` lines, joined with newlines — the
+        standard SSE rule).  Line splits across chunk boundaries are
+        buffered, so frames are parsed correctly whatever chunking the
+        transport produces.
+
+        Opening the stream carries the SAME one-timeout, typed-error
+        contract as every other call: a non-2xx response raises
+        :class:`NestQuestApiError` with its status and a transport
+        failure (connection refused, DNS, the open timing out) raises
+        one with ``status=None`` and the original error chained.  The
+        reading loop itself has NO timeout — a healthy stream is
+        long-lived — but any failure raised from the transport
+        mid-stream raises typed as well, so the consumer can reconnect.
+        A frame whose ``data`` is not valid JSON is a protocol failure
+        and raises typed, carrying the response status it arrived
+        with.  Cancellation is never converted: closing the generator
+        (``aclose``, i.e. the consumer's task being cancelled) stops
+        cleanly and closes the underlying response in every path.
+        """
+        url = f"{self._base_url}{EVENTS_PATH}"
+        headers = {"Authorization": f"Bearer {self._panel_token}"}
+        # Opening the response gets ONE request timeout, exactly like
+        # ``_request_json``; the read loop below runs WITHOUT one — a
+        # body-wide timeout would kill a healthy long-lived stream.
+        # The response context manager is entered manually (not via
+        # ``async with``) because the block must span the yields below;
+        # the ``finally`` closes it on EVERY exit path.
+        try:
+            async with asyncio.timeout(self._timeout_seconds):
+                stream_cm = self._session.request(
+                    "GET", url, headers=headers, json=None
+                )
+                response = await stream_cm.__aenter__()
+        except asyncio.CancelledError:
+            # Cancellation is never converted (see ``_request_json``).
+            raise
+        except NestQuestApiError:
+            raise
+        except Exception as err:
+            raise NestQuestApiError(
+                f"NestQuest API GET {EVENTS_PATH} transport failure: {err}",
+                status=None,
+            ) from err
+
+        status = response.status
+        if not 200 <= status < 300:
+            await self._close_stream(stream_cm)
+            raise NestQuestApiError(
+                f"NestQuest API GET {EVENTS_PATH} failed with HTTP {status}",
+                status=status,
+            )
+
+        try:
+            event_type: str | None = None
+            data_lines: list[str] = []
+            buffer = ""
+            async for chunk in response:
+                if isinstance(chunk, (bytes, bytearray)):
+                    chunk = chunk.decode("utf-8")
+                buffer += chunk
+                while "\n" in buffer:
+                    line, buffer = buffer.split("\n", 1)
+                    if line.startswith("event:"):
+                        event_type = line[len("event:"):].strip()
+                    elif line.startswith("data:"):
+                        data_lines.append(line[len("data:"):].strip())
+                    elif not line and event_type is not None:
+                        # A blank line ends the frame.  A trailing
+                        # incomplete frame (stream ends without its
+                        # closing blank line) is discarded, per the
+                        # SSE spec's treatment of incomplete events.
+                        try:
+                            payload = json.loads("\n".join(data_lines))
+                        except ValueError as err:
+                            raise NestQuestApiError(
+                                f"NestQuest API GET {EVENTS_PATH} "
+                                f"delivered a malformed SSE frame: {err}",
+                                status=status,
+                            ) from err
+                        yield event_type, payload
+                        event_type = None
+                        data_lines = []
+        except asyncio.CancelledError:
+            raise
+        except NestQuestApiError:
+            raise
+        except Exception as err:
+            raise NestQuestApiError(
+                f"NestQuest API GET {EVENTS_PATH} transport failure: {err}",
+                status=None,
+            ) from err
+        finally:
+            await self._close_stream(stream_cm)
+
+    @staticmethod
+    async def _close_stream(stream_cm: Any) -> None:
+        """Close an opened streaming response context manager.
+
+        Works for aiohttp's response context manager (whose
+        ``__aexit__`` is a coroutine) and for test stubs that return
+        either a coroutine or a plain value.
+        """
+        result = stream_cm.__aexit__(None, None, None)
+        if inspect.isawaitable(result):
+            await result
+
+    async def _request_json(
+        self,
+        method: str,
+        path: str,
+        *,
+        json_body: dict[str, Any] | None = None,
+    ) -> Any:
+        """Run ONE request and return the parsed JSON body.
+
+        The Bearer token rides the Authorization header only.  A
+        non-2xx response raises :class:`NestQuestApiError` with its
+        status; anything the transport raises (connection, timeout) is
+        wrapped as a transport-level :class:`NestQuestApiError` with
+        the original error chained — never swallowed, never retried.
+        A 2xx body that is not valid JSON is a protocol failure and
+        raises typed too, carrying the status it arrived with.
+        """
+        url = f"{self._base_url}{path}"
+        headers = {"Authorization": f"Bearer {self._panel_token}"}
+        try:
+            async with asyncio.timeout(self._timeout_seconds):
+                async with self._session.request(
+                    method, url, headers=headers, json=json_body
+                ) as response:
+                    status = response.status
+                    if not 200 <= status < 300:
+                        raise NestQuestApiError(
+                            f"NestQuest API {method} {path} failed with "
+                            f"HTTP {status}",
+                            status=status,
+                        )
+                    body_text = await response.text()
+        except asyncio.CancelledError:
+            # Cancellation is never converted: a shutting-down event
+            # loop must stop, not read a synthesized API error.
+            raise
+        except NestQuestApiError:
+            raise
+        except Exception as err:
+            raise NestQuestApiError(
+                f"NestQuest API {method} {path} transport failure: {err}",
+                status=None,
+            ) from err
+        try:
+            return json.loads(body_text)
+        except ValueError as err:
+            raise NestQuestApiError(
+                f"NestQuest API {method} {path} returned malformed "
+                f"JSON: {err}",
+                status=status,
+            ) from err

custom_components/nestquest/binary_sensor.py

@@ -0,0 +1,202 @@
+"""Per-child binary sensors (Feature 10, task 4).
+
+Two binary sensors per active child, both reading only the coordinator
+snapshot (the same ChildDaySnapshot the day sensors read):
+
+- ``binary_sensor.nestquest_<child>_all_done`` — ON exactly when the
+  child owes quests today (due today > 0) AND owes none of them any
+  more (remaining today == 0).  A zero-quest day is OFF: the
+  celebration automation must never fire on an empty day (the
+  day-complete event carries the same rule, Feature 10 task 7).
+- ``binary_sensor.nestquest_<child>_present_today`` — ON when the
+  presence engine resolves the child present on the HA-local date
+  (schedules and overrides, D-004 anchor-date arithmetic).
+
+Naming and registry identity follow the day sensors' contract: names
+slug to the documented entity_id shape; unique_ids are built from the
+child's database id, never the display name, so a rename never
+orphans an entity's history.
+"""
+from __future__ import annotations
+
+from collections.abc import Callable, Iterable
+from typing import Any
+
+from homeassistant.components.binary_sensor import BinarySensorEntity
+from homeassistant.config_entries import ConfigEntry
+from homeassistant.core import HomeAssistant
+from homeassistant.helpers.entity import DeviceInfo
+from homeassistant.helpers.update_coordinator import CoordinatorEntity
+
+from .const import DOMAIN
+from .coordinator import ChildDaySnapshot, NestQuestCoordinator
+
+
+class _NestQuestChildBinarySensor(CoordinatorEntity, BinarySensorEntity):
+    """Base for the per-child binary sensors.
+
+    Registry identity is built from the child's database id and never
+    changes; the displayed name and device label re-derive from the
+    child's CURRENT snapshot on every read, so a rename propagates on
+    the next refresh without orphaning history.  A child absent from
+    the latest snapshot (a deactivation; removal is a later task's
+    scope) yields ``None`` states rather than stale values.
+    """
+
+    _name_suffix: str = ""
+
+    def __init__(
+        self,
+        coordinator: NestQuestCoordinator,
+        child: ChildDaySnapshot,
+    ) -> None:
+        super().__init__(coordinator)
+        self._child_id = child.child_id
+        self._fallback_name = child.child_name
+
+    @property
+    def _child(self) -> ChildDaySnapshot | None:
+        """Return the child's current day snapshot, or None."""
+        data = self.coordinator.data
+        if data is None:
+            return None
+        for child in data.children:
+            if child.child_id == self._child_id:
+                return child
+        return None
+
+    def _displayed_child_name(self) -> str:
+        child = self._child
+        return child.child_name if child is not None else self._fallback_name
+
+    @property
+    def name(self) -> str | None:
+        return f"NestQuest {self._displayed_child_name()} {self._name_suffix}"
+
+    @property
+    def device_info(self) -> DeviceInfo:
+        return DeviceInfo(
+            identifiers={(DOMAIN, f"child_{self._child_id}")},
+            name=f"NestQuest {self._displayed_child_name()}",
+            manufacturer="NestQuest",
+        )
+
+    @property
+    def extra_state_attributes(self) -> dict[str, Any] | None:
+        child = self._child
+        if child is None:
+            return None
+        return {
+            "child_id": child.child_id,
+            "child_name": child.child_name,
+        }
+
+
+class NestQuestAllDoneSensor(_NestQuestChildBinarySensor):
+    """ON when the child had quests today and owes none of them."""
+
+    _name_suffix = "all done"
+
+    def __init__(
+        self,
+        coordinator: NestQuestCoordinator,
+        child: ChildDaySnapshot,
+    ) -> None:
+        super().__init__(coordinator, child)
+        self._attr_unique_id = f"{DOMAIN}_child_{child.child_id}_all_done"
+
+    @property
+    def is_on(self) -> bool | None:
+        child = self._child
+        if child is None:
+            return None
+        # Zero-quest days are OFF, not ON: an empty day must never fire
+        # the celebration automation.
+        return child.due_today > 0 and child.remaining_today == 0
+
+
+class NestQuestPresentTodaySensor(_NestQuestChildBinarySensor):
+    """ON when the child is at this house today (presence engine)."""
+
+    _name_suffix = "present today"
+
+    def __init__(
+        self,
+        coordinator: NestQuestCoordinator,
+        child: ChildDaySnapshot,
+    ) -> None:
+        super().__init__(coordinator, child)
+        self._attr_unique_id = f"{DOMAIN}_child_{child.child_id}_present_today"
+
+    @property
+    def is_on(self) -> bool | None:
+        child = self._child
+        if child is None:
+            return None
+        return child.present
+
+    @property
+    def extra_state_attributes(self) -> dict[str, Any] | None:
+        """Base attributes plus, for a child away today, the ISO date
+        of their next present day (the panel's away plate renders
+        ``Returns <weekday>, <Mon D>`` from it)."""
+        base = super().extra_state_attributes
+        if base is None:
+            return None
+        child = self._child
+        return {**base, "next_present": child.next_present if child else None}
+
+
+def _child_binary_sensors(
+    coordinator: NestQuestCoordinator, child: ChildDaySnapshot
+) -> tuple[_NestQuestChildBinarySensor, ...]:
+    """Build the two documented binary sensors for one active child."""
+    return (
+        NestQuestAllDoneSensor(coordinator, child),
+        NestQuestPresentTodaySensor(coordinator, child),
+    )
+
+
+async def async_setup_entry(
+    hass: HomeAssistant,
+    entry: ConfigEntry,
+    async_add_entities: Callable[..., None],
+) -> None:
+    """Create the two binary sensors per active child.
+
+    Entities are created for the snapshot's children at platform
+    setup; a coordinator listener adds sensors for children that first
+    appear on a later refresh (the day sensors' same pattern, so a new
+    child's whole entity set lands together).  Deactivated children
+    are NOT removed here — removal is a later task's scope.
+    """
+    coordinator = entry.runtime_data.coordinator
+    known_child_ids: set[int] = set()
+
+    def _add_new_children(children: Iterable[ChildDaySnapshot]) -> None:
+        new_children = [
+            child
+            for child in children
+            if child.child_id not in known_child_ids
+        ]
+        if not new_children:
+            return
+        known_child_ids.update(child.child_id for child in new_children)
+        async_add_entities(
+            [
+                sensor
+                for child in new_children
+                for sensor in _child_binary_sensors(coordinator, child)
+            ]
+        )
+
+    data = coordinator.data
+    if data is not None:
+        _add_new_children(data.children)
+
+    def _handle_coordinator_update() -> None:
+        data = coordinator.data
+        if data is not None:
+            _add_new_children(data.children)
+
+    coordinator.async_add_listener(_handle_coordinator_update)

custom_components/nestquest/blueprints/automation/afternoon_reminder.yaml

@@ -0,0 +1,90 @@
+blueprint:
+  name: NestQuest afternoon reminder
+  description: >-
+    Sends an afternoon nudge listing ONLY the children who still have
+    open quests today. Children who are present and all clear are
+    omitted (the nudge is for stragglers, not a roll call), children
+    who are not present today are omitted entirely, and the household
+    rollup sensors are excluded by the same present guard. When every
+    present child is already done the automation sends NOTHING at all:
+    a template condition stops the run before the notification. The
+    notify service is chosen by the household when importing this
+    blueprint — NestQuest never hard-codes a personal notify target.
+  domain: automation
+  input:
+    afternoon_time:
+      name: Afternoon time
+      description: Local time of day the reminder is sent.
+      default: "15:00"
+      selector:
+        time: {}
+    notify_target:
+      name: Notify service
+      description: >-
+        The Home Assistant notify service to call for the reminder,
+        for example notify.mobile_app_your_phone — a placeholder;
+        pick the notify service for your own device.
+      selector:
+        text: {}
+    send_reminder:
+      name: Send the reminder
+      description: >-
+        Turn off to keep the automation installed but skip the
+        notification entirely.
+      default: true
+      selector:
+        boolean: {}
+
+mode: single
+
+variables:
+  send_reminder: !input send_reminder
+
+triggers:
+  - trigger: time
+    at: !input afternoon_time
+
+conditions:
+  - condition: template
+    value_template: "{{ send_reminder | bool }}"
+  # Send nothing when every present child is already done: the guard is
+  # false unless at least one present child has remaining quests today.
+  - condition: template
+    value_template: |
+      {%- set ns = namespace(any_open=false) -%}
+      {%- for due in states.sensor
+            | selectattr('entity_id', 'search', '^sensor\\.nestquest_.*_quests_due_today(_\\d+)?$') -%}
+        {%- if due.attributes.get('present') -%}
+          {%- set remaining_values = states.sensor
+                | selectattr('entity_id', 'search', '^sensor\\.nestquest_.*_quests_remaining_today(_\\d+)?$')
+                | selectattr('attributes.child_id', 'eq', due.attributes.child_id)
+                | map(attribute='state')
+                | list -%}
+          {%- if remaining_values and (remaining_values | first | int) > 0 -%}
+            {%- set ns.any_open = true -%}
+          {%- endif -%}
+        {%- endif -%}
+      {%- endfor -%}
+      {{- ns.any_open -}}
+
+actions:
+  - action: !input notify_target
+    data:
+      title: NestQuest afternoon reminder
+      message: |
+        {%- set ns = namespace(lines=[]) -%}
+        {%- for due in states.sensor
+              | selectattr('entity_id', 'search', '^sensor\\.nestquest_.*_quests_due_today(_\\d+)?$') -%}
+          {%- if due.attributes.get('present') -%}
+            {%- set remaining_values = states.sensor
+                  | selectattr('entity_id', 'search', '^sensor\\.nestquest_.*_quests_remaining_today(_\\d+)?$')
+                  | selectattr('attributes.child_id', 'eq', due.attributes.child_id)
+                  | map(attribute='state')
+                  | list -%}
+            {%- if remaining_values and (remaining_values | first | int) > 0 -%}
+              {%- set line = due.attributes.child_name ~ ' still has ' ~ (remaining_values | first | int) ~ ' quest(s) open.' -%}
+              {%- set ns.lines = ns.lines + [line] -%}
+            {%- endif -%}
+          {%- endif -%}
+        {%- endfor -%}
+        {{- ns.lines | join('\n') -}}

custom_components/nestquest/blueprints/automation/day_complete_celebration.yaml

@@ -0,0 +1,109 @@
+blueprint:
+  name: NestQuest day complete celebration
+  description: >-
+    Celebrates the moment a child clears every quest for the day: the
+    automation is driven by the nestquest_child_day_complete event,
+    which NestQuest only fires when quests were owed and all of them
+    are complete — a zero-quest day can never trigger this
+    celebration. Once-per-child-per-day dedupe: point
+    last_celebrated_helper at ONE input_text helper (create it under
+    Settings, Devices and Services, Helpers — plain text). The
+    automation records each celebrated child as
+    "<child_id>:<today>" inside that helper, and a child who
+    un-completes a quest and completes it again the same day is
+    celebrated once, not twice — while a SECOND child clearing their
+    day the same date is still celebrated in full. The helper is
+    pruned to today's entries on every celebration, so it never
+    grows past one entry per child per day. A helper that does not
+    exist yet, or has never been set, lets the first celebration
+    through. The notification message may use the event payload's
+    child_name, quests_due and quests_completed. The notify service
+    is chosen by the household when importing this blueprint —
+    NestQuest never hard-codes a personal notify target.
+  domain: automation
+  input:
+    notify_target:
+      name: Notify service
+      description: >-
+        The Home Assistant notify service to call for the celebration,
+        for example notify.mobile_app_your_phone — a placeholder;
+        pick the notify service for your own device.
+      selector:
+        text: {}
+    celebration_message:
+      name: Celebration message
+      description: >-
+        The message sent when a child clears every quest today. May
+        use the event payload: trigger.event.data.child_name,
+        trigger.event.data.quests_due and trigger.event.data.quests_completed.
+      default: "Legendary! {{ trigger.event.data.child_name }} cleared every quest today!"
+      selector:
+        text: {}
+    celebrate:
+      name: Send the celebration
+      description: >-
+        Turn off to keep the automation installed but skip the
+        notification entirely.
+      default: true
+      selector:
+        boolean: {}
+    last_celebrated_helper:
+      name: Last-celebrated helper
+      description: >-
+        A single input_text helper remembering which children were
+        already celebrated today, as "<child_id>:<date>" entries
+        separated by commas. The automation skips a child whose entry
+        for today is already stored, and rewrites the helper with only
+        today's entries plus the new one after each celebration.
+      selector:
+        entity:
+          filter:
+            - domain: input_text
+
+mode: queued
+
+variables:
+  celebrate: !input celebrate
+  last_celebrated_helper: !input last_celebrated_helper
+
+triggers:
+  - trigger: event
+    event_type: nestquest_child_day_complete
+
+conditions:
+  - condition: template
+    value_template: "{{ celebrate | bool }}"
+  # Once-per-child-per-day dedupe: celebrate only when THIS child has
+  # no equal entry for today in the helper. Entries compare as whole
+  # comma-separated tokens — a substring check would wrongly suppress
+  # child 1 after child 11 was celebrated. An unset or missing helper
+  # reads as '' and celebrates.
+  - condition: template
+    value_template: >-
+      {{ (trigger.event.data.child_id ~ ':' ~ now().strftime('%Y-%m-%d'))
+         not in ((states(last_celebrated_helper) or '')
+                  .split(',')
+                  | select('ne', '')
+                  | list) }}
+
+actions:
+  - action: !input notify_target
+    data:
+      title: NestQuest day complete
+      message: !input celebration_message
+  # Record this child's celebration, keeping only today's entries so the
+  # helper never outgrows its text limit and stale entries cannot block
+  # next week's celebrations.
+  - action: input_text.set_value
+    target:
+      entity_id: !input last_celebrated_helper
+    data:
+      value: >-
+        {%- set today = now().strftime('%Y-%m-%d') -%}
+        {%- set ns = namespace(entries=[]) -%}
+        {%- for entry in (states(last_celebrated_helper) or '').split(',') -%}
+          {%- if entry and entry.endswith(':' ~ today) -%}
+            {%- set ns.entries = ns.entries + [entry] -%}
+          {%- endif -%}
+        {%- endfor -%}
+        {{ (ns.entries + [trigger.event.data.child_id ~ ':' ~ today]) | join(',') }}

custom_components/nestquest/blueprints/automation/end_of_day_report.yaml

@@ -0,0 +1,121 @@
+blueprint:
+  name: NestQuest end-of-day report
+  description: >-
+    Sends the parent an end-of-day report on how the day went. It runs
+    deliberately BEFORE NestQuest's midnight missed-quest sweep, so it
+    reads the same day's data (what is still open at report time, and
+    how much of the day was completed) rather than tomorrow-morning's
+    hindsight. Every PRESENT child gets a completion line, so the
+    parent always receives the day's summary; children who still owe
+    quests get their open count called out on that line, and children
+    who are not present today are omitted entirely. A child whose
+    remaining-count sensor is unavailable is reported with the
+    completion line only. By default the report is skipped when every
+    present child is already done — turn on send-even-when-clear to
+    always get the day's completion summary. The notify service is
+    chosen by the household when importing this blueprint — NestQuest
+    never hard-codes a personal notify target.
+  domain: automation
+  input:
+    report_time:
+      name: Report time
+      description: >-
+        Local time of day the report is sent — deliberately before the
+        midnight missed-quest sweep, so the report reads the same
+        day's data.
+      default: "20:00"
+      selector:
+        time: {}
+    notify_target:
+      name: Notify service
+      description: >-
+        The Home Assistant notify service to call for the report,
+        for example notify.mobile_app_your_phone — a placeholder;
+        pick the notify service for your own device.
+      selector:
+        text: {}
+    send_report:
+      name: Send the report
+      description: >-
+        Turn off to keep the automation installed but skip the
+        notification entirely.
+      default: true
+      selector:
+        boolean: {}
+    send_even_when_clear:
+      name: Send even when clear
+      description: >-
+        Send the report even when every present child has already
+        finished their quests today. When off (the default), an
+        all-clear day sends nothing.
+      default: false
+      selector:
+        boolean: {}
+
+mode: single
+
+variables:
+  send_report: !input send_report
+  send_even_when_clear: !input send_even_when_clear
+
+triggers:
+  - trigger: time
+    at: !input report_time
+
+conditions:
+  - condition: template
+    value_template: "{{ send_report | bool }}"
+  # Skip an all-clear day unless the household opted into
+  # send-even-when-clear: the guard is false only when every present
+  # child has a usable remaining count of zero. A MISSING or
+  # non-numeric remaining sensor reads as -1 and counts as open —
+  # a degraded state must reach the parent, not look like all-clear.
+  - condition: template
+    value_template: |
+      {%- set ns = namespace(any_open=false) -%}
+      {%- for due in states.sensor
+            | selectattr('entity_id', 'search', '^sensor\\.nestquest_.*_quests_due_today(_\\d+)?$') -%}
+        {%- if due.attributes.get('present') -%}
+          {%- set remaining_values = states.sensor
+                | selectattr('entity_id', 'search', '^sensor\\.nestquest_.*_quests_remaining_today(_\\d+)?$')
+                | selectattr('attributes.child_id', 'eq', due.attributes.child_id)
+                | map(attribute='state')
+                | list -%}
+          {%- if not remaining_values or (remaining_values | first | int(-1)) != 0 -%}
+            {%- set ns.any_open = true -%}
+          {%- endif -%}
+        {%- endif -%}
+      {%- endfor -%}
+      {{- send_even_when_clear | bool or ns.any_open -}}
+
+actions:
+  - action: !input notify_target
+    data:
+      title: NestQuest end-of-day report
+      message: |
+            {%- set ns = namespace(lines=[]) -%}
+            {%- for due in states.sensor
+                  | selectattr('entity_id', 'search', '^sensor\\.nestquest_.*_quests_due_today(_\\d+)?$') -%}
+              {%- if due.attributes.get('present') -%}
+                {%- set due_count = due.state | int -%}
+                {%- set completed_values = states.sensor
+                      | selectattr('entity_id', 'search', '^sensor\\.nestquest_.*_quests_completed_today(_\\d+)?$')
+                      | selectattr('attributes.child_id', 'eq', due.attributes.child_id)
+                      | map(attribute='state')
+                      | list -%}
+                {%- set remaining_values = states.sensor
+                      | selectattr('entity_id', 'search', '^sensor\\.nestquest_.*_quests_remaining_today(_\\d+)?$')
+                      | selectattr('attributes.child_id', 'eq', due.attributes.child_id)
+                      | map(attribute='state')
+                      | list -%}
+                {%- set completed_count = (completed_values | first | int) if completed_values else 0 -%}
+                {%- set remaining_count = (remaining_values | first | int) if remaining_values else none -%}
+                {%- if remaining_count is not none and remaining_count > 0 -%}
+                  {%- set line = due.attributes.child_name ~ ': ' ~ remaining_count ~ ' still open (' ~ completed_count ~ '/' ~ due_count ~ ' done).' -%}
+                {%- else -%}
+                  {%- set line = due.attributes.child_name ~ ': ' ~ completed_count ~ '/' ~ due_count ~ ' done.' -%}
+                {%- endif -%}
+                {%- set ns.lines = ns.lines + [line] -%}
+              {%- endif -%}
+            {%- endfor -%}
+            {{- ns.lines | join('\n') -}}

custom_components/nestquest/blueprints/automation/morning_summary.yaml

@@ -0,0 +1,78 @@
+blueprint:
+  name: NestQuest morning summary
+  description: >-
+    Sends a morning notification listing what each child still owes
+    today. Only children whose NestQuest presence sensor is on are
+    included; children who are not present today are omitted entirely.
+    The notify service is chosen by the household when importing this
+    blueprint — NestQuest never hard-codes a personal notify target.
+  domain: automation
+  input:
+    morning_time:
+      name: Morning time
+      description: Local time of day the summary is sent.
+      default: "08:00"
+      selector:
+        time: {}
+    notify_target:
+      name: Notify service
+      description: >-
+        The Home Assistant notify service to call for the summary,
+        for example notify.mobile_app_your_phone — a placeholder;
+        pick the notify service for your own device.
+      selector:
+        text: {}
+    send_summary:
+      name: Send the summary
+      description: >-
+        Turn off to keep the automation installed but skip the
+        notification entirely.
+      default: true
+      selector:
+        boolean: {}
+
+mode: single
+
+variables:
+  send_summary: !input send_summary
+
+triggers:
+  - trigger: time
+    at: !input morning_time
+
+conditions:
+  - condition: template
+    value_template: "{{ send_summary | bool }}"
+
+actions:
+  - action: !input notify_target
+    data:
+      title: NestQuest morning summary
+      message: |
+        {%- set ns = namespace(lines=[]) -%}
+        {%- for due in states.sensor
+              | selectattr('entity_id', 'search', '^sensor\\.nestquest_.*_quests_due_today(_\\d+)?$') -%}
+          {%- if due.attributes.get('present') -%}
+            {%- set remaining_values = states.sensor
+                  | selectattr('entity_id', 'search', '^sensor\\.nestquest_.*_quests_remaining_today(_\\d+)?$')
+                  | selectattr('attributes.child_id', 'eq', due.attributes.child_id)
+                  | map(attribute='state')
+                  | list -%}
+            {%- if remaining_values -%}
+              {%- set remaining = remaining_values | first | int -%}
+              {%- if remaining > 0 -%}
+                {%- set line = due.attributes.child_name ~ ' owes ' ~ remaining ~ ' quest(s) today.' -%}
+              {%- else -%}
+                {%- set line = due.attributes.child_name ~ ' is all clear today (0 quests remaining).' -%}
+              {%- endif -%}
+            {%- else -%}
+              {%- set line = due.attributes.child_name ~ "'s quest count is unavailable today." -%}
+            {%- endif -%}
+            {%- set ns.lines = ns.lines + [line] -%}
+          {%- endif -%}
+        {%- endfor -%}
+        {%- if ns.lines -%}
+          {{- ns.lines | join('\n') -}}
+        {%- else -%}
+          No children present today.
+        {%- endif -%}

custom_components/nestquest/config_flow.py

@@ -28,7 +28,14 @@ class NestQuestConfigFlow(config_entries.ConfigFlow, domain=DOMAIN):
     async def async_step_user(
         self, user_input: dict[str, Any] | None = None
     ) -> FlowResult:
-        """Handle the user step of the config flow."""
+        """Handle the user step of the config flow.
+
+        The integration needs no configuration to start (the API
+        connection is set in the options flow), so the user input is
+        stored as-is.  The former admin-allowlist copy is gone: with
+        the database removed the allowlist lives in the API service's
+        own store, not on the entry.
+        """
         await self.async_set_unique_id(DOMAIN, raise_on_progress=False)
         if self._async_in_progress() or self._async_current_entries():
             return self.async_abort(reason="single_instance_allowed")
@@ -36,4 +43,4 @@ class NestQuestConfigFlow(config_entries.ConfigFlow, domain=DOMAIN):
         if user_input is None:
             return self.async_show_form(step_id="user")
 
-        return self.async_create_entry(title="NestQuest", data=user_input)
+        return self.async_create_entry(title="NestQuest", data=dict(user_input))

custom_components/nestquest/const.py

@@ -1,47 +1,10 @@
-"""Constants for the NestQuest integration."""
+"""Re-export of :mod:`custom_components.nestquest.core.const` for the integration package.
+
+The canonical constants live in :mod:`custom_components.nestquest.core.const` (the storage layer
+extracted in task d0b691d8); this module re-exports them so existing
+``from .const import ...`` references inside the integration keep
+working without touching every import line.
+"""
 from __future__ import annotations
 
-import logging
-
-DOMAIN = "nestquest"
-LOGGER_NAME = "custom_components.nestquest"
-LOGGER = logging.getLogger(LOGGER_NAME)
-
-PLATFORMS: list[str] = []
-
-SQLITE_DB_FILENAME = "nestquest.db"
-
-# Configuration keys and default values
-CONF_HORIZON_DAYS = "horizon_days"
-DEFAULT_HORIZON_DAYS = 14
-
-CONF_DAY_ROLLOVER_TIME = "day_rollover_time"
-DEFAULT_DAY_ROLLOVER_TIME = "00:00"
-
-CONF_PANEL_IDLE_TIMEOUT = "panel_idle_timeout"
-DEFAULT_PANEL_IDLE_TIMEOUT = 300
-
-# Quest windows (D-008): a definition may declare several day windows;
-# each produces its own instance per day and groups the panel's Quest
-# Log into three columns.  The clock ranges are stored here so they stay
-# configurable later.  Boundaries: a window's end equals the next
-# window's start; classification (Feature 07 materialisation) treats a
-# due time exactly on the boundary as belonging to the LATER window, so
-# 12:00 is afternoon (not morning) and 17:00 is evening (not
-# afternoon).  Times after 21:00 belong to no window.
-WINDOW_MORNING = "morning"
-WINDOW_AFTERNOON = "afternoon"
-WINDOW_EVENING = "evening"
-
-QUEST_WINDOWS: tuple[str, ...] = (
-    WINDOW_MORNING,
-    WINDOW_AFTERNOON,
-    WINDOW_EVENING,
-)
-
-#: Inclusive "HH:MM" bounds per window, in 24-hour local time.
-WINDOW_CLOCK_RANGES: dict[str, tuple[str, str]] = {
-    WINDOW_MORNING: ("00:00", "11:59"),
-    WINDOW_AFTERNOON: ("12:00", "17:00"),
-    WINDOW_EVENING: ("17:00", "21:00"),
-}
+from .core.const import *  # noqa: F401,F403

custom_components/nestquest/coordinator.py

@@ -0,0 +1,386 @@
+"""The shared NestQuest DataUpdateCoordinator (Feature 10, Feature 18).
+
+ONE refresh pass builds the whole entity snapshot: active children,
+today's instances with their derived states (open / done / missed via
+:func:`~.completion.derive_state`), each child's presence today, and
+per-child rollup counts.  Every Feature 10 entity reads
+``coordinator.data`` — no entity queries the database itself, so one
+refresh updates the whole board coherently.
+
+Since Feature 18 the snapshot no longer comes from the local database:
+the coordinator polls the NestQuest API service's panel plane —
+``GET /api/v1/panel/snapshot`` through
+:class:`~.api_client.NestQuestApiClient` on its update interval — and
+RECONSTRUCTS the same core dataclasses the local builder produced
+(:class:`~.core.snapshot.NestQuestSnapshot`,
+:class:`~.core.snapshot.ChildDaySnapshot`,
+:class:`~.core.snapshot.QuestInstanceView`).  ``sensor.py`` and
+``binary_sensor.py`` read ``coordinator.data`` and
+:func:`~.core.snapshot.instance_payload` exactly as before, so every
+entity_id and attribute payload shape is unchanged: the panel cards and
+the four blueprints keep working untouched.
+
+One loss is deliberate and documented (D-009 revisited): the panel
+payload OMITS missed instances, so a snapshot rebuilt from the API can
+no longer carry them — ``admin_instances`` (``include_missed=True``)
+now equals ``instances`` (they can hold only open and completed rows).
+The admin surface for missed quests is the PWA, which reads the API
+service directly; the integration's entities never needed missed rows
+for their states or counts (the counts arrive precomputed).
+
+Failure handling: constructing the client fails fast (ValueError) when
+the entry has no panel token configured, and a fetch failure raises the
+typed :class:`~.api_client.NestQuestApiError`.  Neither crashes
+integration setup: the constructor logs a clear message and hands back
+a client-shaped stub whose refresh raises the same typed error, and
+``_async_update_data`` converts every typed error into
+:class:`~homeassistant.helpers.update_coordinator.UpdateFailed` — the
+exception a HA ``DataUpdateCoordinator`` records as a failed pass
+(``last_update_success = False``, ``data = None``), so the entities
+come up unavailable.  The typed error is never swallowed silently: it
+is logged with its message and chained into the UpdateFailed.  (The
+conversion matters at setup: HA's real
+``async_config_entry_first_refresh`` wraps any failed pass in
+``ConfigEntryNotReady``, so a setup that keys on the original
+exception type would never match it.)
+
+Last-good cache and staleness: every successful pass refreshes a cache
+of the rebuilt snapshot stamped with the :func:`time.monotonic`
+instant of the success.  A typed failure is checked against that stamp
+BEFORE the pass is declared failed: within the configured staleness
+threshold (``CONF_SNAPSHOT_STALENESS``, seconds, default three update
+intervals) the pass SUCCEEDS with the cached snapshot — the panel
+keeps rendering last-good data and the entities stay available — and
+the outage is logged as a warning.  Entities go unavailable only once
+the cache is older than the threshold (or before the first success);
+a later successful fetch refreshes the cache and the entities recover
+on their own, without a config-entry reload.
+"""
+from __future__ import annotations
+
+import asyncio
+import datetime
+import time
+from typing import Any
+
+from homeassistant.core import HomeAssistant
+from homeassistant.helpers.update_coordinator import (
+    DataUpdateCoordinator,
+    UpdateFailed,
+)
+
+from .api_client import NestQuestApiClient, NestQuestApiError, resolve_api_config
+from .const import (
+    CONF_UPDATE_INTERVAL,
+    DEFAULT_SNAPSHOT_STALENESS,
+    DEFAULT_UPDATE_INTERVAL,
+    DOMAIN,
+    LOGGER,
+    MIN_UPDATE_INTERVAL,
+)
+from .core.snapshot import (
+    ChildDaySnapshot,
+    NestQuestSnapshot,
+    QuestInstanceView,
+)
+
+__all__ = [
+    "ChildDaySnapshot",
+    "NestQuestCoordinator",
+    "NestQuestSnapshot",
+    "QuestInstanceView",
+]
+
+
+def snapshot_from_api_payload(payload: dict[str, Any]) -> NestQuestSnapshot:
+    """Reconstruct the core snapshot dataclasses from the API's JSON.
+
+    The panel snapshot route (``api/routes_panel.py``) returns today's
+    household as plain JSON — ``today_iso``, ``cycle_day``, and the
+    per-child list with precomputed counts and the instances in the
+    documented payload shape.  This function maps that shape BACK onto
+    the dataclasses ``sensor.py`` / ``binary_sensor.py`` read, field by
+    field:
+
+    - the API's ``state`` ``"completed"`` maps back to the core view's
+      ``"done"`` (so :func:`~.core.snapshot.instance_payload` renders
+      ``"completed"`` again — the round-trip is identity for open and
+      completed rows);
+    - ``overdue``, ``on_time`` (→ ``was_on_time``), ``completed_at``,
+      ``window``, ``due_time``, ``icon`` and the per-child counts pass
+      through verbatim;
+    - ``present`` and ``next_present`` pass through verbatim (the API
+      resolved them through the same presence engine server-side);
+    - the instance list is rebuilt IN ORDER, so the panel payload the
+      sensors emit matches the route's order byte for byte.
+
+    Because the route omits missed instances (D-009), a snapshot built
+    here cannot contain any ``missed`` view — see the module docstring.
+    """
+    children: list[ChildDaySnapshot] = []
+    for child in payload.get("children", []):
+        views = tuple(
+            QuestInstanceView(
+                instance_id=instance["id"],
+                definition_id=instance["definition_id"],
+                child_id=instance["child_id"],
+                title=instance["title"],
+                icon=instance.get("icon"),
+                window=instance["window"],
+                # The API payload does not carry due_date: every row
+                # is TODAY's instance (the route queries
+                # [today, today]), so the view's due_date is the
+                # snapshot's today_iso — the same value the local
+                # builder stamped on every today row.
+                due_date=payload["today_iso"],
+                due_time=instance.get("due_time"),
+                state=(
+                    "done" if instance["state"] == "completed" else
+                    instance["state"]
+                ),
+                overdue=instance["overdue"],
+                completed_at=instance.get("completed_at"),
+                was_on_time=instance.get("on_time"),
+            )
+            for instance in child.get("instances", [])
+        )
+        children.append(
+            ChildDaySnapshot(
+                child_id=child["child_id"],
+                child_name=child["child_name"],
+                instances=views,
+                present=child["present"],
+                due_today=child["due_today"],
+                completed_today=child["completed_today"],
+                remaining_today=child["remaining_today"],
+                completion_pct=child["completion_pct"],
+                next_present=child.get("next_present"),
+            )
+        )
+    return NestQuestSnapshot(
+        today_iso=payload["today_iso"],
+        children=tuple(children),
+        cycle_day=payload["cycle_day"],
+    )
+
+
+class _UnconfiguredApiClient:
+    """Client-shaped stand-in used when the entry has no panel token.
+
+    Constructing a real :class:`~.api_client.NestQuestApiClient` with an
+    empty token raises ValueError by design (fail fast on a client that
+    could only ever 401).  An entry that simply has not been configured
+    yet must not crash integration setup, so the coordinator swaps in
+    this stub: every refresh raises the SAME typed
+    :class:`~.api_client.NestQuestApiError` a transport failure would,
+    carrying a clear "API not configured" message;
+    :meth:`NestQuestCoordinator._async_update_data` converts it to
+    :class:`~homeassistant.helpers.update_coordinator.UpdateFailed`, so
+    the coordinator marks the entities unavailable and the HA standard
+    retry cycle applies.  The error is logged, never silent.
+    """
+
+    __slots__ = ()
+
+    async def get_snapshot(self) -> dict[str, Any]:
+        """Always raise: there is no configured API to fetch from."""
+        raise NestQuestApiError(
+            "NestQuest API not configured: set the panel token in the "
+            "integration options"
+        )
+
+
+def _monotonic() -> float:
+    """The monotonic clock the staleness math reads.
+
+    A one-line indirection over :func:`time.monotonic` so the staleness
+    tests can drive the clock deterministically (patch THIS function,
+    never the stdlib clock).  Monotonic is deliberate: wall-clock jumps
+    (NTP corrections, suspends) must not shorten or extend the window.
+    """
+    return time.monotonic()
+
+
+class NestQuestCoordinator(DataUpdateCoordinator):
+    """Shared refresh cycle for every NestQuest entity.
+
+    One refresh pass = one ``GET /api/v1/panel/snapshot`` through the
+    API client, reconstructed into the core snapshot dataclasses every
+    entity reads.  A failed pass (unconfigured API, transport failure,
+    non-2xx response) raises the typed error out of the client;
+    ``_async_update_data`` converts it to
+    :class:`~homeassistant.helpers.update_coordinator.UpdateFailed`, the
+    exception HA's coordinator machinery records as a failed pass: the
+    coordinator's ``data`` keeps its last good value while
+    ``last_update_success`` goes False — HA marks the entities
+    unavailable until a later pass succeeds.  An unexpected
+    non-typed error still propagates out of ``_async_update_data``
+    and is logged (with its traceback) by HA's machinery, the same way.
+
+    Forced refreshes (the service paths pushing an immediate update
+    after a completion) are SERIALIZED per entry: overlapping
+    complete/uncomplete calls must not interleave their snapshot
+    passes, or an older pass could publish a stale snapshot AFTER a
+    newer one and leave entities wrong until the next poll.  Real
+    HA's coordinator already serializes internally; the lock keeps
+    the same guarantee on the stand-in and costs nothing upstream.
+
+    Last-good cache: a successful pass stamps the rebuilt snapshot
+    with the :func:`~.coordinator._monotonic` instant of the success;
+    a typed failure within the configured staleness threshold
+    (``staleness_seconds``, from ``CONF_SNAPSHOT_STALENESS``) serves
+    that cached snapshot instead of failing the pass, so a short API
+    outage keeps the board up.  Past the threshold — or before the
+    first success — the pass fails as above, and a later successful
+    pass refreshes the cache and recovers the entities on its own.
+    """
+
+    def __init__(
+        self,
+        hass: HomeAssistant,
+        *,
+        entry_id: str,
+        api_client: NestQuestApiClient,
+        update_interval_seconds: int | None = None,
+        staleness_seconds: int | None = None,
+    ) -> None:
+        interval = update_interval_seconds
+        if (
+            not isinstance(interval, int)
+            or isinstance(interval, bool)
+            or interval < MIN_UPDATE_INTERVAL
+        ):
+            interval = DEFAULT_UPDATE_INTERVAL
+        staleness = staleness_seconds
+        if (
+            not isinstance(staleness, int)
+            or isinstance(staleness, bool)
+            or staleness < interval
+        ):
+            # A missing or nonsensical threshold falls back to the
+            # shipped default; a configured-but-too-short one (below
+            # even one poll interval) falls back to whichever of
+            # default/interval spans at least one failed poll, so the
+            # cache is never dead on arrival.  (The options flow
+            # validates the same rule at the form.)
+            staleness = max(DEFAULT_SNAPSHOT_STALENESS, interval)
+        super().__init__(
+            hass,
+            LOGGER,
+            name=DOMAIN,
+            update_interval=datetime.timedelta(seconds=interval),
+        )
+        self.entry_id = entry_id
+        self.api_client = api_client
+        self._refresh_lock = asyncio.Lock()
+        #: The configured last-good window, in SECONDS (const.py:
+        #: CONF_SNAPSHOT_STALENESS / DEFAULT_SNAPSHOT_STALENESS).
+        self._staleness_seconds = staleness
+        #: The last-good cache: the snapshot from the most recent
+        #: SUCCESSFUL fetch and the :func:`time.monotonic` instant it
+        #: landed.  Both stay None until the first success.
+        self._last_good_snapshot: NestQuestSnapshot | None = None
+        self._last_good_monotonic: float | None = None
+
+    async def async_refresh(self) -> None:
+        """One refresh at a time; a queued refresh runs AFTER the
+        in-flight one publishes, so the last snapshot always reflects
+        the latest mutation."""
+        async with self._refresh_lock:
+            await super().async_refresh()
+
+    async def _async_update_data(self) -> NestQuestSnapshot:
+        """One refresh pass: fetch the panel snapshot and rebuild it.
+
+        A successful pass rebuilds the snapshot and refreshes the
+        last-good cache (the snapshot plus the
+        :func:`time.monotonic` instant of the success).
+
+        A typed API failure (unconfigured token stub, transport
+        failure, non-2xx response) is first checked against that
+        stamp: WITHIN the configured staleness threshold (elapsed time
+        since the last successful fetch, inclusive of the threshold
+        itself) the pass SUCCEEDS with the cached snapshot — the panel
+        keeps rendering last-good data, the entities stay available —
+        and the outage is logged as a clear warning (never silent).
+        With no cache yet, or past the threshold, the typed error is
+        converted to
+        :class:`~homeassistant.helpers.update_coordinator.UpdateFailed`
+        — the exception HA's coordinator machinery records as a failed
+        pass (``last_update_success = False``, ``data`` unchanged) so
+        entities go unavailable and the setup-time first refresh
+        arrives as ``ConfigEntryNotReady`` — with the typed error
+        logged and chained.  Anything else still propagates.
+        """
+        try:
+            payload = await self.api_client.get_snapshot()
+        except NestQuestApiError as err:
+            now = _monotonic()
+            cached = self._last_good_snapshot
+            fetched_at = self._last_good_monotonic
+            if (
+                cached is not None
+                and fetched_at is not None
+                and now - fetched_at <= self._staleness_seconds
+            ):
+                LOGGER.warning(
+                    "NestQuest API refresh failed (%s); serving the "
+                    "last-good snapshot fetched %.0f s ago, within the "
+                    "%d s staleness threshold",
+                    err,
+                    now - fetched_at,
+                    self._staleness_seconds,
+                )
+                return cached
+            LOGGER.error(
+                "NestQuest coordinator refresh failed: %s", err
+            )
+            raise UpdateFailed(str(err)) from err
+        snapshot = snapshot_from_api_payload(payload)
+        self._last_good_snapshot = snapshot
+        self._last_good_monotonic = _monotonic()
+        return snapshot
+
+
+def coordinator_client_from_entry(
+    hass: HomeAssistant, entry: Any, *, session_factory: Any = None
+) -> Any:
+    """Build the refresh client for a config entry, tolerating no token.
+
+    Reads ``(base_url, panel_token)`` off the entry and constructs the
+    real client.  An entry with no panel token configured (the shipped
+    default is the empty string) makes the constructor raise ValueError
+    by design; integration setup must not crash on an unconfigured
+    entry, so this factory swaps in the typed-error stub instead and
+    logs ONE clear message.  The ValueError itself is never re-raised
+    past this point — it is converted, with the reason logged.
+
+    ``session_factory`` overrides where the HTTP session comes from
+    (production: HA's shared aiohttp session via
+    :func:`~.api_client.client_from_entry`); it exists so tests can
+    inject a stub transport without importing aiohttp — the mock-only
+    test harness has no ``homeassistant.helpers.aiohttp_client``.
+    """
+    base_url, panel_token = resolve_api_config(entry)
+    if not isinstance(panel_token, str) or not panel_token.strip():
+        LOGGER.warning(
+            "NestQuest API panel token is not configured for entry %s: "
+            "entities will stay unavailable until a token is set in the "
+            "integration options",
+            entry.entry_id,
+        )
+        return _UnconfiguredApiClient()
+    if session_factory is not None:
+        return NestQuestApiClient(
+            base_url, panel_token, session_factory(hass)
+        )
+    from custom_components.nestquest.api_client import client_from_entry
+
+    return client_from_entry(hass, entry)
+
+
+#: Test seam: entry_id → client, consulted by the conftest's client
+#: factory BEFORE the production path.  Always empty in production
+#: (nothing in the integration writes to it); tests register scripted
+#: clients through it and clear it between tests.
+_COORDINATOR_CLIENT_OVERRIDES: dict[str, Any] = {}

custom_components/nestquest/core/__init__.py

@@ -0,0 +1,11 @@
+"""NestQuest storage layer.
+
+A self-contained, Home-Assistant-free package holding the NestQuest
+SQLite storage layer: schema DDL, the versioned migration runner, the
+async connection wrapper, the path resolver, the domain constants and
+recurrence model, and the typed DAOs.  Nothing in this package imports
+``homeassistant``; the integration wires it into HA at its own layer
+(constructing :class:`custom_components.nestquest.core.db.NestQuestDatabase`
+with an executor adapter backed by ``hass.async_add_executor_job``).
+"""
+from __future__ import annotations

custom_components/nestquest/core/admin_allowlist.py

@@ -0,0 +1,153 @@
+"""Business layer for the admin allowlist (Feature 03).
+
+Sits between the options flow / Feature 09 service gate and the typed
+:class:`~.dao_children.AdminUsersDao`.  The allowlist stores Home
+Assistant user IDs — never usernames or display names (feature
+guardrail) — and an empty allowlist must fail closed: every function
+here refuses to write an empty allowlist, so the owner can never be
+accidentally locked out of admin operations by a bad save.
+
+Shape policy: a user id is a non-empty trimmed string.  Duplicate ids
+in one write are rejected up front — they would silently map to one
+row and hide a caller bug.  Writes replace the allowlist atomically:
+the diff (additions and removals) is computed and applied inside one
+transaction under the connection-scoped lock shared with the DAOs, so
+a concurrent reader never observes a half-applied sync.
+
+Seed policy (:func:`seed_setup_admin`): the allowlist is seeded only
+when it is EMPTY, so re-running setup never resurrects a deliberately
+narrowed list.  The setup user (the HA user who completed the config
+flow, via the entry context) is added automatically so the owner is
+never locked out on first setup; a stored entry-data copy of the list
+re-seeds a lost database.
+"""
+from __future__ import annotations
+
+import datetime
+import logging
+
+from .dao_children import AdminUsersDao, _connection_lock
+from .db import NestQuestDatabase
+
+LOGGER = logging.getLogger(__name__)
+
+
+def _now_stamp() -> str:
+    """UTC second-precision stamp, matching the registry's policy."""
+    return datetime.datetime.now(datetime.timezone.utc).isoformat(
+        timespec="seconds"
+    )
+
+
+def _validate_user_id(value: object) -> str:
+    """Return ``value`` trimmed; raise unless a non-empty string."""
+    if not isinstance(value, str):
+        raise ValueError(
+            f"admin user id must be a string, got {value!r}"
+        )
+    trimmed = value.strip()
+    if not trimmed:
+        raise ValueError("admin user id must not be empty")
+    return trimmed
+
+
+async def list_admin_ids(database: NestQuestDatabase) -> list[str]:
+    """Return the allowlisted HA user IDs in storage order."""
+    return [row.ha_user_id for row in await AdminUsersDao(database).list()]
+
+
+async def set_admin_ids(
+    database: NestQuestDatabase, user_ids: list[str]
+) -> None:
+    """Replace the allowlist with exactly ``user_ids`` (atomic sync).
+
+    Refuses an empty list — an empty allowlist must fail closed, and
+    the only way to reach one through this API would be removing the
+    last admin, so that removal is refused here with a clear error.
+    Refuses non-string, empty, or duplicate ids up front.  The diff
+    against the current allowlist (additions and removals) applies
+    inside one transaction under the connection lock.
+    """
+    if not isinstance(user_ids, list):
+        raise ValueError("user_ids must be a list of HA user id strings")
+    normalized: list[str] = []
+    for value in user_ids:
+        normalized.append(_validate_user_id(value))
+    if len(set(normalized)) != len(normalized):
+        raise ValueError("user_ids must not contain duplicates")
+    if not normalized:
+        raise ValueError(
+            "refusing to empty the admin allowlist: at least one admin "
+            "must remain (an empty allowlist fails closed)"
+        )
+    dao = AdminUsersDao(database)
+    async with _connection_lock(database):
+        async with database.transaction():
+            current = {row.ha_user_id for row in await dao.list()}
+            target = set(normalized)
+            for user_id in sorted(current - target):
+                await dao.remove(user_id)
+            for user_id in normalized:
+                await dao.add(user_id, _now_stamp())
+
+
+async def is_admin(
+    database: NestQuestDatabase, user_id: object
+) -> bool:
+    """Resolve an HA user ID against the allowlist — FAILS CLOSED.
+
+    True only for an allowlisted user id.  Everything else is False:
+    a non-allowlisted id, an unknown id, a None or non-string value
+    (a service call with no user context), and an empty allowlist
+    (nobody is admin rather than everybody).  The Feature 09 gate
+    wraps every admin-only service with this verdict; it never raises
+    for malformed input — malformed means not admin.
+    """
+    if not isinstance(user_id, str) or not user_id:
+        return False
+    return await AdminUsersDao(database).exists(user_id)
+
+
+async def seed_setup_admin(
+    database: NestQuestDatabase,
+    *,
+    stored_admin_ids: list[str] | None = None,
+    context_user_id: str | None = None,
+    owner_ids: list[str] | None = None,
+) -> list[str]:
+    """Seed an empty allowlist so the owner is never locked out.
+
+    Only acts when the allowlist is EMPTY.  Preference order: the
+    stored persisted copy of the list (the options flow's current
+    selection, then the config flow's original — disaster recovery for
+    a lost database), then the HA user who completed the config flow
+    (``context_user_id``), then — when no caller identity survived at
+    all — every Home Assistant OWNER account (``owner_ids``), so a
+    first setup whose flow context lost the user id still seeds a
+    working admin.  Returns the allowlist after seeding.  Non-empty
+    allowlists are returned untouched — re-running setup must never
+    resurrect a deliberately narrowed list.
+    """
+    dao = AdminUsersDao(database)
+    async with _connection_lock(database):
+        current = [row.ha_user_id for row in await dao.list()]
+        if current:
+            return current
+        candidates: list[str] = []
+        if stored_admin_ids is not None:
+            if not isinstance(stored_admin_ids, list):
+                raise ValueError(
+                    "stored_admin_ids must be a list of HA user id strings"
+                )
+            candidates = [_validate_user_id(value) for value in stored_admin_ids]
+        elif context_user_id is not None:
+            candidates = [_validate_user_id(context_user_id)]
+        elif owner_ids:
+            if not isinstance(owner_ids, list):
+                raise ValueError(
+                    "owner_ids must be a list of HA user id strings"
+                )
+            candidates = [_validate_user_id(value) for value in owner_ids]
+        for user_id in candidates:
+            await dao.add(user_id, _now_stamp())
+        return [row.ha_user_id for row in await dao.list()]

custom_components/nestquest/core/children.py

@@ -0,0 +1,280 @@
+"""Business layer for the children registry (Feature 03).
+
+Sits between the Feature 09 service gate and the typed
+:class:`~.dao_children.ChildrenDao`: callers get validation, name
+policies and the duplicate-name warning here, and never talk to the
+DAO or SQL directly.  Children are never hard-deleted — deactivation
+is a separate explicit operation (:func:`set_child_active`), so
+completion history keeps its references (feature guardrail).
+
+Name policy: the display name is required and trimmed; an empty or
+whitespace-only name is rejected with ValueError.  A duplicate display
+name is ALLOWED (two children may legitimately share a nickname) but
+logged as a warning so an accidental double-add is visible in the HA
+log.  The duplicate check is case-insensitive and whitespace-normalised
+on both sides, because "ada" and "Ada " are the same name to a parent.
+
+Colour and avatar are optional free-form strings, trimmed when present;
+``sort_order`` is an int with the DAO/schema default of 0.  Clearing an
+optional field back to NULL is deliberately rejected: the DAO's update
+writes only provided fields (it cannot express NULL), so the business
+layer refuses an explicit ``None`` instead of silently ignoring it.
+Timestamps follow the module timestamp policy: the business layer
+stamps UTC ISO-8601 at second precision so every row it creates is
+uniform.
+"""
+from __future__ import annotations
+
+import datetime
+import logging
+
+from .dao_children import ChildRecord, ChildrenDao, _connection_lock
+from .db import NestQuestDatabase
+
+LOGGER = logging.getLogger(__name__)
+
+#: Sentinel distinguishing "argument omitted" from "explicit SQL NULL"
+#: in :func:`edit_child`.
+_UNSET = object()
+
+
+def _now_stamp() -> str:
+    """Return the module's strict UTC second-precision stamp."""
+    return datetime.datetime.now(datetime.timezone.utc).isoformat(
+        timespec="seconds"
+    )
+
+
+def _validate_text(
+    value: object, field: str, *, required: bool = False
+) -> str | None:
+    """Validate a free-text field and return it trimmed.
+
+    ``None`` raises when ``required`` and otherwise returns None.  A
+    non-string value is rejected; an empty result is rejected for
+    required fields (whitespace-only names are empty to a parent).
+    """
+    if value is None:
+        if required:
+            raise ValueError(f"{field} is required")
+        return None
+    if not isinstance(value, str):
+        raise ValueError(f"{field} must be a string, got {value!r}")
+    trimmed = value.strip()
+    if required and not trimmed:
+        raise ValueError(f"{field} is required")
+    return trimmed
+
+
+def _validate_sort_order(value: object) -> int:
+    """Reject non-int sort orders (bools included) before the DAO."""
+    if isinstance(value, bool) or not isinstance(value, int):
+        raise ValueError(f"sort_order must be an integer, got {value!r}")
+    return value
+
+
+def _validate_child_id(value: object) -> int:
+    """Reject non-int child ids (bools included) before any lookup.
+
+    SQLite binds Python bools as integers, so ``True`` would silently
+    address child 1 and a float would round — malformed service input
+    must never mutate the wrong profile.
+    """
+    if isinstance(value, bool) or not isinstance(value, int):
+        raise ValueError(f"child_id must be an integer, got {value!r}")
+    return value
+
+
+async def _warn_on_duplicate_name(
+    database: NestQuestDatabase,
+    display_name: str,
+    *,
+    exclude_child_id: int | None = None,
+) -> None:
+    """Log a warning when ``display_name`` duplicates an existing child.
+
+    Case-insensitive and whitespace-normalised on both sides.  The
+    duplicate is still allowed — this only makes it visible; the log
+    line names both rows so an accidental double-add can be found.
+    ``exclude_child_id`` removes the child being edited from the scan,
+    so an edit only warns when the result collides with a DIFFERENT
+    child's name — including case-only edits, where the self-comparison
+    would otherwise hide a real duplicate.
+    """
+    lowered = display_name.casefold()
+    for child in await ChildrenDao(database).list_all():
+        if exclude_child_id is not None and child.id == exclude_child_id:
+            continue
+        if child.display_name.strip().casefold() == lowered:
+            LOGGER.warning(
+                "Child display name %r duplicates existing child %d "
+                "(%r); allowed, but check this was intentional",
+                display_name,
+                child.id,
+                child.display_name,
+            )
+            return
+
+
+async def create_child(
+    database: NestQuestDatabase,
+    display_name: str,
+    *,
+    colour: str | None = None,
+    avatar_ref: str | None = None,
+    sort_order: int = 0,
+) -> ChildRecord:
+    """Create a child profile and return the stored record.
+
+    The display name is required, trimmed, and rejected when empty.
+    A duplicate display name (case-insensitive) is allowed but logged
+    as a warning.  The scan and the INSERT run inside the
+    connection-scoped lock shared with the DAOs, so a concurrent
+    create of the same normalised name queues behind the first insert
+    and sees it — the duplicate still warns; it can never slip through
+    unlogged.
+    """
+    name = _validate_text(display_name, "display_name", required=True)
+    assert name is not None
+    colour_value = _validate_text(colour, "colour")
+    avatar_value = _validate_text(avatar_ref, "avatar_ref")
+    order = _validate_sort_order(sort_order)
+    async with _connection_lock(database):
+        await _warn_on_duplicate_name(database, name)
+        created = await ChildrenDao(database).create(
+            name,
+            _now_stamp(),
+            colour=colour_value,
+            avatar_ref=avatar_value,
+            sort_order=order,
+        )
+    return created
+
+
+async def edit_child(
+    database: NestQuestDatabase,
+    child_id: int,
+    *,
+    display_name: str | object = _UNSET,
+    colour: str | None | object = _UNSET,
+    avatar_ref: str | None | object = _UNSET,
+    sort_order: int | object = _UNSET,
+) -> ChildRecord:
+    """Edit a child profile and return the updated record.
+
+    Arguments default to the module sentinel ``_UNSET`` meaning "leave
+    this field alone".  An explicitly passed ``None`` for an optional
+    field raises: the DAO's update writes only provided fields and
+    cannot express NULL, so a silent no-op would mask the caller's
+    intent (see the module docstring).  A provided display name is
+    validated like create's; the duplicate scan excludes only the child
+    being edited, so a case-only edit colliding with another child's
+    normalised name still warns.  Raises ValueError when the child does
+    not exist.
+
+    Atomicity: the existence check, the duplicate scan, the UPDATE and
+    the readback all run inside the connection-scoped lock shared with
+    the DAOs, so another edit cannot slip between this call's UPDATE
+    and its readback — the returned record is exactly the one this
+    edit produced, not a later writer's.
+    """
+    _validate_child_id(child_id)
+    async with _connection_lock(database):
+        dao = ChildrenDao(database)
+        existing = await dao.get(child_id)
+        if existing is None:
+            raise ValueError(f"child {child_id} does not exist")
+        updates: dict[str, object] = {}
+        if display_name is not _UNSET:
+            name = _validate_text(
+                display_name, "display_name", required=True
+            )
+            assert name is not None
+            await _warn_on_duplicate_name(
+                database, name, exclude_child_id=child_id
+            )
+            updates["display_name"] = name
+        if colour is not _UNSET:
+            value = _validate_text(colour, "colour")
+            if value is None:
+                raise ValueError(
+                    "clearing colour is not supported; pass a replacement "
+                    "value or omit the field"
+                )
+            updates["colour"] = value
+        if avatar_ref is not _UNSET:
+            value = _validate_text(avatar_ref, "avatar_ref")
+            if value is None:
+                raise ValueError(
+                    "clearing avatar_ref is not supported; pass a "
+                    "replacement value or omit the field"
+                )
+            updates["avatar_ref"] = value
+        if sort_order is not _UNSET:
+            updates["sort_order"] = _validate_sort_order(sort_order)
+        if updates:
+            await dao.update(child_id, **updates)
+        edited = await dao.get(child_id)
+    assert edited is not None
+    return edited
+
+
+async def set_child_active(
+    database: NestQuestDatabase, child_id: int, is_active: bool
+) -> ChildRecord:
+    """Deactivate or reactivate a child; returns the updated record.
+
+    Deactivation hides the child from the panel without deleting their
+    history (feature guardrail); this is the only removal path.
+    ``is_active`` must be a real bool: the DAO's ``int()`` would
+    otherwise silently coerce strings and numerics ("1", 0) into a
+    state the caller never asked for.  Raises ValueError when the
+    child does not exist.
+
+    Atomicity: existence check, UPDATE and readback run inside the
+    connection-scoped lock, so a concurrent opposite transition cannot
+    make this call report the other caller's value.
+    """
+    _validate_child_id(child_id)
+    async with _connection_lock(database):
+        dao = ChildrenDao(database)
+        if await dao.get(child_id) is None:
+            raise ValueError(f"child {child_id} does not exist")
+        if not isinstance(is_active, bool):
+            raise ValueError(
+                f"is_active must be a real bool, got {is_active!r}"
+            )
+        await dao.set_active(child_id, is_active)
+        updated = await dao.get(child_id)
+    assert updated is not None
+    return updated
+
+
+async def reorder_children(
+    database: NestQuestDatabase, ordered_ids: list[int]
+) -> None:
+    """Rewrite the children's panel display order in one transaction.
+
+    ``ordered_ids`` must be a complete permutation of the children
+    table — every child id exactly once.  A partial list (missing an
+    existing child), an unknown id, or a duplicate is rejected with
+    ValueError before any write, so the current order survives a
+    rejected call.  The DAO enforces this inside its own transaction
+    (check and write are     atomic under the connection lock); this
+    wrapper additionally rejects non-integer ids up front, since
+    ``bool`` and floats would silently compare against stored integer
+    ids at the SQL layer.
+    """
+    for child_id in ordered_ids:
+        _validate_child_id(child_id)
+    await ChildrenDao(database).reorder(ordered_ids)
+
+
+async def list_children(
+    database: NestQuestDatabase, *, active_only: bool = False
+) -> list[ChildRecord]:
+    """Return children in display order (sort_order, then id)."""
+    dao = ChildrenDao(database)
+    if active_only:
+        return await dao.list_active()
+    return await dao.list_all()

custom_components/nestquest/core/completion.py

@@ -0,0 +1,549 @@
+"""Business layer for the completion event log (Feature 08).
+
+Sits between the Feature 09 service gate and the typed
+:class:`~.dao_instances.CompletionEventsDao`: callers get actor-shape
+validation and the UTC occurred-at stamp here, and never talk to the
+DAO or SQL directly.  This module is the only Feature-08 caller of
+:meth:`~.dao_instances.CompletionEventsDao.append`.  Completing an
+instance (no-op if already done) is :func:`complete_instance`;
+un-completing (no-op if already open) is :func:`uncomplete_instance`.
+Instance current state is derived from the latest event via
+:func:`instance_state` (``open`` / ``done`` / ``missed``); there is
+no status column.  ``missed`` is derived for past-due open instances
+(``due_date`` before HA-local ``today``) and is never stored as an
+event_type.
+
+Actor policy matches the schema CHECKs (D-008): ``actor_source`` is
+``'user'`` or ``'panel'`` only — never ``'service'``.  ``'user'``
+requires ``actor_user_id`` and forbids ``actor_child_id``; ``'panel'``
+requires ``actor_child_id`` (the tapped profile) and forbids
+``actor_user_id``.  Inverted shapes raise a field-naming ValueError
+before any write.
+
+``occurred_at`` is stamped UTC ISO-8601 at second precision with an
+explicit ``+00:00`` offset, matching the DAO's one accepted shape so
+lexicographic range queries stay exact.  ``was_on_time`` is required
+(True/False) for completed events; un-completions may pass None.  There
+is no permission check here (that is Feature 09).
+"""
+from __future__ import annotations
+
+import asyncio
+import datetime
+
+from .dao_children import _CONNECTION_LOCKS, _connection_lock
+from .dao_instances import (
+    EVENT_COMPLETED,
+    EVENT_UNCOMPLETED,
+    CompletionEventRecord,
+    CompletionEventsDao,
+    QuestInstanceRecord,
+    QuestInstancesDao,
+)
+from .db import NestQuestDatabase
+
+#: Timestamp policy for completion_events.occurred_at: strict UTC
+#: ISO-8601 with explicit '+00:00' offset (module timestamp policy).
+_UTC_TIMESTAMP_FORMAT = "%Y-%m-%dT%H:%M:%S+00:00"
+
+
+def _now_stamp() -> str:
+    """Return the module's strict UTC second-precision stamp."""
+    return datetime.datetime.now(datetime.timezone.utc).strftime(
+        _UTC_TIMESTAMP_FORMAT
+    )
+
+
+def _stamp_occurred_at(now: datetime.datetime | None) -> str:
+    """Return a DAO-accepted UTC stamp for ``now``, or the current time."""
+    if now is None:
+        return _now_stamp()
+    if not isinstance(now, datetime.datetime):
+        raise ValueError(f"now must be a datetime, got {now!r}")
+    if now.tzinfo is None:
+        raise ValueError("now must be timezone-aware")
+    return now.astimezone(datetime.timezone.utc).strftime(
+        _UTC_TIMESTAMP_FORMAT
+    )
+
+
+def _completion_moment(
+    now: datetime.datetime | None,
+    today: datetime.date | None,
+) -> tuple[datetime.date, datetime.time | None]:
+    """Return the HA-local completion date and optional wall-clock time.
+
+    ``today`` is the HA-local calendar date when threaded (Feature 07
+    style).  ``now`` is a timezone-aware HA-local datetime; its wall
+    clock is used as-is and is never converted to UTC.  When ``today``
+    is omitted the date comes from ``now``.  When both are omitted the
+    host calendar date is the Feature 07 fallback — never the UTC
+    clock.  Time-of-day is None unless ``now`` is supplied; comparing
+    against ``due_time`` requires ``now``.
+    """
+    if now is not None:
+        if not isinstance(now, datetime.datetime):
+            raise ValueError(f"now must be a datetime, got {now!r}")
+        if now.tzinfo is None:
+            raise ValueError("now must be timezone-aware")
+    if today is not None:
+        completion_date = today
+    elif now is not None:
+        completion_date = now.date()
+    else:
+        completion_date = datetime.date.today()
+    if now is None:
+        return completion_date, None
+    return completion_date, now.time()
+
+
+def _resolve_today(today: datetime.date | None) -> datetime.date:
+    """Return the threaded HA-local date, or the host calendar date."""
+    if today is None:
+        return datetime.date.today()
+    return today
+
+
+def _derived_state(
+    instance: QuestInstanceRecord,
+    latest: CompletionEventRecord | None,
+    today: datetime.date,
+) -> str:
+    """Return ``open``, ``done``, or ``missed`` from event plus due date.
+
+    A latest completed event is ``done`` even when past due.  No events
+    or a latest uncompleted event is ``open``, or ``missed`` when
+    ``due_date`` is before ``today``.  ``missed`` is never an event_type.
+    """
+    if latest is None or latest.event_type == EVENT_UNCOMPLETED:
+        due_date = datetime.date.fromisoformat(instance.due_date)
+        if due_date < today:
+            return "missed"
+        return "open"
+    if latest.event_type == EVENT_COMPLETED:
+        return "done"
+    raise ValueError(
+        f"event_type must be '{EVENT_COMPLETED}' or "
+        f"'{EVENT_UNCOMPLETED}', got {latest.event_type!r}"
+    )
+
+
+def derive_state(
+    instance: QuestInstanceRecord,
+    latest: CompletionEventRecord | None,
+    today: datetime.date,
+) -> str:
+    """Public state derivation for the Feature 10 coordinator.
+
+    Thin wrapper over :func:`_derived_state`: ``open``, ``done``, or
+    ``missed`` from the latest event plus the due date (``missed`` is
+    derived, never an event_type).  ``today`` is the caller-resolved
+    HA-local date.
+    """
+    return _derived_state(instance, latest, today)
+
+
+def _was_on_time(
+    instance: QuestInstanceRecord,
+    now: datetime.datetime | None,
+    today: datetime.date | None,
+) -> bool:
+    """Return whether the completion moment is on time for ``instance``.
+
+    On ``due_date`` before ``due_time`` is on time; on ``due_date``
+    after ``due_time``, or any later date, is late.  With no
+    ``due_time``, on time if the completion date equals ``due_date``
+    (or is earlier); late if after ``due_date``.  Same-day
+    ``due_time`` comparison requires ``now``; UTC time-of-day is never
+    substituted.
+    """
+    completion_date, completion_time = _completion_moment(now, today)
+    due_date = datetime.date.fromisoformat(instance.due_date)
+    if completion_date < due_date:
+        return True
+    if completion_date > due_date:
+        return False
+    if instance.due_time is None:
+        return True
+    if completion_time is None:
+        raise ValueError("now is required to compare due_time")
+    due_time = datetime.datetime.strptime(instance.due_time, "%H:%M").time()
+    return completion_time <= due_time
+
+
+class _TaskReentrantLock:
+    """Shared connection lock the owning task may re-enter."""
+
+    def __init__(self, inner: asyncio.Lock) -> None:
+        self._inner = inner
+        self._task: asyncio.Task | None = None
+        self._depth = 0
+
+    def locked(self) -> bool:
+        return self._inner.locked()
+
+    async def acquire(self) -> bool:
+        task = asyncio.current_task()
+        if self._task is task:
+            self._depth += 1
+            return True
+        await self._inner.acquire()
+        self._task = task
+        self._depth = 1
+        return True
+
+    def release(self) -> None:
+        if self._task is not asyncio.current_task():
+            raise RuntimeError("lock released by a non-owner")
+        self._depth -= 1
+        if self._depth == 0:
+            self._task = None
+            self._inner.release()
+
+    async def __aenter__(self) -> _TaskReentrantLock:
+        await self.acquire()
+        return self
+
+    async def __aexit__(self, *exc: object) -> None:
+        self.release()
+
+
+def _reentrant_connection_lock(database) -> _TaskReentrantLock:
+    """Return the shared connection lock, made task-reentrant.
+
+    ``CompletionEventsDao.append`` also acquires this lock, so
+    check+append in :func:`complete_instance` and
+    :func:`uncomplete_instance` must re-enter on the same task.  The
+    wrapper is stored in the shared dict so the DAO sees the same
+    object.
+    """
+    loop = asyncio.get_running_loop()
+    key = (id(database), id(loop))
+    lock = _CONNECTION_LOCKS.get(key)
+    if isinstance(lock, _TaskReentrantLock):
+        return lock
+    wrapped = _TaskReentrantLock(
+        lock if lock is not None else asyncio.Lock()
+    )
+    _CONNECTION_LOCKS[key] = wrapped
+    return wrapped
+
+
+def _validate_int_id(value: object, field: str) -> int:
+    """Reject non-int ids (bools included) before any lookup."""
+    if isinstance(value, bool) or not isinstance(value, int):
+        raise ValueError(f"{field} must be an integer, got {value!r}")
+    return value
+
+
+def _validate_event_type(value: object) -> str:
+    """Return a schema-legal event type, or raise naming the field."""
+    if value not in (EVENT_COMPLETED, EVENT_UNCOMPLETED):
+        raise ValueError(
+            f"event_type must be '{EVENT_COMPLETED}' or "
+            f"'{EVENT_UNCOMPLETED}', got {value!r}"
+        )
+    return value
+
+
+def _validate_actor(
+    actor_source: object,
+    actor_user_id: object,
+    actor_child_id: object,
+) -> tuple[str, str | None, int | None]:
+    """Return a schema-legal actor triple, or raise naming the field.
+
+    ``'user'`` requires a non-empty ``actor_user_id`` string and forbids
+    ``actor_child_id``.  ``'panel'`` requires an integer
+    ``actor_child_id`` and forbids ``actor_user_id``.  Any other
+    ``actor_source`` (including ``'service'``) is rejected.
+    """
+    if actor_source not in ("user", "panel"):
+        raise ValueError(
+            f"actor_source must be 'user' or 'panel', got {actor_source!r}"
+        )
+    if actor_source == "user":
+        if not isinstance(actor_user_id, str) or not actor_user_id.strip():
+            raise ValueError("actor_source 'user' requires actor_user_id")
+        if actor_child_id is not None:
+            raise ValueError(
+                "actor_source 'user' must not carry actor_child_id"
+            )
+        return "user", actor_user_id.strip(), None
+    if actor_user_id is not None:
+        raise ValueError("actor_source 'panel' must not carry actor_user_id")
+    if actor_child_id is None:
+        raise ValueError(
+            "actor_source 'panel' requires actor_child_id"
+        )
+    return (
+        "panel",
+        None,
+        _validate_int_id(actor_child_id, "actor_child_id"),
+    )
+
+
+def _validate_was_on_time(
+    event_type: str, was_on_time: object
+) -> bool | None:
+    """Return a real bool or None; completed events require True/False."""
+    if was_on_time is not None and type(was_on_time) is not bool:
+        raise ValueError(
+            f"was_on_time must be True, False or None, got {was_on_time!r}"
+        )
+    if event_type == EVENT_COMPLETED and was_on_time is None:
+        raise ValueError(
+            "a completed event requires was_on_time (True/False)"
+        )
+    return was_on_time
+
+
+async def append_event(
+    database: NestQuestDatabase,
+    instance_id: int,
+    child_id: int,
+    event_type: str,
+    *,
+    actor_source: str,
+    actor_user_id: str | None = None,
+    actor_child_id: int | None = None,
+    was_on_time: bool | None = None,
+    now: datetime.datetime | None = None,
+) -> CompletionEventRecord:
+    """Append one completion or un-completion event and return the row.
+
+    Validates actor shapes and the completed-event on-time requirement
+    before calling :meth:`CompletionEventsDao.append`.  ``occurred_at``
+    is stamped here (UTC ``+00:00``); pass ``now`` to pin the clock.
+    """
+    instance_id = _validate_int_id(instance_id, "instance_id")
+    child_id = _validate_int_id(child_id, "child_id")
+    event_type = _validate_event_type(event_type)
+    actor_source, actor_user_id, actor_child_id = _validate_actor(
+        actor_source, actor_user_id, actor_child_id
+    )
+    was_on_time = _validate_was_on_time(event_type, was_on_time)
+    occurred_at = _stamp_occurred_at(now)
+    return await CompletionEventsDao(database).append(
+        instance_id,
+        child_id,
+        event_type,
+        actor_source,
+        occurred_at,
+        was_on_time,
+        actor_user_id=actor_user_id,
+        actor_child_id=actor_child_id,
+    )
+
+
+async def instance_state(
+    database: NestQuestDatabase,
+    instance_id: int,
+    *,
+    today: datetime.date | None = None,
+) -> str:
+    """Return ``open``, ``done``, or ``missed`` from the latest event.
+
+    No events, or a latest event of uncompleted, is ``open`` unless
+    ``due_date`` is before ``today`` (HA-local, threaded), in which
+    case it is ``missed``.  A latest event of completed is ``done``
+    even when past due.  ``missed`` is never stored as an event_type.
+    Unknown ``instance_id`` raises ValueError naming the field.
+    Existence and the latest event are read inside the connection lock
+    so the answer is one snapshot.
+    """
+    instance_id = _validate_int_id(instance_id, "instance_id")
+    today_date = _resolve_today(today)
+    async with _connection_lock(database):
+        instance = await QuestInstancesDao(database).get_by_id(instance_id)
+        if instance is None:
+            raise ValueError(
+                f"instance_id: quest instance {instance_id} does not exist"
+            )
+        latest = await CompletionEventsDao(database).get_latest_for_instance(
+            instance_id
+        )
+    return _derived_state(instance, latest, today_date)
+
+
+class CompletionResult(str):
+    """The derived instance state, carrying the append verdict.
+
+    A ``str`` subclass so every existing ``result == "done"`` contract
+    keeps working; ``appended`` reports whether THIS call actually
+    appended an event (decided under the same lock as the append), so
+    a caller — the Feature 09 service path firing bus events —
+    announces a transition exactly once even under a concurrent
+    duplicate call where the loser's write is a no-op.  A completion
+    also carries the ``was_on_time`` verdict computed under that same
+    lock, so the event payload never re-reads mutable latest state a
+    racing reversal could have replaced.
+    """
+
+    appended: bool
+    was_on_time: bool | None
+
+    def __new__(
+        cls,
+        state: str,
+        *,
+        appended: bool,
+        was_on_time: bool | None = None,
+    ) -> "CompletionResult":
+        obj = super().__new__(cls, state)
+        obj.appended = appended
+        obj.was_on_time = was_on_time
+        return obj
+
+
+async def complete_instance(
+    database: NestQuestDatabase,
+    instance_id: int,
+    *,
+    actor_source: str,
+    actor_user_id: str | None = None,
+    actor_child_id: int | None = None,
+    now: datetime.datetime | None = None,
+    today: datetime.date | None = None,
+) -> CompletionResult:
+    """Append a completed event unless the instance is already done.
+
+    Returns the derived state ``done``; ``appended`` reports whether
+    THIS call appended (False on an already-done no-op).  Unknown
+    ``instance_id`` raises ValueError naming the field.  Existence,
+    latest-event, and the append run under one connection lock so a
+    concurrent complete cannot double-append.
+
+    ``was_on_time`` is computed from the HA-local completion moment
+    (threaded ``now`` / ``today``) against the instance ``due_date``
+    and optional ``due_time``.  ``now`` is the timezone-aware HA-local
+    datetime; its wall clock is never converted to UTC.  Same-day
+    ``due_time`` comparison requires ``now``.
+    """
+    instance_id = _validate_int_id(instance_id, "instance_id")
+    actor_source, actor_user_id, actor_child_id = _validate_actor(
+        actor_source, actor_user_id, actor_child_id
+    )
+    async with _reentrant_connection_lock(database):
+        instance = await QuestInstancesDao(database).get_by_id(instance_id)
+        if instance is None:
+            raise ValueError(
+                f"instance_id: quest instance {instance_id} does not exist"
+            )
+        latest = await CompletionEventsDao(database).get_latest_for_instance(
+            instance_id
+        )
+        if latest is not None and latest.event_type == EVENT_COMPLETED:
+            return CompletionResult("done", appended=False)
+        if latest is not None and latest.event_type != EVENT_UNCOMPLETED:
+            raise ValueError(
+                f"event_type must be '{EVENT_COMPLETED}' or "
+                f"'{EVENT_UNCOMPLETED}', got {latest.event_type!r}"
+            )
+        # Computed under the completion lock and carried on the result:
+        # the bus event must report THIS completion's timing, never a
+        # re-read of the latest event a racing reversal could replace.
+        on_time = _was_on_time(instance, now, today)
+        await append_event(
+            database,
+            instance.id,
+            instance.child_id,
+            EVENT_COMPLETED,
+            actor_source=actor_source,
+            actor_user_id=actor_user_id,
+            actor_child_id=actor_child_id,
+            was_on_time=on_time,
+            now=now,
+        )
+    return CompletionResult("done", appended=True, was_on_time=on_time)
+
+
+async def uncomplete_instance(
+    database: NestQuestDatabase,
+    instance_id: int,
+    *,
+    actor_source: str,
+    actor_user_id: str | None = None,
+    actor_child_id: int | None = None,
+    now: datetime.datetime | None = None,
+    today: datetime.date | None = None,
+) -> CompletionResult:
+    """Append an uncompleted event unless the instance is already open.
+
+    Returns the derived state ``open``, or ``missed`` when the instance
+    is past due (``due_date`` before HA-local ``today``); ``appended``
+    reports whether THIS call appended (False on an already-open
+    no-op).  Unknown ``instance_id`` raises ValueError naming the
+    field.  Existence, latest-event, and the append run under one
+    connection lock so a concurrent uncomplete cannot double-append.
+    The original completed row is not modified.
+    """
+    instance_id = _validate_int_id(instance_id, "instance_id")
+    actor_source, actor_user_id, actor_child_id = _validate_actor(
+        actor_source, actor_user_id, actor_child_id
+    )
+    today_date = _resolve_today(today)
+    async with _reentrant_connection_lock(database):
+        instance = await QuestInstancesDao(database).get_by_id(instance_id)
+        if instance is None:
+            raise ValueError(
+                f"instance_id: quest instance {instance_id} does not exist"
+            )
+        latest = await CompletionEventsDao(database).get_latest_for_instance(
+            instance_id
+        )
+        if latest is None or latest.event_type == EVENT_UNCOMPLETED:
+            return CompletionResult(
+                _derived_state(instance, latest, today_date),
+                appended=False,
+            )
+        if latest.event_type != EVENT_COMPLETED:
+            raise ValueError(
+                f"event_type must be '{EVENT_COMPLETED}' or "
+                f"'{EVENT_UNCOMPLETED}', got {latest.event_type!r}"
+            )
+        latest = await append_event(
+            database,
+            instance.id,
+            instance.child_id,
+            EVENT_UNCOMPLETED,
+            actor_source=actor_source,
+            actor_user_id=actor_user_id,
+            actor_child_id=actor_child_id,
+            was_on_time=None,
+            now=now,
+        )
+    return CompletionResult(
+        _derived_state(instance, latest, today_date), appended=True
+    )
+
+
+async def list_missed_for_child(
+    database: NestQuestDatabase,
+    child_id: int,
+    range_start: str,
+    range_end: str,
+    *,
+    today: datetime.date | None = None,
+) -> list[QuestInstanceRecord]:
+    """Return the child's missed instances due in the closed date range.
+
+    Missed means the latest event state is open and ``due_date`` is
+    before ``today`` (HA-local, threaded).  Uses
+    :meth:`QuestInstancesDao.list_by_date_range` plus derived state.
+    Never appends a missed event.  Instances and latest events are
+    read inside the connection lock so the list is one snapshot.
+    """
+    child_id = _validate_int_id(child_id, "child_id")
+    today_date = _resolve_today(today)
+    async with _connection_lock(database):
+        instances = await QuestInstancesDao(database).list_by_date_range(
+            child_id, range_start, range_end
+        )
+        events = CompletionEventsDao(database)
+        missed: list[QuestInstanceRecord] = []
+        for instance in instances:
+            latest = await events.get_latest_for_instance(instance.id)
+            if _derived_state(instance, latest, today_date) == "missed":
+                missed.append(instance)
+    return missed

custom_components/nestquest/core/const.py

@@ -0,0 +1,165 @@
+"""Constants for the NestQuest integration."""
+from __future__ import annotations
+
+import logging
+import re
+
+DOMAIN = "nestquest"
+LOGGER_NAME = "custom_components.nestquest"
+LOGGER = logging.getLogger(LOGGER_NAME)
+
+#: Strict 24-hour ``HH:MM`` pattern shared by the options flow and the
+#: settings object's time validation, so a stored option and a freshly
+#: validated form submit parse the same way.  Defined here (HA-free) so
+#: both the integration's options flow and the core settings module
+#: import ONE pattern instead of re-copying it.
+TIME_PATTERN = re.compile(r"(?:[01]\d|2[0-3]):[0-5]\d")
+
+# Platforms set up per config entry (Feature 10): the per-child day
+# sensors and binary sensors.
+PLATFORMS: list[str] = ["sensor", "binary_sensor"]
+
+# Home Assistant bus events (design/ENTITIES-AND-SERVICES.md §3).  The
+# panel and admin cards listen for these; since Feature 18 the
+# completed/uncompleted/day-complete transitions are published by the
+# API service on its SSE stream and re-fired on the bus by the
+# integration's subscription, and Feature 11's nightly sweep fires
+# quest_missed.
+EVENT_QUEST_COMPLETED = "nestquest_quest_completed"
+EVENT_QUEST_UNCOMPLETED = "nestquest_quest_uncompleted"
+EVENT_QUEST_MISSED = "nestquest_quest_missed"
+EVENT_CHILD_DAY_COMPLETE = "nestquest_child_day_complete"
+
+#: Canonical domain-global service name (design/ENTITIES-AND-SERVICES.md §2).
+#: Since Feature 18 only the panel completion service remains: the admin
+#: surface is the PWA and the API service's admin routes, so the former
+#: HA admin services (uncomplete, quest-definition and presence
+#: management, CSV export, child management, regenerate) are gone.
+SERVICE_COMPLETE_QUEST = "complete_quest"
+
+DOMAIN_SERVICES: tuple[str, ...] = (
+    SERVICE_COMPLETE_QUEST,
+)
+
+SQLITE_DB_FILENAME = "nestquest.db"
+
+# Zero-config panel dashboard (Feature 20): ONE storage-mode Lovelace
+# dashboard registered on setup whose config carries the bundle's
+# ``custom:nestquest-party`` strategy (frontend/src/strategy.ts) — the
+# views are generated at render time from the household roster.  The
+# url_path IS the domain: the stable key idempotency is keyed on (a
+# reload or a second entry never duplicates it, and a dashboard already
+# registered under it — ours or the user's — is left untouched).
+DASHBOARD_URL_PATH = DOMAIN
+DASHBOARD_TITLE = "NestQuest"
+DASHBOARD_ICON = "mdi:party-popper"
+DASHBOARD_STRATEGY_TYPE = "custom:nestquest-party"
+
+# Configuration keys and default values
+CONF_HORIZON_DAYS = "horizon_days"
+DEFAULT_HORIZON_DAYS = 14
+
+CONF_DAY_ROLLOVER_TIME = "day_rollover_time"
+DEFAULT_DAY_ROLLOVER_TIME = "00:00"
+
+CONF_PANEL_IDLE_TIMEOUT = "panel_idle_timeout"
+DEFAULT_PANEL_IDLE_TIMEOUT = 300
+
+# Admin allowlist (Feature 03): HA user IDs permitted to call admin-only
+# services.  Stored as IDs, never usernames (feature guardrail).  The
+# database allowlist is authoritative; the config entry carries the same
+# list as a disaster-recovery copy so a lost database can be re-seeded.
+CONF_ADMIN_USER_IDS = "admin_user_ids"
+
+# Shared coordinator refresh interval (Feature 10), in SECONDS.  Every
+# entity reads one snapshot per refresh; completions push an immediate
+# refresh so this poll is only the fallback cadence.
+CONF_UPDATE_INTERVAL = "update_interval"
+DEFAULT_UPDATE_INTERVAL = 300
+MIN_UPDATE_INTERVAL = 30
+
+# Last-good snapshot staleness (Feature 18), in SECONDS: how long the
+# coordinator keeps SERVING the last good snapshot after the API stops
+# answering.  A failed poll whose elapsed time since the last successful
+# fetch is within the threshold returns the cached snapshot (the panel
+# keeps rendering last-good data, entities stay available); past it the
+# poll fails the HA way and the entities go unavailable.  The default is
+# 3x the default update interval (900 s = 15 minutes): three consecutive
+# failed five-minute polls before the board is declared stale — enough
+# to ride out an API service restart, short enough not to render a
+# days-old board all day.  Validation floor: the threshold must be at
+# least the configured update interval, or the cache could never span
+# even one failed poll.
+CONF_SNAPSHOT_STALENESS = "snapshot_staleness"
+DEFAULT_SNAPSHOT_STALENESS = 3 * DEFAULT_UPDATE_INTERVAL
+
+# Notification automations (Feature 11).  The notify target is a free-text
+# Home Assistant service name (e.g. "notify.mobile_app_dads_phone") the
+# household fills in — never a hard-coded personal target; the times are
+# strict HH:MM local; each of the four automations has an independent
+# enable toggle.  Per the owner-settled resolution the end-of-day report
+# defaults to 20:00 — deliberately BEFORE the midnight missed sweep —
+# and never defaults to the rollover time.
+CONF_NOTIFY_TARGET = "notify_target"
+CONF_MORNING_SUMMARY_TIME = "morning_summary_time"
+DEFAULT_MORNING_SUMMARY_TIME = "08:00"
+CONF_AFTERNOON_REMINDER_TIME = "afternoon_reminder_time"
+DEFAULT_AFTERNOON_REMINDER_TIME = "15:00"
+CONF_END_OF_DAY_REPORT_TIME = "end_of_day_report_time"
+DEFAULT_END_OF_DAY_REPORT_TIME = "20:00"
+CONF_MORNING_SUMMARY_ENABLED = "morning_summary_enabled"
+CONF_AFTERNOON_REMINDER_ENABLED = "afternoon_reminder_enabled"
+CONF_END_OF_DAY_REPORT_ENABLED = "end_of_day_report_enabled"
+CONF_CELEBRATION_ENABLED = "celebration_enabled"
+DEFAULT_AUTOMATION_ENABLED = True
+
+# Panel-plane API client (Feature 18): the integration reaches the
+# NestQuest API service (Feature 16) over HTTP instead of the database.
+# The base URL points at the API service host serving ``/api/v1/panel/*``
+# (uvicorn's default host/port is the sensible starting point); the panel
+# service token is the static Bearer credential the panel plane requires
+# (``NESTQUEST_PANEL_TOKEN`` on the API side).  Both are stored on the
+# entry like every other setting — options first, then the entry-data
+# copy, then defaults.  The TOKEN IS A SECRET: it is never logged, never
+# echoed into error messages, and never committed.  The shipped default
+# token IS the empty string (DEFAULT_PANEL_TOKEN) — an entry with no
+# configured token is therefore NOT a working client: the options flow
+# accepts an empty token as "not configured yet" and only rejects
+# malformed (padded/whitespace-only/non-string) values — the actual
+# non-emptiness guard is enforced at client construction, where
+# NestQuestApiClient fails fast on an empty/whitespace token
+# (api_client.py).  So a caller building the client from a bare
+# entry must either ensure a token is configured first or handle the
+# construction ValueError and surface an "API not configured" state —
+# an unconfigured entry never yields a client that can only 401.
+# This mirrors the API service's fail-closed stance (api/config.py: no
+# default token exists).
+CONF_API_BASE_URL = "api_base_url"
+DEFAULT_API_BASE_URL = "http://127.0.0.1:8000"
+CONF_PANEL_TOKEN = "panel_token"
+DEFAULT_PANEL_TOKEN = ""
+
+# Quest windows (D-008): a definition may declare several day windows;
+# each produces its own instance per day and groups the panel's Quest
+# Log into three columns.  The clock ranges are stored here so they stay
+# configurable later.  Boundaries: a window's end equals the next
+# window's start; classification (Feature 07 materialisation) treats a
+# due time exactly on the boundary as belonging to the LATER window, so
+# 12:00 is afternoon (not morning) and 17:00 is evening (not
+# afternoon).  Times after 21:00 belong to no window.
+WINDOW_MORNING = "morning"
+WINDOW_AFTERNOON = "afternoon"
+WINDOW_EVENING = "evening"
+
+QUEST_WINDOWS: tuple[str, ...] = (
+    WINDOW_MORNING,
+    WINDOW_AFTERNOON,
+    WINDOW_EVENING,
+)
+
+#: Inclusive "HH:MM" bounds per window, in 24-hour local time.
+WINDOW_CLOCK_RANGES: dict[str, tuple[str, str]] = {
+    WINDOW_MORNING: ("00:00", "11:59"),
+    WINDOW_AFTERNOON: ("12:00", "17:00"),
+    WINDOW_EVENING: ("17:00", "21:00"),
+}

custom_components/nestquest/core/dao_children.py

@@ -191,13 +191,20 @@ class ChildrenDao:
     async def reorder(self, ordered_ids: list[int]) -> None:
         """Persist a new sort order: ``ordered_ids[i]`` gets sort_order i.
 
+        The list must be a COMPLETE permutation of the children table:
+        every existing child id appears exactly once.  Partial lists
+        (missing an existing child) and unknown ids (naming a child
+        that does not exist) are rejected with ValueError BEFORE any
+        write, leaving the current order untouched — a silent partial
+        reorder would leave unlisted children with stale positions and
+        hide a caller bug.  Duplicate ids are rejected up front: they
+        cannot all hold distinct positions, and silently assigning the
+        last occurrence's index would hide a caller bug.
+
         Runs inside one transaction; positions are staged at offset
         -len (all negative, so any permutation of the same ids never
         collides mid-reorder under the wrapper's single-connection
-        serialization), then finalized 0..n-1.  Duplicate ids are
-        rejected up front: they cannot all hold distinct positions, and
-        silently assigning the last occurrence's index would hide a
-        caller bug.
+        serialization), then finalized 0..n-1.
 
         Concurrent reorder() calls on one connection are serialized by
         a connection-scoped asyncio lock (shared across every ChildrenDao
@@ -205,10 +212,10 @@ class ChildrenDao:
         transaction() rejects a second concurrent transaction with
         RuntimeError, so racing callers would crash instead of
         queueing.  The lock makes the second call wait, then run
-        against the first call's final state.
+        against the first call's final state — which also keeps the
+        completeness check honest: the re-read of the table happens
+        inside the same lock and transaction as the writes.
         """
-        if not ordered_ids:
-            return
         if len(set(ordered_ids)) != len(ordered_ids):
             raise ValueError(
                 "reorder() received duplicate child ids; every id must "
@@ -216,6 +223,29 @@ class ChildrenDao:
             )
         async with _connection_lock(self._database):
             async with self._database.transaction():
+                rows = await self._database.fetch_all(
+                    f"SELECT id FROM children"
+                )
+                existing = {row[0] for row in rows}
+                listed = set(ordered_ids)
+                missing = sorted(existing - listed)
+                unknown = sorted(listed - existing)
+                if missing or unknown:
+                    details = []
+                    if missing:
+                        details.append(
+                            f"missing child ids {missing} (a partial "
+                            "reorder would leave them with stale "
+                            "positions)"
+                        )
+                    if unknown:
+                        details.append(
+                            f"unknown child ids {unknown}"
+                        )
+                    raise ValueError(
+                        "reorder() must list every child exactly once; "
+                        + "; ".join(details)
+                    )
                 offset = len(ordered_ids)
                 await self._database.execute_many(
                     "UPDATE children SET sort_order = ? WHERE id = ?",

custom_components/nestquest/core/dao_instances.py

@@ -15,13 +15,13 @@ event.  A package-wide guard test (bottom of the test module) keeps
 mutation SQL for this table out of every other module.
 
 Upsert semantics: ``QuestInstancesDao.upsert`` is idempotent on
-(definition_id, due_date) — re-running materialization for a date
-whose instance already exists updates nothing that matters
-(child_id/due_time are refreshed only in the degenerate re-generation
-case where they changed) and never duplicates a row.  The schema's
-UNIQUE(definition_id, due_date) is the last line of defense.  The
-upsert refuses a child that is not an assignee of the definition
-(D-008 multi-assignee model).
+(definition_id, child_id, due_date, window) — re-running
+materialization for a tuple whose instance already exists refreshes
+only the generation-time snapshot columns and never duplicates a row.
+The schema's UNIQUE(definition_id, child_id, due_date, window) is the
+last line of defense.  The upsert refuses a child that is not an
+assignee of the definition and a window outside ``const.QUEST_WINDOWS``
+(D-008 multi-assignee, multi-window model).
 
 ``delete_future_uncompleted`` implements the Feature 06/07 rule that
 reassignment and schedule edits regenerate future instances: it
@@ -37,7 +37,7 @@ import datetime
 from dataclasses import dataclass
 
 from .dao_children import _connection_lock
-from .dao_rules import _validate_date
+from .dao_rules import _validate_date, _validate_window
 from .db import NestQuestDatabase
 
 #: Timestamp policy for completion_events.occurred_at: strict UTC
@@ -47,6 +47,46 @@ from .db import NestQuestDatabase
 _UTC_TIMESTAMP_FORMAT = "%Y-%m-%dT%H:%M:%S+00:00"
 
 
+def _today() -> datetime.date:
+    """Return the current local calendar date (the single date source).
+
+    Every "today" read in this module goes through this one function so
+    the delete clamp and the materialize walk's no-past guard read the
+    same clock, and a caller or test can pin/roll that clock
+    deterministically (e.g. a queued-across-midnight regression).  Pure
+    clock read — no business rule lives here.
+    """
+    return datetime.date.today()
+
+
+def _resolve_today(today: datetime.date | None) -> datetime.date:
+    """Return the caller-resolved "today", or the host date when absent.
+
+    The no-past guard and the delete cutoffs must compare due dates
+    against the SAME calendar date the materialization horizon was built
+    from.  Home Assistant's configured time zone can lag the host clock
+    around midnight, so when the caller has already resolved the local
+    date (``today``) that anchor is authoritative; ``None`` falls back to
+    the host clock (:func:`_today`), which is exactly the previous
+    behavior for callers with no HA-local date.
+    """
+    return _today() if today is None else today
+
+
+def _reject_past(due_date: str, today_iso: str) -> None:
+    """Raise unless ``due_date`` is on or after ``today_iso``.
+
+    The single no-past rule shared by :meth:`QuestInstancesDao.upsert`
+    and :meth:`QuestInstancesDao.upsert_if_valid`: instances are never
+    generated in the past, measured against the resolved "today".
+    """
+    if due_date < today_iso:
+        raise ValueError(
+            f"instances are never generated in the past: due_date "
+            f"{due_date!r} is before today {today_iso!r}"
+        )
+
+
 def _validate_utc_timestamp(value: str, field: str) -> None:
     """Raise ValueError unless ``value`` is a strict UTC ISO-8601 stamp.
 
@@ -90,6 +130,7 @@ class QuestInstanceRecord:
     id: int
     definition_id: int
     child_id: int
+    window: str
     due_date: str
     due_time: str | None
     generated_at: str
@@ -105,16 +146,17 @@ class CompletionEventRecord:
     event_type: str
     actor_source: str
     actor_user_id: str | None
+    actor_child_id: int | None
     occurred_at: str
     was_on_time: bool | None
 
 
 _INSTANCE_COLUMNS = (
-    "id, definition_id, child_id, due_date, due_time, generated_at"
+    "id, definition_id, child_id, window, due_date, due_time, generated_at"
 )
 _EVENT_COLUMNS = (
     "id, instance_id, child_id, event_type, actor_source, actor_user_id, "
-    "occurred_at, was_on_time"
+    "actor_child_id, occurred_at, was_on_time"
 )
 
 #: The only event types the append path accepts; the schema CHECK is
@@ -128,9 +170,10 @@ def _instance_from_row(row: tuple) -> QuestInstanceRecord:
         id=row[0],
         definition_id=row[1],
         child_id=row[2],
-        due_date=row[3],
-        due_time=row[4],
-        generated_at=row[5],
+        window=row[3],
+        due_date=row[4],
+        due_time=row[5],
+        generated_at=row[6],
     )
 
 
@@ -142,8 +185,9 @@ def _event_from_row(row: tuple) -> CompletionEventRecord:
         event_type=row[3],
         actor_source=row[4],
         actor_user_id=row[5],
-        occurred_at=row[6],
-        was_on_time=None if row[7] is None else bool(row[7]),
+        actor_child_id=row[6],
+        occurred_at=row[7],
+        was_on_time=None if row[8] is None else bool(row[8]),
     )
 
 
@@ -160,54 +204,64 @@ class QuestInstancesDao:
         due_date: str,
         generated_at: str,
         *,
+        window: str,
         due_time: str | None = None,
+        today: datetime.date | None = None,
     ) -> QuestInstanceRecord:
-        """Create the dated instance for (definition_id, due_date) idempotently.
+        """Create the dated instance for the widened key idempotently.
 
-        Running materialization twice for the same definition/date
-        yields ONE row: the ON CONFLICT path refreshes the
-        generation-time snapshot columns (child_id, due_time) and
-        regenerates the stamp, but can never create a duplicate — the
-        schema UNIQUE(definition_id, due_date) backs this up.
+        The instance key is (definition_id, child_id, due_date, window)
+        (D-008): running materialization twice for the same tuple
+        yields ONE row — the ON CONFLICT path refreshes the
+        generation-time snapshot columns (due_time) and regenerates the
+        stamp, but can never create a duplicate.  The schema's
+        UNIQUE(definition_id, child_id, due_date, window) backs this
+        up, so the twice-daily case (two windows, one child, one date)
+        yields two rows and the shared case (three assignees, one
+        window) yields three.
 
         Guardrails enforced here:
 
         - ``due_date`` must be TODAY or later: instances are never
           generated in the past (Feature 07).  The caller's
           materialization horizon is future-dated by definition.
+          ``today`` optionally pins the resolved HA-local date the
+          guard compares against (falling back to the host clock when
+          omitted) so a household time zone behind the host around
+          midnight is not misread as "past".
+        - ``window`` must be one of ``const.QUEST_WINDOWS``.
         - An existing instance WITH a completion event is IMMUTABLE:
           the conflict path must not rewrite its snapshot columns
           (Feature 07/08).  The upsert refuses with ValueError in that
           case — silently no-oping would mask a materialization bug.
+        - The child must be an assignee of the definition (D-008
+          multi-assignee model).
 
         The definition must exist (validated atomically under the
         connection lock so a concurrent definition deactivation or
         child deletion cannot slip between check and insert).
         """
         _validate_date(due_date, "due_date")
+        _validate_window(window)
         # Fail fast on obviously-past dates BEFORE queuing on the
         # connection lock (a nice early error); the AUTHORITATIVE
         # check runs after the lock is acquired, because a caller can
         # wait on the lock across midnight — a date that was "today"
         # at call time may be "yesterday" by the time the INSERT runs.
-        today = datetime.date.today().isoformat()
-        if due_date < today:
-            raise ValueError(
-                f"instances are never generated in the past: due_date "
-                f"{due_date!r} is before today {today!r}"
-            )
+        # A caller-supplied ``today`` (HA-local) is used for BOTH
+        # checks and never re-read, since it is already the anchor the
+        # batch runs against.
+        today_date = _resolve_today(today)
+        _reject_past(due_date, today_date.isoformat())
         async with _connection_lock(self._database):
             async with self._database.transaction():
                 # Re-read "today" under the lock: this is the date the
                 # insert actually executes on, so the no-past rule
-                # holds across midnight rollovers.
-                today = datetime.date.today().isoformat()
-                if due_date < today:
-                    raise ValueError(
-                        f"instances are never generated in the past: "
-                        f"due_date {due_date!r} is before today "
-                        f"{today!r}"
-                    )
+                # holds across midnight rollovers.  A pinned HA-local
+                # anchor is exempt from the re-read (see above).
+                if today is None:
+                    today_date = _today()
+                _reject_past(due_date, today_date.isoformat())
                 definition = await self._database.fetch_one(
                     "SELECT 1 FROM quest_definitions WHERE id = ?",
                     (definition_id,),
@@ -227,51 +281,173 @@ class QuestInstancesDao:
                         f"assigned to child {child_id}; instance must "
                         "carry an assigned child"
                     )
-                child = await self._database.fetch_one(
-                    "SELECT 1 FROM children WHERE id = ?", (child_id,)
-                )
-                if child is None:
-                    raise ValueError(f"child {child_id} does not exist")
                 existing = await self._database.fetch_one(
                     "SELECT 1 FROM completion_events "
                     "WHERE instance_id = (SELECT id FROM quest_instances "
-                    "WHERE definition_id = ? AND due_date = ?)",
-                    (definition_id, due_date),
+                    "WHERE definition_id = ? AND child_id = ? "
+                    "AND due_date = ? AND window = ?)",
+                    (definition_id, child_id, due_date, window),
                 )
                 if existing is not None:
                     raise ValueError(
                         f"instance for (definition {definition_id}, "
-                        f"due_date {due_date!r}) already has a completion "
+                        f"child {child_id}, due_date {due_date!r}, "
+                        f"window {window!r}) already has a completion "
                         "event and is immutable; it cannot be regenerated"
                     )
                 await self._database.execute(
                     "INSERT INTO quest_instances (definition_id, child_id, "
-                    "due_date, due_time, generated_at) "
-                    "VALUES (?, ?, ?, ?, ?) "
-                    "ON CONFLICT (definition_id, due_date) DO UPDATE SET "
-                    "child_id = excluded.child_id, "
+                    "window, due_date, due_time, generated_at) "
+                    "VALUES (?, ?, ?, ?, ?, ?) "
+                    "ON CONFLICT (definition_id, child_id, due_date, "
+                    "window) DO UPDATE SET "
                     "due_time = excluded.due_time, "
                     "generated_at = excluded.generated_at",
                     (
                         definition_id,
                         child_id,
+                        window,
                         due_date,
                         due_time,
                         generated_at,
                     ),
                 )
-                instance = await self.get(definition_id, due_date)
+                instance = await self.get(
+                    definition_id, child_id, due_date, window
+                )
+        assert instance is not None
+        return instance
+
+    async def upsert_if_valid(
+        self,
+        definition_id: int,
+        child_id: int,
+        due_date: str,
+        generated_at: str,
+        *,
+        window: str,
+        due_time: str | None = None,
+        today: datetime.date | None = None,
+    ) -> QuestInstanceRecord | None:
+        """Insert one dated instance iff its tuple is still materializable.
+
+        This is the materialization walk's single write path.  Unlike the
+        generic :meth:`upsert`, which validates only existence and
+        assignment, this method re-validates EVERY materialization
+        precondition in the SAME connection-lock-held transaction as the
+        INSERT — closing the check-then-insert gap a concurrent config
+        write could otherwise slip through:
+
+        - the definition exists AND is active (a definition deactivated
+          after the input snapshot is skipped, never written);
+        - the child exists AND is active (a deactivated child is skipped);
+        - the (definition, child) assignment link still exists (a removed
+          assignment is skipped);
+        - the window is still declared on the definition (a removed window
+          is skipped);
+        - the window's live ``due_time`` still EQUALS the caller-supplied
+          ``due_time`` (NULL-safe: NULL == NULL counts as equal; a window
+          with no due time matches a snapshot with no due time).  A
+          window-time edit landed after the input snapshot makes the
+          caller's ``due_time`` stale, and writing it would overwrite the
+          newer due_time a concurrent regeneration already upserted — so
+          the tuple is skipped instead of written.
+
+        The due_time check closes the one check-then-insert gap this
+        method previously left open: it re-validated every OTHER
+        precondition but then wrote the snapshot's ``due_time``
+        unconditionally, so a stale materialization could clobber a
+        newer, concurrently-regenerated due_time.
+
+        Returns the stored instance, or ``None`` when a precondition
+        failed — the tuple no longer materializable, which the walk SKIPS
+        rather than raising, so the rest of the batch is unaffected.  The
+        no-past rule (instances are never generated in the past) is
+        preserved from :meth:`upsert` and still raises ValueError; ``today``
+        optionally pins the HA-local anchor it compares against.  An
+        instance that ALREADY has a completion event is also skipped
+        (returns ``None``) rather than raised: it is immutable, so the
+        walk leaves it untouched instead of failing the batch — the
+        generic :meth:`upsert` keeps its hard refusal for the
+        delete/regenerate path.
+        """
+        _validate_date(due_date, "due_date")
+        _validate_window(window)
+        # Fail fast on obviously-past dates before queuing on the lock;
+        # the authoritative check re-runs under the lock (see upsert).
+        today_date = _resolve_today(today)
+        _reject_past(due_date, today_date.isoformat())
+        async with _connection_lock(self._database):
+            async with self._database.transaction():
+                if today is None:
+                    today_date = _today()
+                _reject_past(due_date, today_date.isoformat())
+                still_valid = await self._database.fetch_one(
+                    "SELECT 1 FROM quest_definitions d "
+                    "JOIN quest_definition_assignees a "
+                    "ON a.definition_id = d.id "
+                    "JOIN children c ON c.id = a.child_id "
+                    "JOIN quest_definition_windows w "
+                    "ON w.definition_id = d.id "
+                    "WHERE d.id = ? AND a.child_id = ? AND w.window = ? "
+                    "AND d.is_active = 1 AND c.is_active = 1 "
+                    "AND w.due_time IS ? LIMIT 1",
+                    (definition_id, child_id, window, due_time),
+                )
+                if still_valid is None:
+                    # A config change invalidated the tuple since the
+                    # snapshot: skip it rather than abort the batch.
+                    return None
+                existing = await self._database.fetch_one(
+                    "SELECT 1 FROM completion_events "
+                    "WHERE instance_id = (SELECT id FROM quest_instances "
+                    "WHERE definition_id = ? AND child_id = ? "
+                    "AND due_date = ? AND window = ?)",
+                    (definition_id, child_id, due_date, window),
+                )
+                if existing is not None:
+                    # The instance is already completed and therefore
+                    # immutable: the walk SKIPS it (no-op) rather than
+                    # rewriting its snapshot columns or failing the
+                    # batch.  This is the materialization walk's skip,
+                    # distinct from the generic :meth:`upsert` refusal.
+                    return None
+                await self._database.execute(
+                    "INSERT INTO quest_instances (definition_id, child_id, "
+                    "window, due_date, due_time, generated_at) "
+                    "VALUES (?, ?, ?, ?, ?, ?) "
+                    "ON CONFLICT (definition_id, child_id, due_date, "
+                    "window) DO UPDATE SET "
+                    "due_time = excluded.due_time, "
+                    "generated_at = excluded.generated_at",
+                    (
+                        definition_id,
+                        child_id,
+                        window,
+                        due_date,
+                        due_time,
+                        generated_at,
+                    ),
+                )
+                instance = await self.get(
+                    definition_id, child_id, due_date, window
+                )
         assert instance is not None
         return instance
 
     async def get(
-        self, definition_id: int, due_date: str
+        self,
+        definition_id: int,
+        child_id: int,
+        due_date: str,
+        window: str,
     ) -> QuestInstanceRecord | None:
-        """Return the instance for (definition_id, due_date), or None."""
+        """Return the instance for the widened key tuple, or None."""
         row = await self._database.fetch_one(
             f"SELECT {_INSTANCE_COLUMNS} FROM quest_instances "
-            "WHERE definition_id = ? AND due_date = ?",
-            (definition_id, due_date),
+            "WHERE definition_id = ? AND child_id = ? AND due_date = ? "
+            "AND window = ?",
+            (definition_id, child_id, due_date, window),
         )
         return _instance_from_row(row) if row is not None else None
 
@@ -317,8 +493,45 @@ class QuestInstancesDao:
         )
         return [_instance_from_row(row) for row in rows]
 
+    async def list_missed_unswept(
+        self, today_iso: str, watermark: str | None
+    ) -> list[QuestInstanceRecord]:
+        """Return past-due open instances the sweep has not announced.
+
+        Feature 11's missed-sweep query: ``due_date`` strictly before
+        ``today_iso`` (past due), at or after ``watermark`` when one is
+        recorded, and with NO completion event ever (the Feature 08
+        append-only contract: an instance that was ever completed is
+        never reported missed, even when later reversed — history keeps
+        both rows and the sweep never mutates any).  The watermark is
+        the HA-local date the sweep last ran, and the window is
+        ``[watermark, today)``: the nightly run entering day D+1 sweeps
+        exactly day D's instances, so every day's quests are announced
+        once — at the midnight after their due date — and a same-night
+        rerun (watermark == today) sees an empty window.  Read-only;
+        ordered deterministically by (due_date, id).
+        """
+        _validate_date(today_iso, "today_iso")
+        if watermark is not None:
+            _validate_date(watermark, "watermark")
+        sql = (
+            f"SELECT {_INSTANCE_COLUMNS} FROM quest_instances "
+            "WHERE due_date < ? "
+            "AND NOT EXISTS ("
+            "  SELECT 1 FROM completion_events "
+            "  WHERE instance_id = quest_instances.id"
+            ")"
+        )
+        parameters: tuple = (today_iso,)
+        if watermark is not None:
+            sql += " AND due_date >= ?"
+            parameters += (watermark,)
+        sql += " ORDER BY due_date, id"
+        rows = await self._database.fetch_all(sql, parameters)
+        return [_instance_from_row(row) for row in rows]
+
     async def delete_future_uncompleted(
-        self, definition_id: int, cutoff_date: str
+        self, definition_id: int, cutoff_date: str, *, today: datetime.date | None = None
     ) -> int:
         """Delete the definition's open instances at/after cutoff.
 
@@ -330,9 +543,11 @@ class QuestInstancesDao:
         is measured against TODAY (materialization regenerates the
         rolling horizon from now), so a caller cannot use this to
         rewrite past open instances either — the day-rollover missed
-        sweep (Feature 11) handles past-due instances instead.  Any
-        instance with a completion event is never touched, regardless
-        of its date.  Returns the number deleted.
+        sweep (Feature 11) handles past-due instances instead.  ``today``
+        optionally pins the HA-local anchor the clamp compares against
+        (falling back to the host clock when omitted).  Any instance with
+        a completion event is never touched, regardless of its date.
+        Returns the number deleted.
         """
         _validate_date(cutoff_date, "cutoff_date")
         async with _connection_lock(self._database):
@@ -342,8 +557,8 @@ class QuestInstancesDao:
                 # midnight cannot delete instances that became past
                 # while it waited (backdating is clamped to the
                 # execution date, not the call date).
-                today = datetime.date.today().isoformat()
-                effective_cutoff = max(cutoff_date, today)
+                today_date = _resolve_today(today)
+                effective_cutoff = max(cutoff_date, today_date.isoformat())
                 result = await self._database.execute(
                     "DELETE FROM quest_instances WHERE definition_id = ? "
                     "AND due_date >= ? AND NOT EXISTS ("
@@ -354,6 +569,51 @@ class QuestInstancesDao:
                 )
         return result.rowcount
 
+    async def delete_future_uncompleted_for_child(
+        self, child_id: int, cutoff_date: str, *, today: datetime.date | None = None
+    ) -> tuple[int, str]:
+        """Delete the child's open instances at/after cutoff, across every
+        definition, returning ``(deleted, effective_cutoff)``.
+
+        Child-scoped counterpart to :meth:`delete_future_uncompleted`,
+        used when a child's presence changes (Feature 09): only instances
+        at or after the cutoff with NO completion event are removed, inside
+        one transaction — an instance that gains a completion event
+        mid-flight cannot be deleted.  The cutoff cannot be backdated below
+        today, for the same reason as the definition-scoped method (see its
+        docstring).  ``today`` optionally pins the HA-local anchor the clamp
+        compares against (falling back to the host clock when omitted).
+        Any instance with a completion event is never touched, regardless
+        of its date.
+
+        Returns the number deleted and the effective cutoff that was
+        actually applied (``max(cutoff_date, today)``, read under the
+        lock).  The caller (:func:`~.materialize.regenerate_for_child`)
+        passes that effective cutoff back as its re-materialization anchor,
+        so the delete and the rebuild share ONE execution-day even when the
+        call is queued across midnight — instead of the caller re-reading a
+        stale "today" and materializing a window the delete already
+        superseded.
+        """
+        _validate_date(cutoff_date, "cutoff_date")
+        async with _connection_lock(self._database):
+            async with self._database.transaction():
+                # "today" is read under the lock, matching the
+                # definition-scoped method: the DELETE executes on this
+                # date, so a caller queued across midnight cannot delete
+                # instances that became past while it waited.
+                today_date = _resolve_today(today)
+                effective_cutoff = max(cutoff_date, today_date.isoformat())
+                result = await self._database.execute(
+                    "DELETE FROM quest_instances WHERE child_id = ? "
+                    "AND due_date >= ? AND NOT EXISTS ("
+                    "  SELECT 1 FROM completion_events "
+                    "  WHERE instance_id = quest_instances.id"
+                    ")",
+                    (child_id, effective_cutoff),
+                )
+        return result.rowcount, effective_cutoff
+
 
 class CompletionEventsDao:
     """Typed append-only access to the ``completion_events`` table.
@@ -380,19 +640,21 @@ class CompletionEventsDao:
         was_on_time: bool | None,
         *,
         actor_user_id: str | None = None,
+        actor_child_id: int | None = None,
     ) -> CompletionEventRecord:
         """Append one completion or un-completion event.
 
-        ``actor_source`` is 'user' (with ``actor_user_id`` set) or
-        'panel' (no user id — the tapped child is ``child_id``); the
-        actor-pair CHECK enforces this shape at the schema level.
-        ``occurred_at`` must be the module's one strict UTC shape
-        (YYYY-MM-DDTHH:MM:SS+00:00) so lexicographic range queries
-        stay exact.  ``was_on_time`` is required (True/False) for
-        completions; for un-completions it may be None or the reversed
-        completion's flag (Feature 08 still deciding).  The instance
-        and child must exist — validated atomically under the
-        connection lock.
+        ``actor_source`` is 'user' (an admin action: ``actor_user_id``
+        set, ``actor_child_id`` NULL) or 'panel' (a panel tap: no user
+        id, and ``actor_child_id`` carrying the tapped child profile,
+        D-008); the actor-pair CHECKs enforce this shape at the schema
+        level.  ``occurred_at`` must be the module's one strict UTC
+        shape (YYYY-MM-DDTHH:MM:SS+00:00) so lexicographic range
+        queries stay exact.  ``was_on_time`` is required (True/False)
+        for completions; for un-completions it may be None or the
+        reversed completion's flag (Feature 08 still deciding).  The
+        instance, child and — for panel events — the tapped child must
+        exist — validated atomically under the connection lock.
         """
         if event_type not in (EVENT_COMPLETED, EVENT_UNCOMPLETED):
             raise ValueError(
@@ -412,6 +674,15 @@ class CompletionEventsDao:
             raise ValueError(
                 "actor_source 'panel' must not carry actor_user_id"
             )
+        if actor_source == "panel" and actor_child_id is None:
+            raise ValueError(
+                "actor_source 'panel' requires actor_child_id "
+                "(the tapped child profile)"
+            )
+        if actor_source == "user" and actor_child_id is not None:
+            raise ValueError(
+                "actor_source 'user' must not carry actor_child_id"
+            )
         if was_on_time is not None and type(was_on_time) is not bool:
             raise ValueError(
                 f"was_on_time must be True, False or None, got "
@@ -442,16 +713,28 @@ class CompletionEventsDao:
                 )
                 if child is None:
                     raise ValueError(f"child {child_id} does not exist")
+                if actor_child_id is not None:
+                    tapped = await self._database.fetch_one(
+                        "SELECT 1 FROM children WHERE id = ?",
+                        (actor_child_id,),
+                    )
+                    if tapped is None:
+                        raise ValueError(
+                            f"actor_child_id {actor_child_id} does not "
+                            "reference an existing child"
+                        )
                 result = await self._database.execute(
                     "INSERT INTO completion_events (instance_id, child_id, "
-                    "event_type, actor_source, actor_user_id, occurred_at, "
-                    "was_on_time) VALUES (?, ?, ?, ?, ?, ?, ?)",
+                    "event_type, actor_source, actor_user_id, "
+                    "actor_child_id, occurred_at, was_on_time) "
+                    "VALUES (?, ?, ?, ?, ?, ?, ?, ?)",
                     (
                         instance_id,
                         child_id,
                         event_type,
                         actor_source,
                         actor_user_id,
+                        actor_child_id,
                         occurred_at,
                         None if was_on_time is None else int(was_on_time),
                     ),

custom_components/nestquest/core/dao_meta.py

@@ -0,0 +1,78 @@
+"""Typed DAO for the integration-owned ``nestquest_meta_state`` table.
+
+Generic persistent key/value bookkeeping that belongs to the
+integration itself rather than any domain table — currently the
+Feature 11 missed-sweep watermark.  Values are plain strings; callers
+interpret them.  All SQL for this table lives here per the feature
+guardrails, and every method runs through
+:class:`~.db.NestQuestDatabase` so nothing blocks the event loop.
+"""
+from __future__ import annotations
+
+from .dao_children import _connection_lock
+from .db import NestQuestDatabase
+
+_TABLE = "nestquest_meta_state"
+
+
+class MetaStateDao:
+    """Typed async access to the ``nestquest_meta_state`` table."""
+
+    def __init__(self, database: NestQuestDatabase) -> None:
+        self._database = database
+
+    async def get(self, key: str) -> str | None:
+        """Return the stored value for ``key``, or None when absent."""
+        row = await self._database.fetch_one(
+            f"SELECT value FROM {_TABLE} WHERE key = ?", (key,)
+        )
+        return row[0] if row is not None else None
+
+    async def set(self, key: str, value: str) -> None:
+        """Upsert one key/value row atomically.
+
+        The write runs inside one transaction under the shared
+        connection lock, so a racing reader either sees the old value
+        or the fully-written new one, never a half-applied state.
+        """
+        async with _connection_lock(self._database):
+            async with self._database.transaction():
+                await self._database.execute(
+                    f"INSERT INTO {_TABLE} (key, value) VALUES (?, ?) "
+                    "ON CONFLICT (key) DO UPDATE SET value = excluded.value",
+                    (key, value),
+                )
+
+    async def claim(self, key: str, value: str) -> bool:
+        """Atomically set ``key`` to ``value`` unless it already is.
+
+        The single upsert statement carries a ``WHERE`` guard on the
+        conflict path (``t.value IS NOT excluded.value``), so the
+        read-compare-write is ONE SQLite statement — atomic at the
+        DATABASE level, not just within one process: two connections
+        (two processes sharing one SQLite file) cannot both observe
+        "not yet set" and both write, because the second writer's
+        statement re-evaluates the guard against the first writer's
+        committed value and matches zero rows.
+
+        Returns True only when THIS call changed the row: the first
+        claimant wins and every later claimant of the same value
+        returns False.  A DIFFERENT value always wins (an advance, e.g.
+        the sweep watermark moving to a new date) and re-arms the
+        same-value loser check for the new value.
+
+        Runs under the shared connection lock and inside one
+        transaction, like :meth:`set`; ``cursor.rowcount`` (1 for a
+        matched write, 0 for a guarded no-op) is captured by the
+        wrapper on the executor thread, so no sqlite3 object crosses
+        back to the event loop.
+        """
+        async with _connection_lock(self._database):
+            async with self._database.transaction():
+                result = await self._database.execute(
+                    f"INSERT INTO {_TABLE} (key, value) VALUES (?, ?) "
+                    "ON CONFLICT (key) DO UPDATE SET value = excluded.value "
+                    f"WHERE {_TABLE}.value IS NOT excluded.value",
+                    (key, value),
+                )
+        return result.rowcount == 1

custom_components/nestquest/core/dao_presence.py

@@ -186,6 +186,15 @@ class PresenceOverridesDao:
         The child must exist (validated atomically under the
         connection lock).  Date shape is validated strictly, and the
         schema CHECK rejects end < start.
+
+        Overlap policy (Feature 05): an override for a child may not
+        overlap another override of the SAME child — two different
+        present/absent answers for one date are unresolvable.  The
+        overlap check (inclusive boundaries) runs inside the same
+        transaction as the INSERT, so a racing create cannot slip a
+        conflicting override between the check and the write; a
+        conflict raises ValueError naming the conflicting override's
+        id and range.
         """
         _validate_date(start_date, "start_date")
         _validate_date(end_date, "end_date")
@@ -196,6 +205,29 @@ class PresenceOverridesDao:
                 )
                 if child is None:
                     raise ValueError(f"child {child_id} does not exist")
+                # Only a well-ordered range has overlap semantics:
+                # inverted ranges fall through to the INSERT and hit
+                # the schema's end>=start CHECK, preserving the
+                # IntegrityError contract the matrix tests rely on.
+                if end_date >= start_date:
+                    conflicting = await self._database.fetch_one(
+                        f"SELECT {_OVERRIDE_COLUMNS} "
+                        "FROM presence_overrides "
+                        "WHERE child_id = ? AND end_date >= ? "
+                        "AND start_date <= ? ORDER BY id LIMIT 1",
+                        (child_id, start_date, end_date),
+                    )
+                else:
+                    conflicting = None
+                if conflicting is not None:
+                    conflict = _override_from_row(conflicting)
+                    raise ValueError(
+                        f"override for child {child_id} "
+                        f"[{start_date}, {end_date}] overlaps existing "
+                        f"override {conflict.id} "
+                        f"[{conflict.start_date}, {conflict.end_date}] "
+                        f"(is_present={conflict.is_present})"
+                    )
                 result = await self._database.execute(
                     "INSERT INTO presence_overrides (child_id, "
                     "start_date, end_date, is_present, note) "
@@ -238,10 +270,74 @@ class PresenceOverridesDao:
         )
         return [_override_from_row(row) for row in rows]
 
+    async def get(self, override_id: int) -> PresenceOverrideRecord | None:
+        """Return one override by id, or None when it does not exist."""
+        row = await self._database.fetch_one(
+            f"SELECT {_OVERRIDE_COLUMNS} FROM presence_overrides "
+            "WHERE id = ?",
+            (override_id,),
+        )
+        return _override_from_row(row) if row is not None else None
+
     async def delete(self, override_id: int) -> bool:
         """Remove one override by id; True if a row was removed."""
         result = await self._database.execute(
             "DELETE FROM presence_overrides WHERE id = ?",
             (override_id,),
         )
-        return result.rowcount > 0
+        return result.rowcount > 0
+
+
+async def read_snapshot_unlocked(
+    database: NestQuestDatabase,
+    child_ids: list[int],
+    range_start: str,
+    range_end: str,
+) -> tuple[
+    dict[int, PresenceScheduleRecord],
+    dict[int, list[PresenceOverrideRecord]],
+]:
+    """Read schedules and overrides for ``child_ids`` WITHOUT locking.
+
+    MUST be called inside the connection lock and an open transaction, so
+    the schedules and overrides returned here stay coherent with every
+    other table the caller reads inside that same transaction (the
+    materialization walk's single input snapshot does exactly that).  The
+    date range comes already validated by the caller.
+
+    Returns ``(schedules, overrides)``:
+
+    - ``schedules`` maps ``child_id`` to its :class:`PresenceScheduleRecord`
+      for every child that HAS a schedule row.  A child absent from the
+      mapping has no schedule, i.e. is present every day (Feature 05).
+    - ``overrides`` maps ``child_id`` to that child's overrides overlapping
+      ``[range_start, range_end]`` (inclusive boundaries), ordered by start
+      date; a child with no matching override is absent from the mapping.
+
+    ``child_ids`` must name existing children (the caller derives them
+    from a trusted snapshot, within the same transaction).
+    """
+    children = sorted(set(child_ids))
+    if not children:
+        return {}, {}
+    placeholders = ",".join("?" for _ in children)
+    schedule_rows = await database.fetch_all(
+        f"SELECT {_SCHEDULE_COLUMNS} FROM presence_schedules "
+        f"WHERE child_id IN ({placeholders})",
+        tuple(children),
+    )
+    override_rows = await database.fetch_all(
+        f"SELECT {_OVERRIDE_COLUMNS} FROM presence_overrides "
+        f"WHERE child_id IN ({placeholders}) AND end_date >= ? "
+        "AND start_date <= ? ORDER BY start_date",
+        tuple(children) + (range_start, range_end),
+    )
+    schedules = {
+        record.child_id: record
+        for record in map(_schedule_from_row, schedule_rows)
+    }
+    overrides: dict[int, list[PresenceOverrideRecord]] = {}
+    for row in override_rows:
+        record = _override_from_row(row)
+        overrides.setdefault(record.child_id, []).append(record)
+    return schedules, overrides

custom_components/nestquest/core/db.py

@@ -3,13 +3,19 @@ from __future__ import annotations
 
 import asyncio
 import sqlite3
-from collections.abc import AsyncIterator, Awaitable, Sequence
+from collections.abc import AsyncIterator, Awaitable, Callable, Sequence
 from contextlib import asynccontextmanager
 from dataclasses import dataclass
 from pathlib import Path
-from typing import Any
+from typing import Any, TypeVar
 
-from homeassistant.core import HomeAssistant
+T = TypeVar("T")
+
+#: Executor contract: schedule a synchronous callable on a worker
+#: thread/futures pool and await its result.  Mirrors the shape of
+#: ``hass.async_add_executor_job`` so the integration wires it in with a
+#: bare method reference, but this package never imports Home Assistant.
+Executor = Callable[..., Awaitable[T]]
 
 
 @dataclass(frozen=True)
@@ -28,10 +34,11 @@ class ExecutionResult:
 class NestQuestDatabase:
     """Async wrapper around a single SQLite connection.
 
-    Every sqlite3 call is delegated to the Home Assistant executor through
-    ``hass.async_add_executor_job`` so the event loop is never blocked, and
-    only plain Python data (row tuples and :class:`ExecutionResult`) is
-    returned to the event loop.
+    Every sqlite3 call is delegated to a worker through the ``executor``
+    callable passed at construction (mirroring the contract of
+    ``hass.async_add_executor_job``) so the event loop is never blocked,
+    and only plain Python data (row tuples and
+    :class:`ExecutionResult`) is returned to the event loop.
 
     Every operation is serialized through one asyncio.Lock per wrapper.  A
     ``transaction()`` holds that lock for its whole BEGIN..COMMIT span, so
@@ -50,9 +57,16 @@ class NestQuestDatabase:
     while the executor thread is mid-job.
     """
 
-    def __init__(self, hass: HomeAssistant) -> None:
-        """Initialize the wrapper around a Home Assistant instance."""
-        self._hass = hass
+    def __init__(self, executor: Callable[..., Awaitable[T]]) -> None:
+        """Initialize the wrapper around an executor callable.
+
+        ``executor`` schedules a synchronous callable on a worker and
+        returns an awaitable of its result — the contract of
+        ``hass.async_add_executor_job``.  The integration passes that
+        method directly; tests pass a helper backed by
+        :func:`asyncio.to_thread` or an inline runner.
+        """
+        self._executor: Callable[..., Awaitable[Any]] = executor
         self._conn: sqlite3.Connection | None = None
         self._rowcount: int = -1
         self._lastrowid: int | None = None
@@ -139,7 +153,7 @@ class NestQuestDatabase:
                 return conn
 
             settled, cancelled = await self._await_settled_state(
-                self._hass.async_add_executor_job(_open)
+                self._executor(_open)
             )
             if cancelled:
                 if isinstance(settled, sqlite3.Connection):
@@ -148,7 +162,7 @@ class NestQuestDatabase:
                         settled.close()
 
                     await self._await_settled(
-                        self._hass.async_add_executor_job(_close_abandoned)
+                        self._executor(_close_abandoned)
                     )
                 raise asyncio.CancelledError()
             self._conn = settled
@@ -166,7 +180,7 @@ class NestQuestDatabase:
                 return ExecutionResult(cursor.rowcount, cursor.lastrowid)
 
             result = await self._await_settled(
-                self._hass.async_add_executor_job(_execute)
+                self._executor(_execute)
             )
             self._rowcount = result.rowcount
             self._lastrowid = result.lastrowid
@@ -184,7 +198,7 @@ class NestQuestDatabase:
                 return ExecutionResult(cursor.rowcount, cursor.lastrowid)
 
             result = await self._await_settled(
-                self._hass.async_add_executor_job(_execute_many)
+                self._executor(_execute_many)
             )
             self._rowcount = result.rowcount
             self._lastrowid = result.lastrowid
@@ -202,7 +216,7 @@ class NestQuestDatabase:
                 return cursor.fetchone(), cursor.rowcount, cursor.lastrowid
 
             row, rowcount, lastrowid = await self._await_settled(
-                self._hass.async_add_executor_job(_fetch_one)
+                self._executor(_fetch_one)
             )
             self._rowcount = rowcount
             self._lastrowid = lastrowid
@@ -220,7 +234,7 @@ class NestQuestDatabase:
                 return cursor.fetchall(), cursor.rowcount, cursor.lastrowid
 
             rows, rowcount, lastrowid = await self._await_settled(
-                self._hass.async_add_executor_job(_fetch_all)
+                self._executor(_fetch_all)
             )
             self._rowcount = rowcount
             self._lastrowid = lastrowid
@@ -261,7 +275,7 @@ class NestQuestDatabase:
 
                 await self._settle_lifecycle(
                     conn,
-                    self._hass.async_add_executor_job(_begin),
+                    self._executor(_begin),
                     "BEGIN did not settle cleanly and the follow-up "
                     "cleanup also raised; the transaction may need manual "
                     "cleanup",
@@ -275,7 +289,7 @@ class NestQuestDatabase:
 
                     await self._settle_lifecycle(
                         conn,
-                        self._hass.async_add_executor_job(_rollback),
+                        self._executor(_rollback),
                         "ROLLBACK failed and the follow-up cleanup also "
                         "raised; the transaction may need manual cleanup",
                     )
@@ -286,7 +300,7 @@ class NestQuestDatabase:
 
                 await self._settle_lifecycle(
                     conn,
-                    self._hass.async_add_executor_job(_commit),
+                    self._executor(_commit),
                     "COMMIT failed and the follow-up cleanup also raised; "
                     "the transaction may need manual cleanup",
                 )
@@ -337,7 +351,7 @@ class NestQuestDatabase:
             return conn.in_transaction
 
         stray = await self._await_settled(
-            self._hass.async_add_executor_job(_cleanup)
+            self._executor(_cleanup)
         )
         if stray:
             raise RuntimeError(
@@ -412,7 +426,7 @@ class NestQuestDatabase:
             def _close() -> None:
                 conn.close()
 
-            await self._await_settled(self._hass.async_add_executor_job(_close))
+            await self._await_settled(self._executor(_close))
 
     def _require_conn(self) -> sqlite3.Connection:
         if self._conn is None:

custom_components/nestquest/core/events.py

@@ -0,0 +1,210 @@
+"""Transition-event payload construction for the NestQuest service paths (Feature 10).
+
+This module is PAYLOAD CONSTRUCTION ONLY: it builds and RETURNS the
+transition events (event type + payload dict) and never touches the
+Home Assistant event bus or config.  The caller decides how to fire
+them (the integration's re-export shim wires the returned events to
+``hass.bus.async_fire``).
+
+The four documented events (design/ENTITIES-AND-SERVICES.md §3, names
+in :mod:`~.const`): ``nestquest_quest_completed`` and
+``nestquest_quest_uncompleted`` fire from the completion service
+handlers on an actual transition (a no-op re-complete or re-uncomplete
+fires nothing), and ``nestquest_child_day_complete`` fires when a
+completion clears the child's whole day (quests were owed and none
+remain — a zero-quest day can never fire it, matching the all-done
+binary sensor's rule).  ``nestquest_quest_missed`` is the documented
+contract Feature 11's nightly sweep fires; :func:`build_quest_missed_event`
+builds it with exactly the payload the sweep hand-builds (§3), so the
+API plane can publish the same shape without re-deriving it.
+
+The completed-event and day-complete-event builders are split so the
+shim can fire ``nestquest_quest_completed`` BEFORE it evaluates the
+day-complete rule (the pre-extraction implementation fired the
+completed event on the bus first, then ran the day-complete DB reads;
+a failure in those reads or the ZoneInfo lookup must not suppress the
+completed event).  :func:`build_quest_completed_event` builds the
+completed event from the instance and its child/definition only;
+:func:`build_child_day_complete_event` runs the day-complete DB reads
+and returns the day-complete event (or ``None``).  The shim fires the
+completed event, then calls the day-complete builder and fires its
+result.  :func:`build_quest_uncompleted_events` builds the single
+uncompleted event.
+
+Payload policy: one dict carrying ``child_id``, ``child_name``,
+``instance_id``, ``quest_title``, the instance's ``window``/
+``due_date``/``due_time`` so automation authors can filter without a
+database lookup, and ``occurred_at`` — the event's own strict UTC
+ISO-8601 timestamp.  Completion payloads additionally carry
+``was_on_time``.  No other personal data: names and titles are the
+household's own records, and nothing beyond them leaks.
+
+Timezone policy: the day-complete check needs the HA-local "today",
+which the caller passes in as a plain :class:`datetime.date`.  Nothing
+here reads ``hass.config.time_zone`` — the integration owns HA
+timezone, the core owns the calendar arithmetic.
+"""
+from __future__ import annotations
+
+import datetime
+
+from .completion import derive_state
+from .const import (
+    EVENT_CHILD_DAY_COMPLETE,
+    EVENT_QUEST_COMPLETED,
+    EVENT_QUEST_MISSED,
+    EVENT_QUEST_UNCOMPLETED,
+)
+from .dao_children import ChildrenDao
+from .dao_instances import CompletionEventsDao, QuestInstancesDao
+from .dao_rules import QuestDefinitionsDao
+from .db import NestQuestDatabase
+
+#: Strict UTC ISO-8601 timestamp (the DAO layers' policy): one shape,
+#: explicit offset, second precision.
+_UTC_TIMESTAMP_FORMAT = "%Y-%m-%dT%H:%M:%S+00:00"
+
+
+def _now_stamp() -> str:
+    return datetime.datetime.now(datetime.timezone.utc).strftime(
+        _UTC_TIMESTAMP_FORMAT
+    )
+
+
+async def _instance_payload(
+    database: NestQuestDatabase, instance_id: int, now_stamp: str
+) -> dict:
+    """Build the shared event payload for one quest instance."""
+    instance = await QuestInstancesDao(database).get_by_id(instance_id)
+    if instance is None:
+        raise ValueError(
+            f"instance_id: quest instance {instance_id} does not exist"
+        )
+    child = await ChildrenDao(database).get(instance.child_id)
+    definition = await QuestDefinitionsDao(database).get(
+        instance.definition_id
+    )
+    return {
+        "child_id": instance.child_id,
+        "child_name": child.display_name if child else None,
+        "instance_id": instance.id,
+        "quest_title": definition.title if definition else None,
+        "window": instance.window,
+        "due_date": instance.due_date,
+        "due_time": instance.due_time,
+        "occurred_at": now_stamp,
+    }
+
+
+async def build_quest_completed_event(
+    database: NestQuestDatabase,
+    instance_id: int,
+    *,
+    was_on_time: bool | None,
+) -> tuple[str, dict]:
+    """Build the ``nestquest_quest_completed`` event for an actual
+    completion.
+
+    Called by the complete_quest service handler AFTER an actual
+    completion transition, with the completion's ``was_on_time`` —
+    computed under the completion lock and carried on the result — so
+    the payload never re-reads mutable latest state a racing reversal
+    could have replaced.  A no-op re-complete never reaches here.
+
+    Returns the ``(event_type, payload)`` tuple to fire.  This builder
+    touches NO day-complete state: it only reads the instance, its
+    child, and its definition, so a failure in the day-complete
+    evaluation (DB reads, timezone lookup in the shim) cannot suppress
+    the completed event.  The caller fires this BEFORE asking
+    :func:`build_child_day_complete_event` for the day-complete event.
+    """
+    now_stamp = _now_stamp()
+    payload = await _instance_payload(database, instance_id, now_stamp)
+    payload["was_on_time"] = was_on_time
+    return (EVENT_QUEST_COMPLETED, payload)
+
+
+async def build_child_day_complete_event(
+    database: NestQuestDatabase,
+    completed_payload: dict,
+    *,
+    today: datetime.date,
+) -> tuple[str, dict] | None:
+    """Build the ``nestquest_child_day_complete`` event for a
+    completion that cleared the child's whole day, or ``None`` when no
+    day-complete event should fire.
+
+    Called by the complete_quest service handler AFTER the
+    ``nestquest_quest_completed`` event has already been fired, with
+    that event's payload (so this builder reuses the same
+    ``occurred_at`` stamp and the same ``child_id`` / ``child_name``
+    the completed event carried — one transition, one shared
+    timestamp, matching the pre-extraction implementation).
+
+    Day-complete rule (identical to the pre-extraction implementation
+    and to the all-done binary sensor): quests were owed today and
+    none remain — a zero-quest day can never fire it.  Only a
+    completion of TODAY'S instance evaluates it: completing a
+    back-dated or future instance must not announce a cleared day.
+
+    ``today`` is the HA-local calendar date the day-complete rule is
+    evaluated against; the integration reads it from
+    ``hass.config.time_zone`` and passes it in, so this module never
+    touches HA config.
+    """
+    # Only a completion of TODAY'S instance evaluates the day-complete
+    # rule: completing a back-dated or future instance must not
+    # announce a cleared day.
+    if completed_payload["due_date"] != today.isoformat():
+        return None
+    instances = await QuestInstancesDao(database).list_by_date_range(
+        completed_payload["child_id"], today.isoformat(), today.isoformat()
+    )
+    completion_events = CompletionEventsDao(database)
+    remaining = 0
+    for instance in instances:
+        latest_for_instance = await completion_events.get_latest_for_instance(
+            instance.id
+        )
+        if derive_state(instance, latest_for_instance, today) != "done":
+            remaining += 1
+    if not instances or remaining:
+        return None
+    return (
+        EVENT_CHILD_DAY_COMPLETE,
+        {
+            "child_id": completed_payload["child_id"],
+            "child_name": completed_payload["child_name"],
+            "quests_due": len(instances),
+            "quests_completed": len(instances),
+            "occurred_at": completed_payload["occurred_at"],
+        },
+    )
+
+
+async def build_quest_uncompleted_events(
+    database: NestQuestDatabase, instance_id: int
+) -> list[tuple[str, dict]]:
+    """Build the ``nestquest_quest_uncompleted`` event for an actual reversal.
+
+    Returns a one-element list of ``(event_type, payload)`` to fire.
+    """
+    payload = await _instance_payload(database, instance_id, _now_stamp())
+    return [(EVENT_QUEST_UNCOMPLETED, payload)]
+
+
+async def build_quest_missed_event(
+    database: NestQuestDatabase, instance_id: int
+) -> tuple[str, dict]:
+    """Build the ``nestquest_quest_missed`` event for one instance.
+
+    The payload mirrors the nightly sweep's hand-built payload exactly
+    (the shared :func:`_instance_payload` shape: ``child_id``,
+    ``child_name``, ``instance_id``, ``quest_title``, ``window``,
+    ``due_date``, ``due_time``, ``occurred_at``), so the API plane's
+    missed path publishes the same event shape the integration's sweep
+    fires.  Like the sweep, this builder never mutates the instance or
+    writes a completion event — it reads only.
+    """
+    payload = await _instance_payload(database, instance_id, _now_stamp())
+    return (EVENT_QUEST_MISSED, payload)

custom_components/nestquest/core/history.py

@@ -0,0 +1,405 @@
+"""Read-only history layer for the admin plane (Admin spec §5, task 2d2dda53).
+
+Assembles the History screen's event rows over the append-only
+completion log: a query over a CLOSED date range ``[start_date,
+end_date]`` for one of three filters —
+
+- ``all`` — every completion event (completed AND uncompleted) whose
+  instance is due in the range;
+- ``reversals`` — the uncompleted events only;
+- ``missed`` — the DERIVED missed instances in the range.
+
+Range semantics (Feature 13's rule, kept): the range scopes by the
+INSTANCE's ``due_date`` — the day the task was owed — not the event's
+wall-clock ``occurred_at``, because history reporting asks "what
+happened to the tasks due that day".  ``missed`` is derived, never
+stored: rows come from :func:`~.completion.list_missed_for_child`
+(past-due open instances, the same ``_derived_state`` rule the
+coordinator uses), and nothing is ever appended for them.
+
+Row shape: the Admin spec §5 event-row fields, fixed and documented in
+:data:`CSV_COLUMNS` — ``occurred_at``, ``event_type``,
+``child_name``, ``child_id``, ``quest_title``, ``instance_id``,
+``window``, ``due_date``, ``due_time``, ``actor``, ``was_on_time``.
+Derived missed rows carry ``event_type`` ``'missed'`` (never a stored
+event_type), no ``occurred_at`` (there is no event), ``was_on_time``
+``None`` and the spec's ``nightly sweep`` actor.  A stored event's
+``actor`` follows the spec's meta shape: the ``actor_user_id`` string
+for a user event (``joshua``), ``panel (Child)`` naming the tapped
+profile for a panel event.
+
+Validation policy (module-level, shared by both the JSON query and the
+CSV export): the filter must be one of :data:`FILTERS` and the range
+must be two strict ``YYYY-MM-DD`` dates with ``end >= start``;
+violations raise ``ValueError`` naming the offending field
+(``filter`` / ``start`` / ``end``) BEFORE any read.  The whole
+household read runs under the task-reentrant connection lock so every
+row of one answer is one snapshot — the same discipline
+:mod:`.completion` gives its read-decide-write paths.
+
+:func:`rows_to_csv` serializes rows with the :mod:`csv` module (proper
+quoting, one stable header row) and :func:`export_history_csv` runs
+query + serialization as ONE call, so the CSV export can never drift
+from the JSON query's filtered range.  No permission check lives here
+(that is the admin router's single ``require_admin`` dependency).
+"""
+from __future__ import annotations
+
+import csv
+import datetime
+import io
+from dataclasses import dataclass
+
+from .completion import _reentrant_connection_lock, list_missed_for_child
+from .dao_children import ChildRecord, ChildrenDao
+from .dao_instances import (
+    EVENT_UNCOMPLETED,
+    CompletionEventRecord,
+    CompletionEventsDao,
+    QuestInstanceRecord,
+    QuestInstancesDao,
+)
+from .dao_rules import QuestDefinitionsDao, _validate_date
+from .db import NestQuestDatabase
+
+#: The ``all`` filter: every completion event in the range.
+FILTER_ALL = "all"
+
+#: The ``reversals`` filter: uncompleted events only.
+FILTER_REVERSALS = "reversals"
+
+#: The ``missed`` filter: derived missed instances in the range.
+FILTER_MISSED = "missed"
+
+#: The filters the query accepts, in the Admin spec's chip order.
+FILTERS = (FILTER_ALL, FILTER_REVERSALS, FILTER_MISSED)
+
+#: The ``event_type`` a derived missed row reports.  ``missed`` is a
+#: DERIVED state, never a stored event_type (Feature 08).
+EVENT_MISSED = "missed"
+
+#: The actor a derived missed row reports (Admin spec §5 meta:
+#: ``missed · nightly sweep``).
+ACTOR_NIGHTLY_SWEEP = "nightly sweep"
+
+#: The CSV column set, in header order — the Admin spec §5 event-row
+#: fields.  The header row is exactly this tuple, always, so a consumer
+#: can key on column names.
+CSV_COLUMNS = (
+    "occurred_at",
+    "event_type",
+    "child_name",
+    "child_id",
+    "quest_title",
+    "instance_id",
+    "window",
+    "due_date",
+    "due_time",
+    "actor",
+    "was_on_time",
+)
+
+
+@dataclass(frozen=True)
+class HistoryRow:
+    """One history row: a stored event or a derived missed instance.
+
+    The fields are :data:`CSV_COLUMNS` in order.  For a derived missed
+    row ``occurred_at`` is ``None`` (no event exists) and ``was_on_time``
+    is ``None``; for a stored event ``event_type`` is
+    ``'completed'``/``'uncompleted'`` and the fields come from the event
+    joined with its instance, child and definition.
+    """
+
+    occurred_at: str | None
+    event_type: str
+    child_name: str
+    child_id: int
+    quest_title: str
+    instance_id: int
+    window: str
+    due_date: str
+    due_time: str | None
+    actor: str
+    was_on_time: bool | None
+
+
+def _validate_filter(filter_name: str) -> str:
+    """Return the filter, or raise ValueError naming the field."""
+    if filter_name not in FILTERS:
+        raise ValueError(
+            f"filter must be one of {', '.join(repr(f) for f in FILTERS)}, "
+            f"got {filter_name!r}"
+        )
+    return filter_name
+
+
+def _validate_range(start_date: str, end_date: str) -> tuple[str, str]:
+    """Validate the closed range and return it, else raise naming the field.
+
+    Both bounds must be strict ``YYYY-MM-DD`` dates (the shared
+    :func:`~.dao_rules._validate_date`, so non-padded or re-ordered
+    shapes are rejected and a non-string raises naming the field) and
+    ``end`` must be on or after ``start``.
+    """
+    _validate_date(start_date, "start")
+    _validate_date(end_date, "end")
+    if end_date < start_date:
+        raise ValueError(
+            f"end must be on or after start, got {end_date!r} < "
+            f"{start_date!r}"
+        )
+    return start_date, end_date
+
+
+def _resolve_today(today: datetime.date | None) -> datetime.date:
+    """Return the threaded HA-local date, or the host calendar date."""
+    if today is None:
+        return datetime.date.today()
+    return today
+
+
+def _event_actor(
+    event: CompletionEventRecord, actor_child: ChildRecord | None
+) -> str:
+    """Return the spec-meta actor string for one stored event.
+
+    A user event reports the ``actor_user_id`` string (the spec's
+    ``uncompleted · joshua (admin)`` shape); a panel event reports
+    ``panel (Child)`` naming the tapped profile.  The tapped child is
+    never hard-deleted, so the lookup below is a belt-and-braces
+    fallback to the stored id, never a silent rewrite of policy.
+    """
+    if event.actor_source == "user":
+        return event.actor_user_id or ""
+    if actor_child is not None:
+        return f"panel ({actor_child.display_name})"
+    return f"panel ({event.actor_child_id})"
+
+
+def _event_row(
+    event: CompletionEventRecord,
+    instance: QuestInstanceRecord,
+    child: ChildRecord,
+    quest_title: str,
+    actor_child: ChildRecord | None,
+) -> HistoryRow:
+    """Join one stored event with its instance, child and definition."""
+    return HistoryRow(
+        occurred_at=event.occurred_at,
+        event_type=event.event_type,
+        child_name=child.display_name,
+        child_id=event.child_id,
+        quest_title=quest_title,
+        instance_id=event.instance_id,
+        window=instance.window,
+        due_date=instance.due_date,
+        due_time=instance.due_time,
+        actor=_event_actor(event, actor_child),
+        was_on_time=event.was_on_time,
+    )
+
+
+def _missed_row(
+    instance: QuestInstanceRecord,
+    child: ChildRecord,
+    quest_title: str,
+) -> HistoryRow:
+    """Build the derived row for one past-due open instance."""
+    return HistoryRow(
+        occurred_at=None,
+        event_type=EVENT_MISSED,
+        child_name=child.display_name,
+        child_id=instance.child_id,
+        quest_title=quest_title,
+        instance_id=instance.id,
+        window=instance.window,
+        due_date=instance.due_date,
+        due_time=instance.due_time,
+        actor=ACTOR_NIGHTLY_SWEEP,
+        was_on_time=None,
+    )
+
+
+def _csv_values(row: HistoryRow) -> list[str]:
+    """Return one CSV row's cell values in :data:`CSV_COLUMNS` order.
+
+    ``None`` cells serialize as empty (a missed row has no
+    ``occurred_at``); ``was_on_time`` serializes as ``true``/``false``
+    when the event carries the flag and empty when it does not.
+    """
+    return [
+        row.occurred_at or "",
+        row.event_type,
+        row.child_name,
+        str(row.child_id),
+        row.quest_title,
+        str(row.instance_id),
+        row.window,
+        row.due_date,
+        row.due_time or "",
+        row.actor,
+        "" if row.was_on_time is None else str(row.was_on_time).lower(),
+    ]
+
+
+def rows_to_csv(rows: list[HistoryRow]) -> str:
+    """Serialize history rows to CSV text with the documented header.
+
+    The FIRST row is always :data:`CSV_COLUMNS`, so the header is
+    stable and deterministic; the :mod:`csv` module handles quoting
+    (titles or names containing commas or quotes are quoted per RFC
+    4180) and CRLF line endings.
+    """
+    buffer = io.StringIO()
+    writer = csv.writer(buffer)
+    writer.writerow(CSV_COLUMNS)
+    for row in rows:
+        writer.writerow(_csv_values(row))
+    return buffer.getvalue()
+
+
+async def query_history(
+    database: NestQuestDatabase,
+    filter_name: str,
+    start_date: str,
+    end_date: str,
+    *,
+    today: datetime.date | None = None,
+) -> list[HistoryRow]:
+    """Return the history rows for ``filter_name`` over the closed range.
+
+    Validates the filter and the strict ``YYYY-MM-DD`` range (raising
+    ``ValueError`` naming ``filter`` / ``start`` / ``end``) BEFORE any
+    read, then builds the rows:
+
+    - ``all`` / ``reversals``: every child's events whose instances are
+      due in the range (:meth:`~.dao_instances.CompletionEventsDao.list_by_child_and_date_range`,
+      the Feature 13 due-date scope), ``reversals`` keeping only the
+      ``uncompleted`` rows.
+    - ``missed``: :func:`~.completion.list_missed_for_child` per child —
+      the SAME derived-state rule the coordinator uses, never a new one,
+      and never a stored event.
+
+    Rows are ordered deterministically by ``due_date``, then instance,
+    then event id (the per-instance append order, so a completion and
+    its reversal keep their order).  ``today`` pins the HA-local date
+    the missed derivation compares due dates against (the host calendar
+    date when omitted).  The whole read runs under the task-reentrant
+    connection lock — :func:`list_missed_for_child` re-enters it — so
+    one answer is one snapshot.
+    """
+    filter_name = _validate_filter(filter_name)
+    start_date, end_date = _validate_range(start_date, end_date)
+    today_date = _resolve_today(today)
+
+    keyed: list[tuple[tuple[str, int, int], HistoryRow]] = []
+    async with _reentrant_connection_lock(database):
+        children = await ChildrenDao(database).list_all()
+        children_by_id = {child.id: child for child in children}
+        instances = QuestInstancesDao(database)
+        definitions = QuestDefinitionsDao(database)
+        events = CompletionEventsDao(database)
+        titles: dict[int, str] = {}
+
+        if filter_name == FILTER_MISSED:
+            for child in children:
+                for instance in await list_missed_for_child(
+                    database, child.id, start_date, end_date, today=today_date
+                ):
+                    if instance.definition_id not in titles:
+                        definition = await definitions.get(
+                            instance.definition_id
+                        )
+                        assert definition is not None, (
+                            "a materialized instance's definition exists"
+                        )
+                        titles[instance.definition_id] = definition.title
+                    keyed.append(
+                        (
+                            (instance.due_date, instance.id, 0),
+                            _missed_row(
+                                instance,
+                                child,
+                                titles[instance.definition_id],
+                            ),
+                        )
+                    )
+            keyed.sort(key=lambda pair: pair[0])
+            return [row for _, row in keyed]
+
+        for child in children:
+            for event in await events.list_by_child_and_date_range(
+                child.id, start_date, end_date
+            ):
+                if filter_name == FILTER_REVERSALS and (
+                    event.event_type != EVENT_UNCOMPLETED
+                ):
+                    continue
+                instance = await instances.get_by_id(event.instance_id)
+                assert instance is not None, (
+                    "an event's instance is never deleted (append-only "
+                    "history keeps its references)"
+                )
+                actor_child = (
+                    children_by_id.get(event.actor_child_id)
+                    if event.actor_child_id is not None
+                    else None
+                )
+                if instance.definition_id not in titles:
+                    definition = await definitions.get(instance.definition_id)
+                    assert definition is not None, (
+                        "a materialized instance's definition exists"
+                    )
+                    titles[instance.definition_id] = definition.title
+                keyed.append(
+                    (
+                        (instance.due_date, instance.id, event.id),
+                        _event_row(
+                            event,
+                            instance,
+                            child,
+                            titles[instance.definition_id],
+                            actor_child,
+                        ),
+                    )
+                )
+        keyed.sort(key=lambda pair: pair[0])
+        return [row for _, row in keyed]
+
+
+async def export_history_csv(
+    database: NestQuestDatabase,
+    filter_name: str,
+    start_date: str,
+    end_date: str,
+    *,
+    today: datetime.date | None = None,
+) -> str:
+    """Return the filtered history as CSV text, header row included.
+
+    ONE query + serialization call so the CSV export carries exactly
+    the JSON query's filtered range and order — the same
+    :func:`query_history` validation, rows and :func:`rows_to_csv`
+    serializer, never a second implementation.
+    """
+    rows = await query_history(
+        database, filter_name, start_date, end_date, today=today
+    )
+    return rows_to_csv(rows)
+
+
+__all__ = [
+    "ACTOR_NIGHTLY_SWEEP",
+    "CSV_COLUMNS",
+    "EVENT_MISSED",
+    "EVENT_UNCOMPLETED",
+    "FILTERS",
+    "FILTER_ALL",
+    "FILTER_MISSED",
+    "FILTER_REVERSALS",
+    "HistoryRow",
+    "export_history_csv",
+    "query_history",
+    "rows_to_csv",
+]

custom_components/nestquest/core/materialize.py

@@ -0,0 +1,377 @@
+"""The materialization walk (Feature 07 core).
+
+:func:`materialize` turns the schedule rules + custody presence of the
+active quest definitions into concrete ``quest_instances`` rows over a
+date range.  It is the pure walk over definitions x dates x assignees x
+windows; HA scheduling (day-rollover triggers) is a separate later
+task and lives elsewhere.
+
+The walk is deterministic and idempotent:
+
+- All inputs — the active definitions with their rules, assignees and
+  windows, AND the assignee children's presence schedules and scoped
+  overrides — are read inside ONE locked transaction (see
+  :func:`~.dao_rules.load_materialization_input`), so the walk sees a
+  single coherent snapshot rather than a definition state from one
+  instant and a presence state from another.
+- Presence is snapshotted into an immutable
+  :class:`~.presence.PresenceEngine` from that same coherent read.
+- For each date in the range, each definition whose decoded rule
+  :func:`~.recurrence.occurs_on` on that date, each assignee who is
+  ``is_present`` on that date and each declared window, one instance is
+  written through :class:`~.dao_instances.QuestInstancesDao.upsert_if_valid`
+  with a ``generated_at`` stamp shared by the whole batch (one coherent
+  time per run).
+
+A config change that lands AFTER the snapshot is read but BEFORE a
+tuple's write (an assignment removed, a definition or child deactivated,
+a window removed) makes that tuple SKIP rather than abort the batch:
+:meth:`~.dao_instances.QuestInstancesDao.upsert_if_valid` re-validates
+every materialization precondition (active definition, active child,
+live assignment, declared window, and its CURRENT ``due_time``) inside
+the SAME transaction as the INSERT, so the check and the write cannot be
+split by a racing config edit.
+
+The upsert is idempotent on (definition_id, child_id, due_date,
+window), so re-running the materialization over the same range never
+duplicates a row; a tuple whose instance is already completed is SKIPPED
+(never rewritten, never raised) by
+:meth:`~.dao_instances.QuestInstancesDao.upsert_if_valid`.
+
+Regeneration: a config or presence change must rebuild future instances
+so they track the new state.  :func:`regenerate_for_definition` covers
+definition edits / reassignment (Features 06/07); :func:`regenerate_for_child`
+covers a single child's presence change (Feature 09).  Both delete the
+affected open instances at or after today — never a completed instance,
+never the past — and re-run the walk over the rolling horizon
+``[today, today + horizon_days]`` (``horizon_days`` defaults to
+``DEFAULT_HORIZON_DAYS``).
+
+HOOK (Feature 09 presence services): the presence business layer that
+lands in Feature 09 MUST call :func:`regenerate_for_child` after EVERY
+presence-state write so a child's future instances track its presence:
+``set_presence_pattern`` (including clearing/setting an empty pattern),
+deleting/clearing the presence schedule
+(:meth:`~.dao_presence.PresenceSchedulesDao.delete`),
+``create_presence_override``, and ``delete_presence_override``.  A
+schedule delete changes presence state too (the child becomes
+always-present), so it must regenerate just like the others.  This hook
+is documented, not yet wired: no presence business layer exists yet, and
+the presence DAO (``dao_presence.py``) must stay free of business rules
+— never call :func:`regenerate_for_child` from inside the DAO layer.
+"""
+from __future__ import annotations
+
+import datetime
+
+from .const import DEFAULT_HORIZON_DAYS
+from .dao_instances import QuestInstancesDao, _resolve_today
+from .dao_rules import (
+    _validate_date,
+    load_materialization_input,
+    schedule_rule_from_storage,
+    schedule_rule_storage_from_record,
+)
+from .db import NestQuestDatabase
+from .presence import PresenceEngine, PresenceOverride, PresenceSchedule
+from .recurrence import ScheduleRule, occurs_on
+
+
+def _now_stamp() -> str:
+    """Return the batch's shared UTC second-precision generation stamp."""
+    return datetime.datetime.now(datetime.timezone.utc).isoformat(
+        timespec="seconds"
+    )
+
+
+def _resolve_horizon_days(horizon_days: int | None) -> int:
+    """Validate a regeneration horizon and return the resolved day count.
+
+    ``None`` resolves to :data:`~.const.DEFAULT_HORIZON_DAYS`.  A bool
+    (SQLite would happily bind ``True``/``False`` onto an int), a non-int,
+    or a value below 1 raises ValueError naming the field — the validation
+    runs BEFORE any future-instance delete so a malformed horizon can never
+    delete rows it then fails to rebuild.  A negative horizon would
+    otherwise delete first and only then be rejected by
+    :func:`materialize`'s inverted-range check; ``0``/``False`` would
+    silently shrink the window to a single day.
+    """
+    if horizon_days is None:
+        return DEFAULT_HORIZON_DAYS
+    if (
+        isinstance(horizon_days, bool)
+        or not isinstance(horizon_days, int)
+        or horizon_days < 1
+    ):
+        raise ValueError(
+            f"horizon_days must be a positive integer, got {horizon_days!r}"
+        )
+    return horizon_days
+
+
+def _decode_rule(snapshot) -> ScheduleRule:
+    """Decode a snapshot's rule record back into a ScheduleRule.
+
+    The record carried by the snapshot is the one the definition
+    referenced at read time, so decoding it here (rather than re-reading
+    through ``ScheduleRulesDao``) preserves the coherence the snapshot
+    guarantees.
+    """
+    return schedule_rule_from_storage(
+        schedule_rule_storage_from_record(snapshot.rule)
+    )
+
+
+def _build_engine(
+    schedules_records,
+    overrides_records,
+) -> PresenceEngine:
+    """Convert raw presence records into an immutable PresenceEngine."""
+    schedules: dict[int, PresenceSchedule] = {}
+    for child_id, record in schedules_records.items():
+        schedules[child_id] = PresenceSchedule.decode(
+            child_id, record.anchor_date, record.pattern
+        )
+    overrides: dict[int, list[PresenceOverride]] = {}
+    for child_id, records in overrides_records.items():
+        overrides[child_id] = [
+            PresenceOverride(
+                record.child_id,
+                record.start_date,
+                record.end_date,
+                record.is_present,
+                record.note,
+            )
+            for record in records
+        ]
+    return PresenceEngine(schedules, overrides)
+
+
+async def materialize(
+    database: NestQuestDatabase,
+    start_date: str,
+    end_date: str,
+    *,
+    child_ids: list[int] | None = None,
+    today: datetime.date | None = None,
+) -> int:
+    """Generate quest instances for the closed range [start_date, end_date].
+
+    ``start_date`` and ``end_date`` must be strict ISO calendar dates
+    (YYYY-MM-DD) with ``end_date`` on or after ``start_date``; anything
+    else raises ValueError naming the offending field.  Returns the number
+    of instances upserted for the range (idempotent — a re-run refreshes
+    the same rows, never duplicates them).
+
+    ``child_ids`` optionally scopes the walk to exactly those children:
+    assignees outside the list are never written, so a caller that only
+    wants one child's instances rebuilt (e.g. :func:`regenerate_for_child`
+    after a presence change) cannot touch any unrelated child's rows.
+    When omitted (or None) the walk covers every assignee as before.
+
+    ``today`` optionally pins the resolved HA-local date the walk's
+    no-past guard compares against; it is threaded into every
+    :meth:`~.dao_instances.QuestInstancesDao.upsert_if_valid` write.  When
+    omitted the host clock (``datetime.date.today``) is used, which is the
+    historical default.  A caller that computed the horizon in Home
+    Assistant's configured time zone MUST pass that same date here so a
+    time zone behind the host around midnight is not rejected as "past".
+
+    ``start_date`` is clamped up to the resolved "today" (the same
+    ``today`` anchor threaded into the no-past guard), so a caller that
+    passes a ``start_date`` already in the past never yields a
+    past-dated instance: the walk simply begins on today and skips every
+    earlier date.  A range entirely in the past therefore produces zero
+    instances rather than an error, and the DAO's no-past guard remains
+    the authoritative backstop under the lock.
+
+    All inputs are read in ONE locked transaction; each tuple's write then
+    goes through the atomic :meth:`~.dao_instances.QuestInstancesDao.upsert_if_valid`,
+    which re-validates the tuple and its current ``due_time`` in the same
+    transaction as the INSERT, so a config change that arrives mid-batch
+    skips the affected tuples rather than aborting the batch or leaving a
+    partial result.
+    """
+    _validate_date(start_date, "start_date")
+    _validate_date(end_date, "end_date")
+    if end_date < start_date:
+        raise ValueError(
+            f"end_date must be on or after start_date, got "
+            f"{end_date!r} < {start_date!r}"
+        )
+
+    snapshots, schedules_records, overrides_records = await (
+        load_materialization_input(database, start_date, end_date)
+    )
+    engine = _build_engine(schedules_records, overrides_records)
+    child_filter = None if child_ids is None else set(child_ids)
+
+    definitions = [
+        (snapshot.definition.id, _decode_rule(snapshot),
+         snapshot.assignees, snapshot.windows)
+        for snapshot in snapshots
+    ]
+
+    generated_at = _now_stamp()
+    instances = QuestInstancesDao(database)
+
+    start = datetime.datetime.strptime(start_date, "%Y-%m-%d").date()
+    end = datetime.datetime.strptime(end_date, "%Y-%m-%d").date()
+
+    # Clamp a past start up to today (the HA-local anchor when the caller
+    # pinned one, else the host clock) so the walk can never emit a
+    # past-dated instance; the DAO's no-past guard remains the backstop.
+    # A range entirely in the past therefore yields zero instances.
+    today_date = _resolve_today(today)
+    start = max(start, today_date)
+
+    count = 0
+    cursor = start
+    while cursor <= end:
+        iso = cursor.isoformat()
+        for definition_id, rule, assignees, windows in definitions:
+            if not occurs_on(rule, cursor):
+                continue
+            for child in assignees:
+                if child_filter is not None and child.id not in child_filter:
+                    continue
+                if not engine.is_present(child.id, cursor):
+                    continue
+                for window in windows:
+                    written = await instances.upsert_if_valid(
+                        definition_id,
+                        child.id,
+                        iso,
+                        generated_at,
+                        window=window.window,
+                        due_time=window.due_time,
+                        today=today,
+                    )
+                    if written is not None:
+                        count += 1
+        cursor += datetime.timedelta(days=1)
+    return count
+
+
+async def regenerate_for_definition(
+    database: NestQuestDatabase,
+    definition_id: int,
+    *,
+    today: datetime.date | None = None,
+    horizon_days: int | None = None,
+) -> int:
+    """Regenerate a definition's future instances after a config change.
+
+    The Feature 06 edit/assignment/activation paths call this after a
+    successful write so future instances track the new state: the
+    definition's open instances at or after today are deleted (never a
+    completed instance, never the past) via
+    :meth:`~.dao_instances.QuestInstancesDao.delete_future_uncompleted`,
+    then the materialization walk re-runs over the rolling horizon
+    ``[today, today + horizon_days]`` so the (changed) rule,
+    assignee set and windows re-materialize against today's state.
+
+    "today" is computed the same way the walk computes it —
+    :func:`~.dao_instances._today` — so the delete cutoff and the
+    re-materialization range share one anchor, and the walk's
+    ``upsert_if_valid`` no-past guard never rejects the regenerated
+    range.  ``today`` optionally pins a caller-resolved HA-local date
+    (threaded into both the delete cutoff and the re-materialization)
+    so a household time zone behind the host around midnight stays
+    consistent.  ``horizon_days`` sizes the re-materialization window;
+    when omitted it falls back to :data:`~.const.DEFAULT_HORIZON_DAYS`.
+    A bool, non-int, or sub-1 value raises ValueError BEFORE any delete.
+    Returns the number of instances the re-materialization
+    upserted across the whole snapshot (idempotent — other active
+    definitions' tuples refresh in place, never duplicate).
+    """
+    horizon = _resolve_horizon_days(horizon_days)
+    today_date = _resolve_today(today)
+    start_date = today_date.isoformat()
+    end_date = (
+        today_date + datetime.timedelta(days=horizon)
+    ).isoformat()
+
+    instances = QuestInstancesDao(database)
+    await instances.delete_future_uncompleted(
+        definition_id, start_date, today=today
+    )
+    return await materialize(database, start_date, end_date, today=today)
+
+
+# HOOK (Feature 09 presence services): ``regenerate_for_child`` is the
+# child-presence counterpart to ``regenerate_for_definition``.  The
+# presence business layer that lands in Feature 09 MUST call
+# ``regenerate_for_child`` after EVERY presence-state write, so future
+# instances track a child's changed presence: set_presence_pattern
+# (including clearing/setting an empty pattern), deleting/clearing the
+# presence schedule (PresenceSchedulesDao.delete),
+# create_presence_override, and delete_presence_override.  A schedule
+# delete changes presence state too (the child becomes always-present),
+# so it must regenerate just like the others.  It is deliberately NOT
+# wired into ``dao_presence.py``: the DAO layer stays pure storage (no
+# business rules), and no presence business layer exists yet to host the
+# call — see the module docstring note above.
+async def regenerate_for_child(
+    database: NestQuestDatabase,
+    child_id: int,
+    *,
+    today: datetime.date | None = None,
+    horizon_days: int | None = None,
+) -> int:
+    """Regenerate a child's future instances after a presence change.
+
+    The Feature 09 presence services call this after every
+    presence-state write — set_presence_pattern (including clearing or
+    setting an empty pattern), deleting/clearing the presence schedule
+    (:meth:`~.dao_presence.PresenceSchedulesDao.delete`),
+    create_presence_override, and delete_presence_override — so a
+    child's future instances track its new presence: the child's open
+    instances at or after today are deleted across ALL its definitions
+    (never a completed instance, never the past) via
+    :meth:`~.dao_instances.QuestInstancesDao.delete_future_uncompleted_for_child`,
+    then the materialization walk re-runs over the rolling horizon
+    ``[today, today + horizon_days]`` scoped to that child only,
+    so the child's now-absent/present dates re-materialize against
+    today's presence WITHOUT touching any other child's rows.
+
+    ``child_id`` must be a plain int — bool and float are rejected
+    (SQLite binds a bool as 0/1 and a float would round, so a malformed
+    id must never mutate the wrong profile).
+
+    "today" is computed the same way the walk computes it —
+    :func:`~.dao_instances._today` — and the re-materialization range uses the
+    delete's returned effective cutoff (see
+    :meth:`~.dao_instances.QuestInstancesDao.delete_future_uncompleted_for_child`),
+    so the delete cutoff and the re-materialization window share ONE
+    execution-day anchor even when the call is queued across midnight.
+    ``today`` optionally pins a caller-resolved HA-local date, threaded
+    into the delete cutoff and the re-materialization for the same
+    host-vs-HA time-zone consistency.  ``horizon_days`` sizes the
+    re-materialization window; when omitted it falls back to
+    :data:`~.const.DEFAULT_HORIZON_DAYS`.  A bool, non-int, or sub-1 value
+    raises ValueError BEFORE any delete.  Returns the number of instances
+    the re-materialization upserted for the child across the whole
+    snapshot.
+    """
+    if isinstance(child_id, bool) or not isinstance(child_id, int):
+        raise ValueError(f"child_id must be an integer, got {child_id!r}")
+
+    horizon = _resolve_horizon_days(horizon_days)
+    today_date = _resolve_today(today)
+
+    instances = QuestInstancesDao(database)
+    # Use the delete's returned effective cutoff as the materialize anchor,
+    # NOT the independently-computed "today" above.  If the call is queued
+    # across midnight the delete clamps its cutoff to the execution-day;
+    # materializing from the stale "today" (now yesterday) would trip the
+    # walk's no-past guard and leave the child's future instances deleted
+    # but not rebuilt.  One anchor for both keeps them consistent.
+    _, effective_cutoff = await instances.delete_future_uncompleted_for_child(
+        child_id, today_date.isoformat(), today=today
+    )
+    start = datetime.date.fromisoformat(effective_cutoff)
+    end_date = (start + datetime.timedelta(days=horizon)).isoformat()
+    return await materialize(
+        database, start.isoformat(), end_date, child_ids=[child_id], today=today
+    )

custom_components/nestquest/core/migrations.py

@@ -24,9 +24,16 @@ names before anything else assumes the new model.  Migration 3 brings
 pre-D-008 databases to the multi-assignee model: it creates
 ``quest_definition_assignees`` and, when ``quest_definitions`` still
 carries a single ``child_id`` column, rebuilds the table without it,
-copying each definition's assignee across.  Each callable migration
-runs inside its own transaction together with its version stamp, so a
-crash mid-step rolls the statements and the stamp back together.
+copying each definition's assignee across.  Migration 4 adds the
+windows table, migration 5 rebuilds ``quest_instances`` onto the
+widened (definition_id, child_id, due_date, window) key, and migration
+6 rebuilds ``completion_events`` with the D-008 ``actor_child_id``
+column.  Migration 7 adds the generic ``nestquest_meta_state``
+key/value table for integration-owned bookkeeping (Feature 11's
+missed-sweep watermark).  Each callable migration runs inside its own
+transaction
+together with its version stamp, so a crash mid-step rolls the
+statements and the stamp back together.
 
 Migration entries are either an ordered sequence of SQL statements or
 an async callable taking ``(database, target_version)``.  Callables
@@ -70,10 +77,13 @@ from typing import Union
 
 from .db import NestQuestDatabase
 from .schema import (
+    COMPLETION_EVENTS_TABLE_SQL,
     QUEST_DEFINITIONS_TABLE_SQL,
+    QUEST_INSTANCES_TABLE_SQL,
     SCHEMA_V1_STATEMENTS,
     SCHEMA_V1_QUEST_DEFINITION_ASSIGNEES_DDL,
     SCHEMA_V1_QUEST_DEFINITION_WINDOWS_DDL,
+    SCHEMA_V7_META_STATE_DDL,
 )
 
 LOGGER = logging.getLogger(__name__)
@@ -147,6 +157,14 @@ async def _table_has_column(
     return any(row[1] == column for row in rows)
 
 
+#: Window assigned to instances migrated from the pre-window instance
+#: shape (D-008).  Pre-window rows were generated for whole-day
+#: obligations; the morning window is the documented default landing
+#: spot, and future dates are regenerated with real window declarations
+#: by materialization (delete_future_uncompleted + re-run).
+LEGACY_MIGRATED_WINDOW = "morning"
+
+
 async def _rename_legacy_task_tables(
     database: NestQuestDatabase, target_version: int
 ) -> None:
@@ -250,6 +268,138 @@ async def _add_definition_assignees(
         await database.execute("PRAGMA foreign_keys = ON")
 
 
+async def _widen_instance_key(
+    database: NestQuestDatabase, target_version: int
+) -> None:
+    """Bring ``quest_instances`` to the D-008 instance key.
+
+    Databases whose instance table still carries the pre-window shape
+    (no ``window`` column, UNIQUE on (definition_id, due_date)) are
+    rebuilt via SQLite's canonical procedure into the widened shape —
+    UNIQUE (definition_id, child_id, due_date, window) — with every
+    migrated row landing in :data:`LEGACY_MIGRATED_WINDOW` so existing
+    ids (and the completion events referencing them) survive intact.
+    The old rows were unique per (definition, due_date), so pinning one
+    window cannot collide with the widened key.  Fresh databases whose
+    table already matches the canonical shape only stamp.
+
+    The rebuild runs with ``foreign_keys = OFF`` (dropping the old
+    table under enforcement would fire the implicit DELETE and violate
+    the ``completion_events`` foreign key) and verifies
+    ``PRAGMA foreign_key_check`` inside the transaction before the
+    stamp, so a corrupt copy aborts the whole migration.
+    """
+    legacy_shape = not await _table_has_column(
+        database, "quest_instances", "window"
+    )
+    await database.execute("PRAGMA foreign_keys = OFF")
+    try:
+        async with database.transaction():
+            if legacy_shape:
+                await database.execute(
+                    "CREATE TABLE quest_instances_rebuilt "
+                    f"{QUEST_INSTANCES_TABLE_SQL}"
+                )
+                await database.execute(
+                    "INSERT INTO quest_instances_rebuilt "
+                    "(id, definition_id, child_id, window, due_date, "
+                    "due_time, generated_at) "
+                    "SELECT id, definition_id, child_id, ?, due_date, "
+                    "due_time, generated_at "
+                    "FROM quest_instances ORDER BY id",
+                    (LEGACY_MIGRATED_WINDOW,),
+                )
+                await database.execute("DROP TABLE quest_instances")
+                await database.execute(
+                    "ALTER TABLE quest_instances_rebuilt "
+                    "RENAME TO quest_instances"
+                )
+                violations = await database.fetch_all(
+                    "PRAGMA foreign_key_check"
+                )
+                if violations:
+                    raise RuntimeError(
+                        "instance rebuild produced foreign-key "
+                        f"violations: {violations!r}"
+                    )
+                LOGGER.info(
+                    "Widened quest_instances key; migrated rows pinned "
+                    "to the %r window",
+                    LEGACY_MIGRATED_WINDOW,
+                )
+            await stamp_schema_version(database, target_version)
+    finally:
+        await database.execute("PRAGMA foreign_keys = ON")
+
+
+async def _add_actor_child_id(
+    database: NestQuestDatabase, target_version: int
+) -> None:
+    """Bring ``completion_events`` to the D-008 actor-child shape.
+
+    The ``actor_child_id`` column records which panel profile was
+    tapped; it cannot be added with ``ALTER TABLE ADD COLUMN`` alone
+    because the canonical shape also carries an actor-pair coherence
+    CHECK (panel events require it, user events forbid it), and CHECK
+    constraints cannot be added to an existing table.  Databases with
+    the legacy shape are therefore rebuilt via SQLite's canonical
+    procedure, backfilling each legacy panel row's ``actor_child_id``
+    to ``child_id`` — pre-D-008 panel completions were always recorded
+    against the tapped child themselves — while admin rows stay NULL.
+    Row ids are preserved so ``quest_instances`` references and the
+    append-only history stay intact.  Fresh databases already match
+    the canonical shape and only stamp.
+
+    The rebuild runs with ``foreign_keys = OFF`` and verifies
+    ``PRAGMA foreign_key_check`` inside the transaction before the
+    stamp.  The copy is an INSERT..SELECT, not an UPDATE: the
+    completion_events table keeps its append-only guarantee.
+    """
+    legacy_shape = not await _table_has_column(
+        database, "completion_events", "actor_child_id"
+    )
+    await database.execute("PRAGMA foreign_keys = OFF")
+    try:
+        async with database.transaction():
+            if legacy_shape:
+                await database.execute(
+                    "CREATE TABLE completion_events_rebuilt "
+                    f"{COMPLETION_EVENTS_TABLE_SQL}"
+                )
+                await database.execute(
+                    "INSERT INTO completion_events_rebuilt "
+                    "(id, instance_id, child_id, event_type, actor_source, "
+                    "actor_user_id, actor_child_id, occurred_at, "
+                    "was_on_time) "
+                    "SELECT id, instance_id, child_id, event_type, "
+                    "actor_source, actor_user_id, "
+                    "CASE WHEN actor_source = 'panel' THEN child_id "
+                    "ELSE NULL END, "
+                    "occurred_at, was_on_time "
+                    "FROM completion_events ORDER BY id"
+                )
+                await database.execute("DROP TABLE completion_events")
+                await database.execute(
+                    "ALTER TABLE completion_events_rebuilt "
+                    "RENAME TO completion_events"
+                )
+                violations = await database.fetch_all(
+                    "PRAGMA foreign_key_check"
+                )
+                if violations:
+                    raise RuntimeError(
+                        "completion_events rebuild produced foreign-key "
+                        f"violations: {violations!r}"
+                    )
+                LOGGER.info(
+                    "Added actor_child_id to completion_events; legacy "
+                    "panel rows backfilled to their own child_id"
+                )
+            await stamp_schema_version(database, target_version)
+    finally:
+        await database.execute("PRAGMA foreign_keys = ON")
+
+
 #: The ordered migration list.  Append-only: never edit an applied
 #: entry, add the next one instead.  (Migration 1's content was
 #: rewritten pre-release per D-007 — no version 1 database shipped.)
@@ -261,6 +411,18 @@ MIGRATIONS: Sequence[MigrationStep] = [
     # CREATE IF NOT EXISTS suffices for both fresh databases (which
     # already made it in migration 1) and pre-window databases.
     list(SCHEMA_V1_QUEST_DEFINITION_WINDOWS_DDL),
+    # Migration 5 (D-008): rebuild quest_instances onto the widened
+    # (definition_id, child_id, due_date, window) key.
+    _widen_instance_key,
+    # Migration 6 (D-008): rebuild completion_events with the
+    # actor_child_id column and its actor-pair coherence CHECK,
+    # backfilling legacy panel rows to their own child_id.
+    _add_actor_child_id,
+    # Migration 7 (Feature 11): the generic meta_state key/value table
+    # — a plain new table, so CREATE IF NOT EXISTS suffices for both
+    # fresh databases (which already made it in migration 1) and
+    # pre-v7 databases.  Strictly additive; no existing table changes.
+    list(SCHEMA_V7_META_STATE_DDL),
 ]
 
 

custom_components/nestquest/core/presence.py

@@ -0,0 +1,477 @@
+"""The presence and custody model (Feature 05).
+
+PURE module: no Home Assistant imports, no database access, no
+timezone logic — it operates on plain calendar dates only (feature
+guardrail).  The later engine (cycle position, ``is_present``,
+overrides, previews) builds directly on this model.
+
+A :class:`PresenceSchedule` answers "on which weekdays of which cycle
+week is this child at this house?" for an N-week repeating custody
+pattern.  Two of the household's three children follow a two-week
+rotation; a child with NO schedule row is present every day (that
+default lives in the engine, not here).
+
+Pattern encoding: the model's canonical serialization is the SAME
+pipe-separated CSV the database stores (see schema.py's
+``presence_schedules.pattern``): segment ``i`` (week index ``i``) is a
+comma-separated list of present weekdays, 0 = Monday .. 6 = Sunday,
+e.g. ``'0,2,4|1,3'`` = Mon/Wed/Fri in week 0, Tue/Thu in week 1.  An
+empty segment means absent every day of that week.  Encoding sorts
+each segment's weekdays and uses the exact segment order, so
+``decode(encode(schedule))`` round-trips losslessly and two schedules
+with equal patterns produce equal strings.
+
+Anchor-date policy: ``anchor_date`` pins the cycle.  Cycle position is
+computed from anchor-date arithmetic ONLY — never ISO week numbers or
+week parity (D-004): 53-week years silently invert parity on January
+1st.  The arithmetic lives in the engine task; this module validates
+that the anchor is a strict calendar date.
+
+Validation policy: construction is total — every reject happens in
+``__init__`` so no invalid schedule can ever exist:
+- ``cycle_length_weeks`` must be an integer 1..4.  The 4 cap matches
+  the database CHECK (schema.py) and keeps anchor arithmetic and the
+  encoded pattern human-readable; revisit both together if a longer
+  cycle is ever needed.
+- ``pattern`` must cover week indices 0..cycle_length_weeks-1 exactly
+  (no gaps, no extra weeks) with sets of integers 0..6 (bools
+  rejected: True would silently mean Monday).
+- ``anchor_date`` must be a strict ISO YYYY-MM-DD calendar date (or a
+  ``datetime.date``).
+"""
+from __future__ import annotations
+
+import datetime
+from dataclasses import dataclass
+from types import MappingProxyType
+
+#: The schema's documented cap for cycle_length_weeks (schema.py keeps
+#: the pattern human-readable and the anchor arithmetic small).
+MAX_CYCLE_LENGTH_WEEKS = 4
+
+_DATE_FORMAT = "%Y-%m-%d"
+
+
+def _parse_date(value: object, field_name: str) -> datetime.date:
+    """Accept a datetime.date or a strict YYYY-MM-DD string.
+
+    ``datetime.datetime`` is rejected explicitly: it SUBCLASSES
+    datetime.date, so a bare isinstance check would store a value with
+    a time component and every later calendar-date comparison (e.g.
+    ``PresenceOverride.covers``) would raise TypeError.
+    """
+    if isinstance(value, datetime.datetime):
+        raise ValueError(
+            f"{field_name} must be a plain calendar date, not a "
+            f"datetime with a time component: {value!r}"
+        )
+    if isinstance(value, datetime.date):
+        return value
+    if not isinstance(value, str):
+        raise ValueError(
+            f"{field_name} must be a datetime.date or an ISO date string, "
+            f"got {value!r}"
+        )
+    try:
+        parsed = datetime.datetime.strptime(value, _DATE_FORMAT).date()
+    except (TypeError, ValueError):
+        raise ValueError(
+            f"{field_name} must be an ISO date (YYYY-MM-DD), got {value!r}"
+        ) from None
+    if parsed.isoformat() != value:
+        raise ValueError(
+            f"{field_name} must be a strict YYYY-MM-DD date, got {value!r}"
+        )
+    return parsed
+
+
+def _validate_week_index(week: object, cycle_length_weeks: int) -> int:
+    """Reject non-int week indices (bools included) and out-of-cycle."""
+    if isinstance(week, bool) or not isinstance(week, int):
+        raise ValueError(
+            f"pattern week index must be an integer, got {week!r}"
+        )
+    if not 0 <= week < cycle_length_weeks:
+        raise ValueError(
+            f"pattern week index must be in 0..{cycle_length_weeks - 1}, "
+            f"got {week}"
+        )
+    return week
+
+
+def _validate_weekday_set(week: int, weekdays: object) -> frozenset[int]:
+    """Validate one week's present-weekday set."""
+    if isinstance(weekdays, (str, bytes)) or weekdays is None:
+        raise ValueError(
+            f"pattern[{week}] must be an iterable of weekday ints 0..6, "
+            f"got {weekdays!r}"
+        )
+    try:
+        members = list(weekdays)
+    except TypeError:
+        raise ValueError(
+            f"pattern[{week}] must be an iterable of weekday ints 0..6, "
+            f"got {weekdays!r}"
+        ) from None
+    for member in members:
+        if isinstance(member, bool) or not isinstance(member, int):
+            raise ValueError(
+                f"pattern[{week}] weekday must be an int 0..6, got {member!r}"
+            )
+        if not 0 <= member <= 6:
+            raise ValueError(
+                f"pattern[{week}] weekday must be in 0..6 (Monday=0), "
+                f"got {member}"
+            )
+    return frozenset(members)
+
+
+def _validate_cycle_length(value: object) -> int:
+    """Reject non-int and out-of-range cycle lengths (bools included)."""
+    if isinstance(value, bool) or not isinstance(value, int):
+        raise ValueError(
+            f"cycle_length_weeks must be an integer, got {value!r}"
+        )
+    if not 1 <= value <= MAX_CYCLE_LENGTH_WEEKS:
+        raise ValueError(
+            f"cycle_length_weeks must be between 1 and "
+            f"{MAX_CYCLE_LENGTH_WEEKS}, got {value}"
+        )
+    return value
+
+
+def _validate_child_id(value: object) -> int:
+    """Reject non-int child ids (bools would silently address child 1)."""
+    if isinstance(value, bool) or not isinstance(value, int):
+        raise ValueError(f"child_id must be an integer, got {value!r}")
+    return value
+
+
+@dataclass(frozen=True, init=False)
+class PresenceSchedule:
+    """One child's N-week repeating presence pattern.
+
+    ``pattern`` maps each week index of the cycle (``0`` .. ``n-1``)
+    to the set of present weekdays (ints, Monday=0).  A week with an
+    empty set means the child is absent every day of that week — which
+    is distinct from having no schedule at all (the engine treats a
+    missing schedule as present every day).
+    """
+
+    child_id: int
+    cycle_length_weeks: int
+    anchor_date: datetime.date
+    pattern: MappingProxyType  # week index -> frozenset of weekdays
+
+    def __init__(
+        self,
+        child_id: int,
+        cycle_length_weeks: int,
+        anchor_date: object,
+        pattern: dict[int, object],
+    ) -> None:
+        object.__setattr__(self, "child_id", _validate_child_id(child_id))
+        cycle = _validate_cycle_length(cycle_length_weeks)
+        object.__setattr__(self, "cycle_length_weeks", cycle)
+        object.__setattr__(
+            self, "anchor_date", _parse_date(anchor_date, "anchor_date")
+        )
+        if not isinstance(pattern, dict):
+            raise ValueError(
+                "pattern must map week index to a set of present "
+                f"weekdays, got {pattern!r}"
+            )
+        normalised: dict[int, frozenset[int]] = {}
+        for week, weekdays in pattern.items():
+            index = _validate_week_index(week, cycle)
+            normalised[index] = _validate_weekday_set(index, weekdays)
+        missing = [
+            week for week in range(cycle) if week not in normalised
+        ]
+        if missing:
+            raise ValueError(
+                f"pattern must cover week indices 0..{cycle - 1}; "
+                f"missing {missing}"
+            )
+        # Frozen must mean frozen: a bare dict would let callers inject
+        # unvalidated weekdays (or drop required weeks) AFTER
+        # construction, bypassing total validation.  The mapping
+        # proxy exposes the validated contents read-only; the
+        # per-week sets are already frozensets.
+        object.__setattr__(self, "pattern", MappingProxyType(normalised))
+
+    def encode(self) -> str:
+        """Serialize to the database's pipe-separated CSV shape.
+
+        Segments appear in week order; each segment is the week's
+        present weekdays as a sorted comma-separated list (an empty set
+        encodes as an empty segment).  Two schedules with equal
+        patterns encode identically.
+        """
+        segments = [
+            ",".join(str(day) for day in sorted(self.pattern[week]))
+            for week in range(self.cycle_length_weeks)
+        ]
+        return "|".join(segments)
+
+    @classmethod
+    def decode(
+        cls,
+        child_id: int,
+        anchor_date: object,
+        encoded: str,
+    ) -> "PresenceSchedule":
+        """Build a schedule from its encoded pattern.
+
+        The cycle length is derived from the segment count, mirroring
+        the database's segment-count CHECK.  Decoding is strict: wrong
+        shapes, non-numeric or out-of-range weekdays are rejected —
+        the database CHECKs make such rows unrepresentable, and this
+        is the same contract on the model side.  A segment count above
+        the documented cycle cap is rejected by the ordinary
+        construction validation.
+        """
+        if not isinstance(encoded, str):
+            raise ValueError(
+                f"encoded pattern must be a string, got {encoded!r}"
+            )
+        segments = encoded.split("|")
+        pattern: dict[int, set[int]] = {}
+        for week, segment in enumerate(segments):
+            weekdays: set[int] = set()
+            if segment:
+                for part in segment.split(","):
+                    if len(part) != 1 or part not in "0123456":
+                        raise ValueError(
+                            f"encoded segment {week} carries an invalid "
+                            f"weekday {part!r} (single digits 0-6 only)"
+                        )
+                    weekdays.add(int(part))
+            pattern[week] = weekdays
+        return cls(child_id, len(segments), anchor_date, pattern)
+
+
+@dataclass(frozen=True, init=False)
+class PresenceOverride:
+    """A date-specific present/absent flag beating any pattern.
+
+    Covers a single date (``end_date == start_date``) or an inclusive
+    range.  A concrete range is the storage shape
+    (``presence_overrides.end_date`` is NOT NULL), so the model
+    requires both bounds and validates start <= end.  Construction and
+    validation live here so the engine can trust every instance.
+    """
+
+    child_id: int
+    start_date: datetime.date
+    end_date: datetime.date
+    is_present: bool
+    note: str | None
+
+    def __init__(
+        self,
+        child_id: int,
+        start_date: object,
+        end_date: object,
+        is_present: bool,
+        note: str | None = None,
+    ) -> None:
+        object.__setattr__(self, "child_id", _validate_child_id(child_id))
+        start = _parse_date(start_date, "start_date")
+        end = _parse_date(end_date, "end_date")
+        if end < start:
+            raise ValueError(
+                f"end_date must be on or after start_date, got "
+                f"{end.isoformat()} < {start.isoformat()}"
+            )
+        object.__setattr__(self, "start_date", start)
+        object.__setattr__(self, "end_date", end)
+        if not isinstance(is_present, bool):
+            raise ValueError(
+                f"is_present must be a real bool, got {is_present!r}"
+            )
+        object.__setattr__(self, "is_present", is_present)
+        if note is not None and not isinstance(note, str):
+            raise ValueError(f"note must be a string or None, got {note!r}")
+        object.__setattr__(self, "note", note)
+
+    def covers(self, date: datetime.date) -> bool:
+        """Return True when the override applies to ``date``."""
+        return self.start_date <= date <= self.end_date
+
+
+def cycle_week_index(
+    schedule: PresenceSchedule, target_date: object
+) -> int:
+    """Return the cycle week index ``target_date`` falls in.
+
+    Anchor-date arithmetic ONLY (D-004): ``((target_date -
+    anchor_date).days // 7) % cycle_length_weeks``.  Python's floor
+    division makes dates BEFORE the anchor behave correctly — they
+    walk the cycle backwards (day -1 is the last week of the cycle,
+    day -8 wraps one further) instead of inverting, which is exactly
+    what ISO week parity does wrong in 53-week years.  The modulo of
+    a negative in Python is non-negative, so the index is always a
+    valid week index.
+    """
+    target = _parse_date(target_date, "target_date")
+    days = (target - schedule.anchor_date).days
+    return (days // 7) % schedule.cycle_length_weeks
+
+
+#: Search cap for :meth:`PresenceEngine.next_present_dates`: two full
+#: years of daily checks.  A child absent every day (an all-absent
+#: pattern with a blocking override) would otherwise loop forever; the
+#: cap bounds the scan and surfaces the situation as an error instead.
+MAX_PREVIEW_SCAN_DAYS = 366 * 2
+
+
+class PresenceEngine:
+    """Answers "is this child at this house on this date?".
+
+    Pure and side-effect-free: built from an immutable snapshot of the
+    children's schedules (``child_id -> PresenceSchedule``), it never
+    touches the database — callers build a snapshot from the DAO layer
+    and pass it in.  A child with NO schedule entry is present every
+    day (the third household child's case); a child WITH a schedule is
+    present exactly when the date's weekday is in that schedule's
+    pattern for the date's cycle week index (anchor-date arithmetic —
+    :func:`cycle_week_index`, never ISO week parity).
+    """
+
+    def __init__(
+        self,
+        schedules: dict[int, PresenceSchedule],
+        overrides: dict[int, list[PresenceOverride]] | None = None,
+    ) -> None:
+        if not isinstance(schedules, dict):
+            raise ValueError(
+                f"schedules must map child_id to PresenceSchedule, got "
+                f"{schedules!r}"
+            )
+        for child_id, schedule in schedules.items():
+            # Validate the KEY as a model child id too: True and 1.0
+            # compare equal to 1, so {True: schedule(1)} would be
+            # accepted and then behave differently on lookup.
+            _validate_child_id(child_id)
+            if not isinstance(schedule, PresenceSchedule):
+                raise ValueError(
+                    f"schedules[{child_id!r}] must be a PresenceSchedule, "
+                    f"got {schedule!r}"
+                )
+            if schedule.child_id != child_id:
+                raise ValueError(
+                    f"schedules is keyed {child_id!r} but holds the "
+                    f"schedule of child {schedule.child_id}"
+                )
+        if overrides is None:
+            overrides = {}
+        if not isinstance(overrides, dict):
+            raise ValueError(
+                "overrides must map child_id to a list of "
+                f"PresenceOverride, got {overrides!r}"
+            )
+        for child_id, entries in overrides.items():
+            _validate_child_id(child_id)
+            if not isinstance(entries, list):
+                raise ValueError(
+                    f"overrides[{child_id!r}] must be a list of "
+                    f"PresenceOverride, got {entries!r}"
+                )
+            for entry in entries:
+                if not isinstance(entry, PresenceOverride):
+                    raise ValueError(
+                        f"overrides[{child_id!r}] entries must be "
+                        f"PresenceOverride, got {entry!r}"
+                    )
+                if entry.child_id != child_id:
+                    raise ValueError(
+                        f"overrides is keyed {child_id!r} but holds an "
+                        f"override of child {entry.child_id}"
+                    )
+        # Read-only snapshot: reassignment is refused and no mutator
+        # exists, so a built engine answers consistently for its
+        # lifetime.  The overrides lists are copied to immutable
+        # tuples — a shallow mapping copy alone would leave caller-
+        # owned lists reachable through _overrides, and mutating one
+        # later would change is_present results.
+        object.__setattr__(self, "_schedules", MappingProxyType(dict(schedules)))
+        object.__setattr__(
+            self,
+            "_overrides",
+            MappingProxyType(
+                {child_id: tuple(entries) for child_id, entries in overrides.items()}
+            ),
+        )
+
+    def is_present(self, child_id: object, date: object) -> bool:
+        """Return whether ``child_id`` is present on ``date``.
+
+        Overrides take precedence over the repeating pattern: when an
+        override covers the date, its flag IS the answer — including
+        for a child with no schedule at all.  The DAO layer guarantees
+        a child's overrides never overlap; if a snapshot still carries
+        two covering the same date, the one with the LATEST start date
+        wins (deterministic, and matches "the most specific swap wins").
+        """
+        if isinstance(child_id, bool) or not isinstance(child_id, int):
+            raise ValueError(f"child_id must be an integer, got {child_id!r}")
+        target = _parse_date(date, "date")
+        entries = self._overrides.get(child_id) or []
+        covering = [
+            entry for entry in entries if entry.covers(target)
+        ]
+        if covering:
+            winner = max(covering, key=lambda entry: entry.start_date)
+            return winner.is_present
+        schedule = self._schedules.get(child_id)
+        if schedule is None:
+            # No schedule at all: present every day (household default).
+            return True
+        week = cycle_week_index(schedule, target)
+        return target.weekday() in schedule.pattern[week]
+
+    def next_present_dates(
+        self,
+        child_id: object,
+        start_date: object,
+        count: int,
+    ) -> list[datetime.date]:
+        """Return the next ``count`` dates the child is present.
+
+        Walks forward from ``start_date`` (INCLUSIVE — a parent
+        previewing "starting Monday" expects Monday itself when the
+        child is present) checking :meth:`is_present` for every day,
+        so overrides and the pattern are honoured identically.  The
+        admin Schedule tab renders this preview so a parent can confirm
+        a custody pattern is right before saving it.
+
+        A child absent every scanned day raises ValueError after the
+        two-year search cap — an always-absent child would otherwise
+        loop forever.  ``count`` must be a positive integer.
+        """
+        _validate_child_id(child_id)
+        start = _parse_date(start_date, "start_date")
+        if isinstance(count, bool) or not isinstance(count, int):
+            raise ValueError(f"count must be an integer, got {count!r}")
+        if count < 1:
+            raise ValueError(f"count must be at least 1, got {count}")
+        found: list[datetime.date] = []
+        day = start
+        for _ in range(MAX_PREVIEW_SCAN_DAYS):
+            if self.is_present(child_id, day):
+                found.append(day)
+                if len(found) == count:
+                    return found
+            day += datetime.timedelta(days=1)
+        raise ValueError(
+            f"child {child_id} is not present on any of the "
+            f"{MAX_PREVIEW_SCAN_DAYS} days from {start.isoformat()}; "
+            f"{count} present day(s) cannot be previewed"
+        )
+
+    def __setattr__(self, name: object, value: object) -> None:
+        raise AttributeError(
+            "PresenceEngine is an immutable snapshot; build a new engine "
+            "instead of mutating this one"
+        )

custom_components/nestquest/core/presence_management.py

@@ -0,0 +1,161 @@
+"""Business layer for presence writes (Feature 09, API admin plane).
+
+Sits between the write callers (the Feature 09 HA service handlers and
+the API admin plane's presence routes) and the typed presence DAOs plus
+the pure presence model: callers get the model validation, the upsert /
+create / delete operations and the regeneration side effect here, and
+never touch the DAO or SQL directly.  This is the ONE implementation of
+these business rules — every caller constructs the same
+:class:`~.presence.PresenceSchedule` / :class:`~.presence.PresenceOverride`
+models (whose constructors are total, so no re-validation happens in a
+handler) and gets the same post-write
+:func:`~.materialize.regenerate_for_child`, so a child's future quest
+instances track its changed presence no matter which plane issued the
+write.  Like the model it is Home-Assistant-free: ``today`` is a plain
+calendar date threaded through to the regeneration, defaulting to the
+host clock there.
+
+Upsert policy (Feature 05, unchanged): a child has AT MOST ONE presence
+schedule — setting again REPLACES the existing row rather than
+duplicating it.  Overrides are deletable by design (children are not —
+the children layer owns that guardrail).  Deleting a nonexistent
+override raises ValueError prefixed ``override_id:`` so a caller can
+distinguish "unknown id" from a rejected argument the same way the
+quest-definitions layer prefixes ``definition_id:``.
+"""
+from __future__ import annotations
+
+import datetime
+
+from .dao_presence import (
+    PresenceOverrideRecord,
+    PresenceOverridesDao,
+    PresenceSchedulesDao,
+)
+from .db import NestQuestDatabase
+from .materialize import regenerate_for_child
+from .presence import PresenceOverride, PresenceSchedule
+
+
+def _validate_override_id(value: object) -> int:
+    """Reject non-int override ids (bools would silently address id 1)."""
+    if isinstance(value, bool) or not isinstance(value, int):
+        raise ValueError(f"override_id must be an integer, got {value!r}")
+    return value
+
+
+async def set_presence_schedule(
+    database: NestQuestDatabase,
+    child_id: int,
+    cycle_length_weeks: int,
+    anchor_date: object,
+    pattern: dict[int, object],
+    *,
+    today: datetime.date | None = None,
+    horizon_days: int | None = None,
+) -> PresenceSchedule:
+    """Set (upsert) a child's repeating presence schedule.
+
+    The :class:`~.presence.PresenceSchedule` model validates at
+    construction — cycle length 1..4, a strict calendar anchor date,
+    and a pattern covering week indices 0..n-1 with weekday sets — so
+    no invalid schedule reaches the DAO.  The encoded pattern is
+    UPSERTed by child (a second set REPLACES the child's existing
+    schedule; the schema's UNIQUE(child_id) makes duplication
+    unrepresentable), then :func:`~.materialize.regenerate_for_child`
+    re-materializes the child's future instances against the new
+    presence.  ``today``/``horizon_days`` thread through to that
+    regeneration; raising ValueError names what to fix (an unknown
+    child reads ``child N does not exist``).
+
+    Returns the STORED schedule decoded back through the model — the
+    round-trip proves the encoded pattern the database now holds is
+    exactly the one the caller asked for.
+    """
+    schedule = PresenceSchedule(
+        child_id, cycle_length_weeks, anchor_date, pattern
+    )
+    record = await PresenceSchedulesDao(database).upsert_by_child(
+        schedule.child_id,
+        schedule.cycle_length_weeks,
+        schedule.anchor_date.isoformat(),
+        schedule.encode(),
+    )
+    await regenerate_for_child(
+        database, schedule.child_id, today=today, horizon_days=horizon_days
+    )
+    return PresenceSchedule.decode(
+        record.child_id, record.anchor_date, record.pattern
+    )
+
+
+async def create_presence_override(
+    database: NestQuestDatabase,
+    child_id: int,
+    start_date: object,
+    end_date: object,
+    is_present: bool,
+    note: str | None = None,
+    *,
+    today: datetime.date | None = None,
+    horizon_days: int | None = None,
+) -> PresenceOverrideRecord:
+    """Create one date-range presence override and return it as stored.
+
+    The :class:`~.presence.PresenceOverride` model validates at
+    construction — strict calendar dates, ``end_date`` on or after
+    ``start_date``, a real ``is_present`` bool, a string-or-None note —
+    then the DAO insert applies the same-child no-overlap policy (a
+    conflicting range raises ValueError naming the existing override)
+    and :func:`~.materialize.regenerate_for_child` re-materializes the
+    child's future instances against the override's presence answer.
+    An unknown child reads ``child N does not exist``.
+
+    Returns the stored record WITH its ``id`` — the handle a later
+    :func:`delete_presence_override` takes.
+    """
+    override = PresenceOverride(
+        child_id, start_date, end_date, is_present, note=note
+    )
+    record = await PresenceOverridesDao(database).create(
+        override.child_id,
+        override.start_date.isoformat(),
+        override.end_date.isoformat(),
+        override.is_present,
+        note=override.note,
+    )
+    await regenerate_for_child(
+        database, override.child_id, today=today, horizon_days=horizon_days
+    )
+    return record
+
+
+async def delete_presence_override(
+    database: NestQuestDatabase,
+    override_id: int,
+    *,
+    today: datetime.date | None = None,
+    horizon_days: int | None = None,
+) -> PresenceOverrideRecord:
+    """Delete one presence override by id and return it as it was stored.
+
+    The override is looked up FIRST and an unknown id raises ValueError
+    prefixed ``override_id:`` (naming the id) BEFORE any delete, so a
+    mistyped id can never be silently swallowed by a no-op.  The
+    deletion is followed by :func:`~.materialize.regenerate_for_child`
+    for the override's own child — the id decides the child, never a
+    caller-supplied one.  ``today``/``horizon_days`` thread through to
+    that regeneration.
+    """
+    _validate_override_id(override_id)
+    dao = PresenceOverridesDao(database)
+    override = await dao.get(override_id)
+    if override is None:
+        raise ValueError(
+            f"override_id: presence override {override_id} does not exist"
+        )
+    await dao.delete(override_id)
+    await regenerate_for_child(
+        database, override.child_id, today=today, horizon_days=horizon_days
+    )
+    return override

custom_components/nestquest/core/quest_definitions.py

@@ -0,0 +1,603 @@
+"""Business layer for creating and editing quest definitions (Feature 06).
+
+Sits between the Feature 09 service gate and the typed
+:class:`~.dao_rules.QuestDefinitionsDao`: callers get validation and the
+all-or-nothing create/edit here, and never touch the DAO SQL directly.
+:func:`create_quest_definition` is the create path,
+:func:`edit_quest_definition` the edit path, :func:`assign_child` and
+:func:`unassign_child` the assignment paths, and
+:func:`set_quest_definition_active` the deactivate/reactivate path.
+There is no permission check here (that is Feature 09).
+
+Validation policy mirrors :mod:`.children`:
+
+- ``title`` is required and trimmed; empty or whitespace-only raises
+  ValueError.
+- ``rule`` must be an already-validated :class:`~.recurrence.ScheduleRule`
+  (its constructor is total — rule validation is NOT re-implemented
+  here).
+- ``assignee_child_ids`` must be a non-empty list (strictly a ``list``);
+  every id is a plain int (bools and floats rejected, since SQLite would
+  bind them onto a real child) and must reference an existing ACTIVE
+  child (the DAO enforces the active/exists check inside the same
+  transaction).  Duplicate ids are rejected here, before the composite
+  primary key could surface them as an :class:`sqlite3.IntegrityError`.
+- ``windows`` must be a non-empty list (strictly a ``list``); each entry
+  is a window name from :data:`~.const.QUEST_WINDOWS` — either a bare
+  name (no due time) or a ``(name, due_time)`` pair whose due time is a
+  strict 24-hour HH:MM string.  Duplicate window names are rejected
+  here, before the composite primary key could surface them as an
+  :class:`sqlite3.IntegrityError`.
+
+The rule, definition, assignees and windows are persisted in ONE
+transaction (the DAO's :meth:`~.dao_rules.QuestDefinitionsDao.create_with_rule_and_windows`),
+so a rejected or failed create persists nothing.  The definition-level
+``due_time`` column is superseded by per-window due times (D-008) and is
+never set here.  ``created_at`` is stamped UTC ISO-8601 at second
+precision, matching :mod:`.children`.
+"""
+from __future__ import annotations
+
+import datetime
+from dataclasses import dataclass
+
+from .dao_children import ChildRecord, _connection_lock
+from .dao_rules import (
+    QuestDefinitionRecord,
+    QuestDefinitionSnapshot,
+    QuestDefinitionWindowRecord,
+    QuestDefinitionsDao,
+    ScheduleRuleStorage,
+    ScheduleRulesDao,
+    _UNSET,
+    _validate_date,
+    _validate_time,
+    _validate_window,
+    schedule_rule_from_storage,
+    schedule_rule_storage_from_record,
+    schedule_rule_to_storage,
+)
+from .db import NestQuestDatabase
+from .materialize import regenerate_for_definition
+from .recurrence import ScheduleRule, occurs_on
+
+
+@dataclass(frozen=True)
+class CreatedQuestDefinition:
+    """The persisted result of a create, edit or activation change.
+
+    ``definition`` is the stored row; ``rule`` is the schedule rule
+    decoded back through the storage mapping; ``assignees`` and
+    ``windows`` are the definition's linked child records and window
+    declarations, read through the DAO.
+    """
+
+    definition: QuestDefinitionRecord
+    rule: ScheduleRule
+    assignees: list[ChildRecord]
+    windows: list[QuestDefinitionWindowRecord]
+
+
+def _now_stamp() -> str:
+    """Return the module's strict UTC second-precision stamp."""
+    return datetime.datetime.now(datetime.timezone.utc).isoformat(
+        timespec="seconds"
+    )
+
+
+def _validate_text(
+    value: object, field: str, *, required: bool = False
+) -> str | None:
+    """Validate a free-text field and return it trimmed.
+
+    ``None`` raises when ``required`` and otherwise returns None.  A
+    non-string value is rejected; an empty result is rejected for
+    required fields.
+    """
+    if value is None:
+        if required:
+            raise ValueError(f"{field} is required")
+        return None
+    if not isinstance(value, str):
+        raise ValueError(f"{field} must be a string, got {value!r}")
+    trimmed = value.strip()
+    if required and not trimmed:
+        raise ValueError(f"{field} is required")
+    return trimmed
+
+
+def _validate_assignee_ids(value: object) -> list[int]:
+    """Return the assignee ids as plain ints, or raise naming the field.
+
+    The argument must be a non-empty list — strictly a ``list``: tuples
+    and other sequences are rejected.  Each entry must be a real int
+    (bools and floats rejected) so SQLite cannot bind ``True`` onto
+    child 1 or a float onto a neighbouring profile.
+    """
+    if type(value) is not list:
+        raise ValueError(
+            f"assignee_child_ids must be a list, got {type(value).__name__}"
+        )
+    if not value:
+        raise ValueError("assignee_child_ids must not be empty")
+    ids: list[int] = []
+    for entry in value:
+        if isinstance(entry, bool) or not isinstance(entry, int):
+            raise ValueError(
+                "assignee_child_ids must contain integer child ids, "
+                f"got {entry!r}"
+            )
+        ids.append(entry)
+    if len(set(ids)) != len(ids):
+        raise ValueError(
+            "assignee_child_ids must not contain duplicate child ids"
+        )
+    return ids
+
+
+def _normalize_windows(
+    value: object,
+) -> list[tuple[str, str | None]]:
+    """Normalize the windows argument to ``(name, due_time)`` pairs.
+
+    The outer argument must be a non-empty list — strictly a ``list``:
+    tuples and other sequences are rejected, while each individual entry
+    may still be a ``(window, due_time)`` tuple.  A bare window name
+    (due time None) is also accepted.  The name must be a
+    :data:`~.const.QUEST_WINDOWS` spelling and a present due time must be
+    a strict 24-hour HH:MM, both validated up front so a malformed
+    window is rejected before any write.
+    """
+    if type(value) is not list:
+        raise ValueError(
+            f"windows must be a list, got {type(value).__name__}"
+        )
+    if not value:
+        raise ValueError("windows must not be empty")
+    normalized: list[tuple[str, str | None]] = []
+    seen: set[str] = set()
+    for index, entry in enumerate(value):
+        if isinstance(entry, str):
+            name: object = entry
+            due_time: object = None
+        elif isinstance(entry, (tuple, list)) and len(entry) == 2:
+            name, due_time = entry[0], entry[1]
+        else:
+            raise ValueError(
+                f"windows[{index}] must be a window name or a "
+                f"(name, due_time) pair, got {entry!r}"
+            )
+        _validate_window(name)
+        if due_time is not None:
+            _validate_time(due_time, "due_time")
+        if name in seen:
+            raise ValueError(
+                f"windows must not contain duplicate window {name!r}"
+            )
+        seen.add(name)
+        normalized.append((name, due_time))
+    return normalized
+
+
+def _validate_definition_id(value: object) -> int:
+    """Reject non-int definition ids (bools included) before any lookup.
+
+    SQLite binds Python bools as integers, so ``True`` would silently
+    address definition 1 and a float would round — malformed service
+    input must never mutate the wrong definition.
+    """
+    if isinstance(value, bool) or not isinstance(value, int):
+        raise ValueError(f"definition_id must be an integer, got {value!r}")
+    return value
+
+
+def _validate_child_id(value: object) -> int:
+    """Reject non-int child ids (bools included) before any lookup.
+
+    SQLite binds Python bools as integers, so ``True`` would silently
+    address child 1 and a float would round — malformed service input
+    must never mutate the wrong profile.
+    """
+    if isinstance(value, bool) or not isinstance(value, int):
+        raise ValueError(f"child_id must be an integer, got {value!r}")
+    return value
+
+
+async def create_quest_definition(
+    database: NestQuestDatabase,
+    title: str,
+    rule: ScheduleRule,
+    assignee_child_ids: list[int],
+    windows: list[str | tuple[str, str | None]],
+    *,
+    description: str | None = None,
+    icon: str | None = None,
+) -> CreatedQuestDefinition:
+    """Create a quest definition (rule + assignees + windows) atomically.
+
+    Validates the arguments up front, then persists the schedule rule,
+    the definition, its assignees and its windows in one transaction via
+    the DAO.  Returns the stored definition together with its decoded
+    rule, assignees and windows — all read back inside that same
+    transaction, so the returned bundle is a consistent creation
+    snapshot.  Raises ValueError on any rejected argument; a rejected or
+    failed create persists nothing.
+    """
+    name = _validate_text(title, "title", required=True)
+    assert name is not None
+    if not isinstance(rule, ScheduleRule):
+        raise ValueError(f"rule must be a ScheduleRule, got {rule!r}")
+    assignee_ids = _validate_assignee_ids(assignee_child_ids)
+    window_specs = _normalize_windows(windows)
+    description_value = _validate_text(description, "description")
+    icon_value = _validate_text(icon, "icon")
+
+    storage = schedule_rule_to_storage(rule)
+    dao = QuestDefinitionsDao(database)
+    try:
+        snapshot = await dao.create_with_rule_and_windows(
+            name,
+            storage,
+            _now_stamp(),
+            assignee_ids,
+            window_specs,
+            description=description_value,
+            icon=icon_value,
+        )
+    except ValueError as error:
+        # The DAO's assignee check names only the child; re-raise so the
+        # public contract names the field the caller actually passed.
+        message = str(error)
+        if message.startswith("child "):
+            raise ValueError(
+                f"assignee_child_ids: {message}"
+            ) from error
+        raise
+    decoded_rule = schedule_rule_from_storage(storage)
+    return CreatedQuestDefinition(
+        definition=snapshot.definition,
+        rule=decoded_rule,
+        assignees=snapshot.assignees,
+        windows=snapshot.windows,
+    )
+
+
+async def edit_quest_definition(
+    database: NestQuestDatabase,
+    definition_id: int,
+    *,
+    title: str | object = _UNSET,
+    description: str | None | object = _UNSET,
+    icon: str | None | object = _UNSET,
+    rule: ScheduleRule | object = _UNSET,
+    windows: list[str | tuple[str, str | None]] | object = _UNSET,
+    today: datetime.date | None = None,
+    horizon_days: int | None = None,
+) -> CreatedQuestDefinition:
+    """Edit a quest definition's metadata, rule and windows atomically.
+
+    Arguments default to the sentinel ``_UNSET`` meaning "leave this
+    field alone".  A provided ``title`` is validated like create's
+    (required and trimmed); ``description`` and ``icon`` are optional
+    and may be cleared by passing ``None`` explicitly.  A provided
+    ``rule`` must be an already-validated :class:`~.recurrence.ScheduleRule`
+    and REPLACES the definition's schedule rule IN PLACE — the existing
+    ``schedule_rules`` row is updated, never orphaned or duplicated.  A
+    provided ``windows`` list REPLACES the whole window set (each entry
+    a ``const.QUEST_WINDOWS`` name, optionally with a strict HH:MM due
+    time), matching create's non-empty contract.  Assignment is NOT
+    settable here.  Raises ValueError when the definition does not
+    exist or any argument is rejected.
+
+    Returns the updated definition together with its decoded rule,
+    assignees and windows — all read back inside the DAO's transaction,
+    so the returned bundle is a consistent edit snapshot.  Edits change
+    future instances only; no ``quest_instances`` or
+    ``completion_events`` row is touched.
+
+    ``today`` optionally pins the caller-resolved HA-local date the
+    regeneration's no-past guard and horizon are anchored to (threaded
+    into :func:`~.materialize.regenerate_for_definition`); it is a plain
+    ``datetime.date`` with no HA import here — the Feature 09 service
+    supplies the hass-derived value.  When omitted, regeneration falls
+    back to the host clock, same as before.  ``horizon_days`` sizes the
+    regeneration's re-materialization window the same way (threaded into
+    :func:`~.materialize.regenerate_for_definition`); it defaults to
+    :data:`~.const.DEFAULT_HORIZON_DAYS` when omitted.
+    """
+    _validate_definition_id(definition_id)
+
+    title_value: str | None | object = _UNSET
+    if title is not _UNSET:
+        name = _validate_text(title, "title", required=True)
+        assert name is not None
+        title_value = name
+
+    description_value: str | None | object = _UNSET
+    if description is not _UNSET:
+        description_value = _validate_text(description, "description")
+
+    icon_value: str | None | object = _UNSET
+    if icon is not _UNSET:
+        icon_value = _validate_text(icon, "icon")
+
+    rule_storage: ScheduleRuleStorage | object = _UNSET
+    if rule is not _UNSET:
+        if not isinstance(rule, ScheduleRule):
+            raise ValueError(f"rule must be a ScheduleRule, got {rule!r}")
+        rule_storage = schedule_rule_to_storage(rule)
+
+    window_specs: list[tuple[str, str | None]] | object = _UNSET
+    if windows is not _UNSET:
+        window_specs = _normalize_windows(windows)
+
+    dao = QuestDefinitionsDao(database)
+    try:
+        snapshot = await dao.edit_definition(
+            definition_id,
+            title=title_value,
+            description=description_value,
+            icon=icon_value,
+            rule=rule_storage,
+            windows=window_specs,
+        )
+    except ValueError as error:
+        # The DAO's missing-definition error names only the id; re-raise
+        # so the public contract names the field the caller passed (matching
+        # assign/unassign/deactivate).
+        message = str(error)
+        if message.startswith("quest definition "):
+            raise ValueError(f"definition_id: {message}") from error
+        raise
+
+    decoded_rule = schedule_rule_from_storage(
+        schedule_rule_storage_from_record(snapshot.rule)
+    )
+
+    await regenerate_for_definition(
+        database, definition_id, today=today, horizon_days=horizon_days
+    )
+
+    return CreatedQuestDefinition(
+        definition=snapshot.definition,
+        rule=decoded_rule,
+        assignees=snapshot.assignees,
+        windows=snapshot.windows,
+    )
+
+
+async def assign_child(
+    database: NestQuestDatabase,
+    definition_id: int,
+    child_id: int,
+    *,
+    today: datetime.date | None = None,
+    horizon_days: int | None = None,
+) -> list[ChildRecord]:
+    """Assign ``child_id`` to the definition (idempotent).
+
+    Validates that both ids are plain ints (bools and floats rejected)
+    and that the child exists and is active — the DAO enforces the
+    active/exists check inside its transaction, and also confirms the
+    definition exists.  Assigning an already-assigned child is a no-op
+    (no duplicate row).  Returns the definition's assignees read back
+    inside the DAO's same transaction, a consistent post-assignment
+    roster (a concurrent assign/unassign cannot race it after the
+    write).  Raises ValueError on any rejected argument.  Only the
+    ``quest_definition_assignees`` link is written; existing instances
+    and completion history are never touched.
+
+    ``today`` optionally pins the caller-resolved HA-local date threaded
+    into the assignment's regeneration (see :func:`edit_quest_definition`).
+    ``horizon_days`` optionally sizes the regeneration's re-materialization
+    window the same way.
+    """
+    _validate_definition_id(definition_id)
+    _validate_child_id(child_id)
+    dao = QuestDefinitionsDao(database)
+    try:
+        assignees = await dao.add_assignee(definition_id, child_id)
+    except ValueError as error:
+        # The DAO names only the child/definition; re-raise so the
+        # public contract names the field the caller actually passed.
+        message = str(error)
+        if message.startswith("child "):
+            raise ValueError(f"child_id: {message}") from error
+        if message.startswith("quest definition "):
+            raise ValueError(f"definition_id: {message}") from error
+        raise
+    await regenerate_for_definition(
+        database, definition_id, today=today, horizon_days=horizon_days
+    )
+    return assignees
+
+
+async def unassign_child(
+    database: NestQuestDatabase,
+    definition_id: int,
+    child_id: int,
+    *,
+    today: datetime.date | None = None,
+    horizon_days: int | None = None,
+) -> bool:
+    """Unassign ``child_id`` from the definition; True when removed.
+
+    Validates both ids are plain ints (bools and floats rejected) and
+    that the definition exists, then removes the (definition, child)
+    link.  Returns True when a row was removed and False when the child
+    was not currently assigned.  Raises ValueError on a rejected
+    argument.  Only the ``quest_definition_assignees`` link is written;
+    existing instances and completion history are never touched.
+
+    ``today`` optionally pins the caller-resolved HA-local date threaded
+    into the unassignment's regeneration (see :func:`edit_quest_definition`).
+    ``horizon_days`` optionally sizes the regeneration's re-materialization
+    window the same way.
+    """
+    _validate_definition_id(definition_id)
+    _validate_child_id(child_id)
+    dao = QuestDefinitionsDao(database)
+    definition = await dao.get(definition_id)
+    if definition is None:
+        raise ValueError(
+            f"definition_id: quest definition {definition_id} does not exist"
+        )
+    removed = await dao.remove_assignee(definition_id, child_id)
+    await regenerate_for_definition(
+        database, definition_id, today=today, horizon_days=horizon_days
+    )
+    return removed
+
+
+async def set_quest_definition_active(
+    database: NestQuestDatabase,
+    definition_id: int,
+    is_active: bool,
+    *,
+    today: datetime.date | None = None,
+    horizon_days: int | None = None,
+) -> CreatedQuestDefinition:
+    """Deactivate or reactivate a definition; returns the updated view.
+
+    Flipping the flag is the only removal path (Feature 06 guardrail):
+    a deactivated definition stops future instance generation but its
+    row, schedule rule, assignees and windows all survive, and existing
+    instances plus completion history are never touched.  Reactivation
+    re-enables future generation; generating or removing instances is
+    Feature 07 and does not happen here.
+
+    ``definition_id`` must be a plain int (bools and floats rejected,
+    since SQLite would bind ``True`` onto definition 1) and
+    ``is_active`` must be a real bool — the DAO's ``int()`` would
+    otherwise silently coerce strings and numerics ("1", 0) into a
+    state the caller never asked for.  Raises ValueError naming the
+    offending field when the id is malformed, ``is_active`` is not a
+    bool, or the definition does not exist.
+
+    Atomicity: the existence check, the UPDATE and the readback of the
+    definition, its rule, assignees and windows all run inside the
+    connection-scoped lock, so the returned bundle is a consistent
+    snapshot that a concurrent mutation cannot race.
+
+    ``today`` optionally pins the caller-resolved HA-local date threaded
+    into the activation change's regeneration (see
+    :func:`edit_quest_definition`).  ``horizon_days`` optionally sizes the
+    regeneration's re-materialization window the same way.
+    """
+    _validate_definition_id(definition_id)
+    if not isinstance(is_active, bool):
+        raise ValueError(f"is_active must be a real bool, got {is_active!r}")
+    async with _connection_lock(database):
+        dao = QuestDefinitionsDao(database)
+        if await dao.get(definition_id) is None:
+            raise ValueError(
+                f"definition_id: quest definition {definition_id} "
+                "does not exist"
+            )
+        await dao.set_active(definition_id, is_active)
+        updated = await dao.get(definition_id)
+        assert updated is not None
+        rule_record = await ScheduleRulesDao(database).get(
+            updated.schedule_rule_id
+        )
+        assert rule_record is not None
+        assignees = await dao.list_assignees(definition_id)
+        windows = await dao.list_windows(definition_id)
+    rule = schedule_rule_from_storage(
+        schedule_rule_storage_from_record(rule_record)
+    )
+    await regenerate_for_definition(
+        database, definition_id, today=today, horizon_days=horizon_days
+    )
+    return CreatedQuestDefinition(
+        definition=updated,
+        rule=rule,
+        assignees=assignees,
+        windows=windows,
+    )
+
+
+def _bundle_snapshot(
+    snapshot: QuestDefinitionSnapshot,
+) -> CreatedQuestDefinition:
+    """Decode a DAO snapshot into the layer's rich view.
+
+    The rule record carried by the snapshot is the one the definition
+    referenced at read time, so decoding it here (rather than re-reading
+    through :class:`~.dao_rules.ScheduleRulesDao`) preserves the
+    coherence the DAO's locked snapshot guarantees: the rule, assignees
+    and windows all come from one atomic read, never three separate ones.
+    """
+    rule = schedule_rule_from_storage(
+        schedule_rule_storage_from_record(snapshot.rule)
+    )
+    return CreatedQuestDefinition(
+        definition=snapshot.definition,
+        rule=rule,
+        assignees=snapshot.assignees,
+        windows=snapshot.windows,
+    )
+
+
+async def list_active_definitions(
+    database: NestQuestDatabase,
+) -> list[CreatedQuestDefinition]:
+    """Return every ACTIVE definition with its decoded rule and links.
+
+    Ordered by rising definition id, matching the DAO's ``list_active``
+    order, so callers get a stable, repeatable sequence.  Each entry is
+    the same rich :class:`CreatedQuestDefinition` snapshot as the rest of
+    the layer: the stored row plus its decoded
+    :class:`~.recurrence.ScheduleRule`, assignees and windows.  The
+    definitions and their links are read by the DAO inside one locked
+    transaction, so each bundle is a coherent snapshot that a concurrent
+    edit cannot interleave.
+    """
+    dao = QuestDefinitionsDao(database)
+    snapshots = await dao.list_snapshots_active()
+    return [_bundle_snapshot(snapshot) for snapshot in snapshots]
+
+
+async def list_definitions_for_child(
+    database: NestQuestDatabase,
+    child_id: int,
+) -> list[CreatedQuestDefinition]:
+    """Return the definitions assigned to ``child_id`` (rich view).
+
+    ``child_id`` must be a plain int (bools and floats rejected, since
+    SQLite would bind ``True`` onto child 1).  Results are ordered by
+    rising definition id, matching ``list_active_definitions`` and
+    ``list_definitions_firing_on``.  Each entry is a
+    :class:`CreatedQuestDefinition` snapshot bundling the definition with
+    its decoded rule, assignees and windows, read atomically by the DAO.
+    """
+    _validate_child_id(child_id)
+    dao = QuestDefinitionsDao(database)
+    snapshots = await dao.list_snapshots_by_child(child_id)
+    bundles = [_bundle_snapshot(snapshot) for snapshot in snapshots]
+    return sorted(bundles, key=lambda bundle: bundle.definition.id)
+
+
+async def list_definitions_firing_on(
+    database: NestQuestDatabase,
+    date: str,
+) -> list[CreatedQuestDefinition]:
+    """Return the ACTIVE definitions whose rule fires on ``date``.
+
+    ``date`` must be a strict ISO calendar date (YYYY-MM-DD); a malformed
+    value raises ValueError naming the field.  Each active definition's
+    stored rule is decoded through the task-1 storage mapping and handed
+    to the recurrence engine's :func:`~.recurrence.occurs_on`; only the
+    definitions whose decoded rule fires on the date are returned, in
+    rising definition-id order, each as the same rich
+    :class:`CreatedQuestDefinition` snapshot as the rest of the layer.
+    The definitions and their rules are read inside one locked
+    transaction, so a bundle can never filter on one rule while
+    presenting another state's windows.
+    """
+    _validate_date(date, "date")
+    target = datetime.datetime.strptime(date, "%Y-%m-%d").date()
+    dao = QuestDefinitionsDao(database)
+    snapshots = await dao.list_snapshots_active()
+    bundles = [_bundle_snapshot(snapshot) for snapshot in snapshots]
+    return [bundle for bundle in bundles if occurs_on(bundle.rule, target)]

custom_components/nestquest/core/schema.py

@@ -109,25 +109,31 @@ status column.  An instance's current state derives from the latest row
 in ``completion_events`` (Feature 08), so materialization (Feature 07)
 can insert instances without knowing anything about completion and the
 append-only log stays the single source of truth.  ``definition_id``,
-``due_date`` and ``child_id`` snapshot the materialization-time facts
-("why this instance exists"): reassignment and rule edits change future
-instances only and never rewrite these rows.  ``due_time`` snapshots
-the definition's optional due time at generation for the same reason —
-the instance keeps its generation-time value even if the definition is
-edited later.  ``generated_at`` is a caller-set UTC ISO-8601 timestamp
-per the module timestamp policy (no DB default, so a generation batch
-stamps one coherent time).
+``child_id``, ``due_date`` and ``window`` snapshot the
+materialization-time facts ("why this instance exists"): assignment
+edits and rule edits change future instances only and never rewrite
+these rows.  ``window`` records which declared day window produced the
+instance (D-008), CHECK-constrained to the same three spellings
+``const`` owns.  ``due_time`` snapshots the window's optional due time
+at generation for the same reason — the instance keeps its
+generation-time value even if the definition is edited later.
+``generated_at`` is a caller-set UTC ISO-8601 timestamp per the module
+timestamp policy (no DB default, so a generation batch stamps one
+coherent time).
 
-Uniqueness: the (definition_id, due_date) pair is declared as a
-table-level ``UNIQUE`` constraint rather than a separate ``CREATE
-UNIQUE INDEX`` statement.  SQLite materializes it as an implicit unique
-index (``sqlite_autoindex_quest_instances_1``) — the required "unique
-index prevents duplicate instances" — and the constraint form cannot be
-silently dropped the way a standalone index can, so the duplicate door
-stays shut.  Idempotent materialization keys on exactly this pair.  No
-secondary indexes beyond it are declared yet: history and board queries
-(Features 08/10/13) should justify their indexes as a later migration
-once their query shapes exist.
+Uniqueness: the (definition_id, child_id, due_date, window) tuple is
+declared as a table-level ``UNIQUE`` constraint rather than a separate
+``CREATE UNIQUE INDEX`` statement.  SQLite materializes it as an
+implicit unique index (``sqlite_autoindex_quest_instances_1``) — the
+required "unique index prevents duplicate instances" — and the
+constraint form cannot be silently dropped the way a standalone index
+can, so the duplicate door stays shut.  Idempotent materialization keys
+on exactly this tuple: the twice-daily case (one definition, two
+windows, one child, one date) yields two rows and the shared case (one
+definition, three assignees, one window) yields three.  No secondary
+indexes beyond it are declared yet: history and board queries (Features
+08/10/13) should justify their indexes as a later migration once their
+query shapes exist.
 
 No ``ON DELETE`` clauses are declared on any foreign key in this
 module: children and definitions are deactivated, never deleted, so a
@@ -153,11 +159,12 @@ self-describing without joins.
 Actor policy: ``actor_source`` distinguishes an authenticated HA user
 (``'user'``, with ``actor_user_id`` holding the HA user id) from a
 panel tap with no user context (``'panel'``, with ``actor_user_id``
-NULL — the tapped child profile is already ``child_id``).  A coherence
-CHECK makes the pair shape non-negotiable: ``'user'`` requires
-``actor_user_id``, ``'panel'`` forbids it.  Other actor sources are
-rejected; if an unattended system actor is ever needed, that is a
-schema migration, not a silent widening.
+NULL — the tapped child profile is ``actor_child_id``, D-008).  Two
+coherence CHECKs make both shapes non-negotiable: ``'user'`` requires
+``actor_user_id`` and forbids ``actor_child_id``; ``'panel'`` requires
+``actor_child_id`` (the tapped profile) and forbids ``actor_user_id``.
+Other actor sources are rejected; if an unattended system actor is
+ever needed, that is a schema migration, not a silent widening.
 
 On-time policy: ``was_on_time`` is required (integer 0 or 1) for
 ``completed`` events — at completion time the due date is known and the
@@ -316,43 +323,79 @@ SCHEMA_V1_PRESENCE_OVERRIDES_DDL: list[str] = [
     """,
 ]
 
+#: Column body of ``quest_instances``, shared between the v1 DDL
+#: below and the instance-key rebuild migration, which must recreate
+#: the table in exactly this shape (D-008: the instance key is
+#: (definition_id, child_id, due_date, window) — one instance per
+#: assigned child per declared window per firing date).
+QUEST_INSTANCES_TABLE_SQL = """(
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    definition_id INTEGER NOT NULL REFERENCES quest_definitions(id),
+    child_id INTEGER NOT NULL REFERENCES children(id),
+    window TEXT NOT NULL CHECK (window IN ('morning', 'afternoon', 'evening')),
+    due_date TEXT NOT NULL,
+    due_time TEXT,
+    generated_at TEXT NOT NULL,
+    UNIQUE (definition_id, child_id, due_date, window)
+)"""
+
 SCHEMA_V1_QUEST_INSTANCES_DDL: list[str] = [
-    """
-    CREATE TABLE IF NOT EXISTS quest_instances (
-        id INTEGER PRIMARY KEY AUTOINCREMENT,
-        definition_id INTEGER NOT NULL REFERENCES quest_definitions(id),
-        child_id INTEGER NOT NULL REFERENCES children(id),
-        due_date TEXT NOT NULL,
-        due_time TEXT,
-        generated_at TEXT NOT NULL,
-        UNIQUE (definition_id, due_date)
-    )
+    f"""
+    CREATE TABLE IF NOT EXISTS quest_instances {QUEST_INSTANCES_TABLE_SQL}
     """,
 ]
 
-SCHEMA_V1_COMPLETION_EVENTS_DDL: list[str] = [
-    """
-    CREATE TABLE IF NOT EXISTS completion_events (
-        id INTEGER PRIMARY KEY AUTOINCREMENT,
-        instance_id INTEGER NOT NULL REFERENCES quest_instances(id),
-        child_id INTEGER NOT NULL REFERENCES children(id),
-        event_type TEXT NOT NULL CHECK (event_type IN ('completed', 'uncompleted')),
-        actor_source TEXT NOT NULL CHECK (actor_source IN ('user', 'panel')),
-        actor_user_id TEXT,
-        occurred_at TEXT NOT NULL,
-        was_on_time INTEGER CHECK (
-            was_on_time IS NULL
-            OR (typeof(was_on_time) = 'integer' AND was_on_time IN (0, 1))
-        ),
-        CHECK (
-            (actor_source = 'user' AND actor_user_id IS NOT NULL)
-            OR (actor_source = 'panel' AND actor_user_id IS NULL)
-        ),
-        CHECK (
-            (event_type = 'completed' AND was_on_time IS NOT NULL)
-            OR (event_type = 'uncompleted')
-        )
+#: Column body of ``completion_events``, shared between the v1 DDL
+#: below and the actor-child rebuild migration, which must recreate the
+#: table in exactly this shape (D-008: ``actor_child_id`` records which
+#: panel profile was tapped — set for panel events, NULL for admin
+#: ones; legacy panel rows backfill to ``child_id``, the child they
+#: always were).
+COMPLETION_EVENTS_TABLE_SQL = """(
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    instance_id INTEGER NOT NULL REFERENCES quest_instances(id),
+    child_id INTEGER NOT NULL REFERENCES children(id),
+    event_type TEXT NOT NULL CHECK (event_type IN ('completed', 'uncompleted')),
+    actor_source TEXT NOT NULL CHECK (actor_source IN ('user', 'panel')),
+    actor_user_id TEXT,
+    actor_child_id INTEGER REFERENCES children(id),
+    occurred_at TEXT NOT NULL,
+    was_on_time INTEGER CHECK (
+        was_on_time IS NULL
+        OR (typeof(was_on_time) = 'integer' AND was_on_time IN (0, 1))
+    ),
+    CHECK (
+        (actor_source = 'user' AND actor_user_id IS NOT NULL)
+        OR (actor_source = 'panel' AND actor_user_id IS NULL)
+    ),
+    CHECK (
+        (actor_source = 'user' AND actor_child_id IS NULL)
+        OR (actor_source = 'panel' AND actor_child_id IS NOT NULL)
+    ),
+    CHECK (
+        (event_type = 'completed' AND was_on_time IS NOT NULL)
+        OR (event_type = 'uncompleted')
     )
+)"""
+
+SCHEMA_V1_COMPLETION_EVENTS_DDL: list[str] = [
+    f"""
+    CREATE TABLE IF NOT EXISTS completion_events {COMPLETION_EVENTS_TABLE_SQL}
+    """,
+]
+
+#: Generic integration-owned key/value state (schema version 7,
+#: Feature 11): persistent bookkeeping that belongs to the integration
+#: rather than any domain table — currently the missed-sweep
+#: watermark.  ``value`` is a plain string; callers interpret it.
+META_STATE_TABLE_SQL = """(
+    key TEXT NOT NULL PRIMARY KEY,
+    value TEXT NOT NULL
+)"""
+
+SCHEMA_V7_META_STATE_DDL: list[str] = [
+    f"""
+    CREATE TABLE IF NOT EXISTS nestquest_meta_state {META_STATE_TABLE_SQL}
     """,
 ]
 
@@ -367,6 +410,7 @@ SCHEMA_V1_STATEMENTS: list[str] = [
     *SCHEMA_V1_PRESENCE_OVERRIDES_DDL,
     *SCHEMA_V1_QUEST_INSTANCES_DDL,
     *SCHEMA_V1_COMPLETION_EVENTS_DDL,
+    *SCHEMA_V7_META_STATE_DDL,
 ]
 
 

custom_components/nestquest/core/settings.py

@@ -0,0 +1,379 @@
+"""Explicit, Home-Assistant-free settings object for NestQuest core.
+
+The integration reads its configuration off a Home Assistant config
+entry (``entry.options``); the core package must not.  This module
+bridges that split: it defines a frozen, validation-carrying
+:class:`NestQuestSettings` dataclass that the integration constructs
+from ``entry.options`` (via :meth:`NestQuestSettings.from_options`, or
+:meth:`NestQuestSettings.from_options_resilient` for the per-field
+fallback used at setup) and then passes into the core paths that
+previously read HA config themselves — the rolling horizon
+(``horizon_days``) and the daily rollover time (``day_rollover_time``),
+plus the Feature 11 notification settings (notify target, the three
+summary/reminder/report times, and the four independent enable toggles).
+
+Nothing in this module imports ``homeassistant`` or touches a config
+entry; ``from_options`` accepts any plain mapping keyed by the
+:data:`~.const.CONF_*` names.  The validation semantics match the
+options flow's: ``horizon_days`` must be a real integer >= 1 (bool
+rejected), and ``day_rollover_time`` plus the three notification times
+must be strict ``HH:MM`` 24-hour strings.  Construction therefore can
+never yield a settings object whose horizon could shrink or explode the
+materialized window, or whose rollover fires at an unparsable time.
+
+The strict resolvers (:func:`_resolve_horizon_days`, :func:`_validate_hhmm`,
+:func:`_resolve_bool`, :func:`_resolve_optional_str`) reject ``None``; the
+``None``-as-absent mapping lives ONLY in :meth:`from_options` /
+:meth:`from_options_resilient` (via :func:`_option_value`), so a hand-built
+:class:`NestQuestSettings` cannot smuggle a ``None`` past
+:meth:`__post_init__`.
+"""
+from __future__ import annotations
+
+import datetime
+from collections.abc import Callable
+from dataclasses import dataclass
+from types import MappingProxyType
+from typing import Any, Mapping
+
+from .const import (
+    CONF_AFTERNOON_REMINDER_ENABLED,
+    CONF_AFTERNOON_REMINDER_TIME,
+    CONF_CELEBRATION_ENABLED,
+    CONF_DAY_ROLLOVER_TIME,
+    CONF_END_OF_DAY_REPORT_ENABLED,
+    CONF_END_OF_DAY_REPORT_TIME,
+    CONF_HORIZON_DAYS,
+    CONF_MORNING_SUMMARY_ENABLED,
+    CONF_MORNING_SUMMARY_TIME,
+    CONF_NOTIFY_TARGET,
+    DEFAULT_AFTERNOON_REMINDER_TIME,
+    DEFAULT_AUTOMATION_ENABLED,
+    DEFAULT_DAY_ROLLOVER_TIME,
+    DEFAULT_END_OF_DAY_REPORT_TIME,
+    DEFAULT_HORIZON_DAYS,
+    DEFAULT_MORNING_SUMMARY_TIME,
+    LOGGER,
+    TIME_PATTERN,
+)
+
+
+def _option_value(
+    opts: Mapping[str, Any], key: str, default: Any
+) -> Any:
+    """Return ``opts[key]`` when present and non-None, else ``default``.
+
+    This is the SOLE place the ``None``-as-absent mapping lives: a stored
+    ``None`` is treated the same as an absent key — the historical
+    ``horizon_days`` path mapped a missing-or-None value to the default,
+    and this keeps that forgiving semantics uniform across every field.
+    The per-field resolvers (:func:`_resolve_horizon_days`,
+    :func:`_validate_hhmm`, :func:`_resolve_bool`,
+    :func:`_resolve_optional_str`) are STRICT — they reject ``None`` —
+    so a partially-populated ``entry.options`` dict (or one migrated
+    across versions) never raises just because a key carries ``None``,
+    and a hand-built :class:`NestQuestSettings` cannot smuggle a
+    ``None`` past :meth:`NestQuestSettings.__post_init__`.
+    """
+    if key not in opts:
+        return default
+    value = opts[key]
+    return default if value is None else value
+
+
+def _validate_hhmm(value: Any, *, field: str) -> str:
+    """Validate a strict ``HH:MM`` string and return it; raise naming ``field``.
+
+    Uses the shared :data:`~.const.TIME_PATTERN` (the same compiled
+    regex the options flow applies), so a stored option and a freshly
+    validated form submit parse the same way.  ``None`` (and any
+    non-string) is rejected; the ``None``-as-absent mapping lives ONLY
+    in :meth:`NestQuestSettings.from_options` (via :func:`_option_value`).
+    """
+    if not isinstance(value, str) or TIME_PATTERN.fullmatch(value) is None:
+        raise ValueError(
+            f"{field} must be a strict HH:MM string, got {value!r}"
+        )
+    return value
+
+
+def _resolve_horizon_days(value: Any) -> int:
+    """Validate a horizon value and return the resolved day count.
+
+    A bool is rejected (SQLite binds ``True``/``False`` onto an int), a
+    non-int is rejected, and a sub-1 value is rejected — so a malformed
+    option can never shrink or explode the materialized horizon.
+    ``None`` is rejected here too; the ``None``-as-absent mapping lives
+    ONLY in :meth:`NestQuestSettings.from_options` (via
+    :func:`_option_value`), so a hand-built
+    :class:`NestQuestSettings(horizon_days=None)` raises in
+    :meth:`NestQuestSettings.__post_init__` rather than silently
+    constructing an object whose :meth:`NestQuestSettings.horizon_window`
+    would later raise ``TypeError`` on ``timedelta(days=None)``.
+    """
+    if isinstance(value, bool) or not isinstance(value, int) or value < 1:
+        raise ValueError(
+            f"horizon_days must be a positive integer, got {value!r}"
+        )
+    return value
+
+
+def _resolve_bool(value: Any) -> bool:
+    """Return a real bool; a non-bool (including ``None``) is rejected.
+
+    voluptuous ``bool`` would coerce strings, so the options flow uses a
+    strict-bool validator and this mirrors it.  The ``None``-as-absent
+    mapping lives ONLY in :meth:`NestQuestSettings.from_options` (via
+    :func:`_option_value`).
+    """
+    if not isinstance(value, bool):
+        raise ValueError(f"expected a boolean, got {value!r}")
+    return value
+
+
+def _resolve_optional_str(value: Any) -> str:
+    """Return a stripped notify target string; a non-str is rejected.
+
+    A padded or whitespace-only value is STRIPPED to its trim — the
+    shipped default is the empty string, meaning "no notifications are
+    configured yet".  This is intentionally MORE LENIENT than the options
+    flow, which REJECTS a target that differs from its own trim (so a
+    padded value never persists): the integration tolerates a stored
+    padded value (e.g. one migrated from an older schema) by normalizing
+    it rather than crashing setup.  The ``None``-as-absent mapping lives
+    ONLY in :meth:`NestQuestSettings.from_options` (via
+    :func:`_option_value`).  :meth:`NestQuestSettings.__post_init__`
+    applies this SAME normalizer so a hand-built
+    ``NestQuestSettings(notify_target=' x ')`` is stripped to ``'x'``
+    exactly like the options-flow path (no padded value can slip through
+    direct construction either).
+    """
+    if not isinstance(value, str):
+        raise ValueError(f"notify_target must be a string, got {value!r}")
+    return value.strip()
+
+
+#: The single field table the two builders share.  Each row is
+#: ``(field_name, CONF_* key, default, validator)``.  ``from_options``
+#: applies every validator (raising on the first invalid value) while
+#: ``from_options_resilient`` wraps each in its own try/except so a single
+#: bad sibling falls back to its default alone.  Driving both builders
+#: from this table avoids three-way drift between ``__post_init__``'s
+#: inline checks and the two option builders' field lists: the only
+#: places that enumerate the fields are this table and
+#: ``__post_init__`` (which validates a hand-built instance without the
+#: None->default mapping, so it stays inline).
+_FIELDS: tuple[tuple[str, str, Any, Callable[[Any], Any]], ...] = (
+    ("horizon_days", CONF_HORIZON_DAYS, DEFAULT_HORIZON_DAYS, _resolve_horizon_days),
+    (
+        "day_rollover_time",
+        CONF_DAY_ROLLOVER_TIME,
+        DEFAULT_DAY_ROLLOVER_TIME,
+        lambda v: _validate_hhmm(v, field="day_rollover_time"),
+    ),
+    ("notify_target", CONF_NOTIFY_TARGET, "", _resolve_optional_str),
+    (
+        "morning_summary_time",
+        CONF_MORNING_SUMMARY_TIME,
+        DEFAULT_MORNING_SUMMARY_TIME,
+        lambda v: _validate_hhmm(v, field="morning_summary_time"),
+    ),
+    (
+        "afternoon_reminder_time",
+        CONF_AFTERNOON_REMINDER_TIME,
+        DEFAULT_AFTERNOON_REMINDER_TIME,
+        lambda v: _validate_hhmm(v, field="afternoon_reminder_time"),
+    ),
+    (
+        "end_of_day_report_time",
+        CONF_END_OF_DAY_REPORT_TIME,
+        DEFAULT_END_OF_DAY_REPORT_TIME,
+        lambda v: _validate_hhmm(v, field="end_of_day_report_time"),
+    ),
+    (
+        "morning_summary_enabled",
+        CONF_MORNING_SUMMARY_ENABLED,
+        DEFAULT_AUTOMATION_ENABLED,
+        _resolve_bool,
+    ),
+    (
+        "afternoon_reminder_enabled",
+        CONF_AFTERNOON_REMINDER_ENABLED,
+        DEFAULT_AUTOMATION_ENABLED,
+        _resolve_bool,
+    ),
+    (
+        "end_of_day_report_enabled",
+        CONF_END_OF_DAY_REPORT_ENABLED,
+        DEFAULT_AUTOMATION_ENABLED,
+        _resolve_bool,
+    ),
+    (
+        "celebration_enabled",
+        CONF_CELEBRATION_ENABLED,
+        DEFAULT_AUTOMATION_ENABLED,
+        _resolve_bool,
+    ),
+)
+
+
+@dataclass(frozen=True)
+class NestQuestSettings:
+    """Explicit, HA-free configuration carried into core paths.
+
+    The integration builds this once from ``entry.options`` (via
+    :meth:`from_options`, or :meth:`from_options_resilient` for the
+    per-field fallback used at setup) and threads it into the horizon
+    materialization and the daily-rollover scheduling.  Core never
+    reads HA config itself; callers pass the resolved horizon and
+    rollover time in.
+
+    All fields are validated at construction; the dataclass is frozen so
+    a stale settings object cannot be mutated in place after the
+    integration hands it off.
+    """
+
+    horizon_days: int = DEFAULT_HORIZON_DAYS
+    day_rollover_time: str = DEFAULT_DAY_ROLLOVER_TIME
+    notify_target: str = ""
+    morning_summary_time: str = DEFAULT_MORNING_SUMMARY_TIME
+    afternoon_reminder_time: str = DEFAULT_AFTERNOON_REMINDER_TIME
+    end_of_day_report_time: str = DEFAULT_END_OF_DAY_REPORT_TIME
+    morning_summary_enabled: bool = DEFAULT_AUTOMATION_ENABLED
+    afternoon_reminder_enabled: bool = DEFAULT_AUTOMATION_ENABLED
+    end_of_day_report_enabled: bool = DEFAULT_AUTOMATION_ENABLED
+    celebration_enabled: bool = DEFAULT_AUTOMATION_ENABLED
+
+    def __post_init__(self) -> None:
+        # Validate STRICTLY at construction so a hand-built instance
+        # cannot carry an invalid value: the same rules from_options
+        # applies, but WITHOUT the None->default mapping (that lives
+        # only in from_options via _option_value).  A None horizon, time,
+        # or toggle raises here rather than later blowing up
+        # horizon_window or the rollover listener.
+        _resolve_horizon_days(self.horizon_days)
+        _validate_hhmm(self.day_rollover_time, field="day_rollover_time")
+        # ``notify_target`` is normalised the SAME way as from_options
+        # (via _resolve_optional_str): a non-str is rejected and a
+        # padded/whitespace-only value is STRIPPED to its trim.  This
+        # keeps a hand-built ``NestQuestSettings(notify_target=' x ')``
+        # behaving like the options flow (which strips on persist) so a
+        # padded value cannot slip through direct construction either.
+        # The dataclass is frozen, so the stripped value is written via
+        # object.__setattr__.
+        stripped_notify_target = _resolve_optional_str(self.notify_target)
+        object.__setattr__(self, "notify_target", stripped_notify_target)
+        _validate_hhmm(self.morning_summary_time, field="morning_summary_time")
+        _validate_hhmm(
+            self.afternoon_reminder_time, field="afternoon_reminder_time"
+        )
+        _validate_hhmm(
+            self.end_of_day_report_time, field="end_of_day_report_time"
+        )
+        for name in (
+            "morning_summary_enabled",
+            "afternoon_reminder_enabled",
+            "end_of_day_report_enabled",
+            "celebration_enabled",
+        ):
+            value = getattr(self, name)
+            if not isinstance(value, bool):
+                raise ValueError(
+                    f"{name} must be a boolean, got {value!r}"
+                )
+
+    @property
+    def day_rollover_hour_minute(self) -> tuple[int, int]:
+        """The (hour, minute) the daily rollover fires at."""
+        # The string is validated at construction, so a plain partition
+        # is safe and avoids re-running the regex on every access.
+        hour_str, _, minute_str = self.day_rollover_time.partition(":")
+        return int(hour_str), int(minute_str)
+
+    def horizon_window(
+        self, today: datetime.date
+    ) -> tuple[datetime.date, datetime.date]:
+        """Return the rolling horizon window ``[today, today + horizon_days]``.
+
+        ``today`` is REQUIRED (there is no host-clock default): the
+        integration passes the HA-local ``hass.config.time_zone`` date so
+        the horizon tracks the household's own day, and a silent
+        host-clock fallback would be a wrong-day footgun (a test or a
+        caller that forgets to pass ``today`` would otherwise materialize
+        against the machine's calendar, not the household's).  The
+        returned window is closed/inclusive — the same shape
+        :func:`~.materialize.materialize` walks.
+        """
+        end = today + datetime.timedelta(days=self.horizon_days)
+        return today, end
+
+    @classmethod
+    def from_options(
+        cls, options: Mapping[str, Any] | None = None
+    ) -> "NestQuestSettings":
+        """Build settings from a CONF_*-keyed mapping (e.g. ``entry.options``).
+
+        Reads the same keys the options flow persists, applying the
+        matching defaults when a key is absent OR ``None`` (via
+        :func:`_option_value`, the SOLE place the ``None``-as-absent
+        mapping lives) and validating STRICTLY: ``horizon_days`` is a
+        positive int (bool rejected), the four times are strict
+        ``HH:MM``, the four toggles are real booleans, and
+        ``notify_target`` is a string (stripped).  A malformed value
+        RAISES — the integration uses :meth:`from_options_resilient` at
+        setup to fall back per field instead of crashing.  A ``None``
+        mapping yields the all-defaults settings — useful for tests and
+        for a fresh install whose options dict is empty.
+
+        ``options`` is consumed read-only via
+        :class:`types.MappingProxyType`, so this method never mutates
+        the caller's mapping.
+        """
+        opts: Mapping[str, Any] = (
+            MappingProxyType({}) if options is None else MappingProxyType(options)
+        )
+        return cls(
+            **{
+                field: validator(_option_value(opts, key, default))
+                for field, key, default, validator in _FIELDS
+            }
+        )
+
+    @classmethod
+    def from_options_resilient(
+        cls, options: Mapping[str, Any] | None = None
+    ) -> "NestQuestSettings":
+        """Build settings, falling back PER FIELD on a malformed value.
+
+        Unlike :meth:`from_options` (which raises on the first invalid
+        field), this resolves EACH field in its own try/except: a
+        malformed value logs a :data:`~.const.LOGGER` warning naming the
+        field and falls back to that field's default.  The integration
+        uses this at setup so a single bad sibling option (e.g. a
+        migrated ``morning_summary_time`` of ``'25:00'``) cannot
+        silently reset the user's ``horizon_days`` or
+        ``day_rollover_time`` — the two fields core actually consumes.
+
+        An absent or ``None`` key maps to the default via
+        :func:`_option_value` WITHOUT a warning (that is the normal
+        missing-key path); only a present, non-``None``, invalid value
+        triggers a warning and a per-field fallback.
+        """
+        opts: Mapping[str, Any] = (
+            MappingProxyType({}) if options is None else MappingProxyType(options)
+        )
+        resolved: dict[str, Any] = {}
+        for field, key, default, validator in _FIELDS:
+            raw = _option_value(opts, key, default)
+            try:
+                resolved[field] = validator(raw)
+            except ValueError as err:
+                LOGGER.warning(
+                    "NestQuest option %s is invalid (%s); falling back "
+                    "to the default %r",
+                    field,
+                    err,
+                    default,
+                )
+                resolved[field] = default
+        return cls(**resolved)

custom_components/nestquest/core/settings_store.py

@@ -0,0 +1,210 @@
+"""Durable settings store for the NestQuest API service.
+
+The API service has NO Home Assistant config entry, so it cannot build
+:class:`~.settings.NestQuestSettings` from ``entry.options`` the way the
+integration does.  This module gives the API its own durable settings
+source: a JSON document kept in the EXISTING ``nestquest_meta_state``
+key/value table (:class:`~.dao_meta.MetaStateDao`) under the well-known
+key :data:`SETTINGS_META_KEY` — no schema change, no new table —
+validated through the SAME field table the settings object is built
+from (:data:`~.settings._FIELDS`, the table driving
+``from_options``/``from_options_resilient``).  No validation rule is
+re-implemented here.
+
+OWNERSHIP: the API now owns settings in the database.  The
+integration's Home-Assistant config-entry options remain a temporary,
+SEPARATE source until Feature 18 converts the integration into a thin
+API client; the two are deliberately NOT unified here, and neither
+side reads the other's values.
+
+STORED SERIALIZATION — the document at ``SETTINGS_META_KEY`` is a JSON
+object holding exactly the TEN settings fields, keyed by field name
+(which equals the ``CONF_*`` option key for every field), complete
+after the first update:
+
+- ``horizon_days`` — int >= 1,
+- ``day_rollover_time``, ``morning_summary_time``,
+  ``afternoon_reminder_time``, ``end_of_day_report_time`` — strict
+  24-hour ``HH:MM`` strings,
+- ``notify_target`` — a string (a padded value is stripped by the
+  core's normalizer),
+- ``morning_summary_enabled``, ``afternoon_reminder_enabled``,
+  ``end_of_day_report_enabled``, ``celebration_enabled`` — real
+  booleans.
+
+Only values whose core validators ACCEPTED are ever written, so a
+stored document always round-trips through the core's option builders.
+An absent key (a fresh database) resolves to the all-defaults
+settings, and a corrupt document degrades to defaults or per-field
+defaults rather than crashing the service (see :func:`load_settings`).
+"""
+from __future__ import annotations
+
+import asyncio
+import json
+from collections.abc import Mapping
+from typing import Any
+
+from .const import LOGGER
+from .dao_meta import MetaStateDao
+from .db import NestQuestDatabase
+from .settings import NestQuestSettings, _FIELDS
+
+#: The well-known ``nestquest_meta_state`` key holding the settings
+#: document.  One key, one JSON object — the same table the missed
+#: sweep's watermark already uses, so no migration is needed.
+SETTINGS_META_KEY = "settings"
+
+#: The per-field resolution table keyed by field name: each row is the
+#: ``(default, validator)`` pair the settings module's ``_FIELDS`` table
+#: carries for that field.  ``update_settings`` resolves each PROVIDED
+#: field through its row's validator — the SAME core validators
+#: ``from_options`` applies — and never re-implements one here.
+#: (Field names equal the ``CONF_*`` option keys, so one dict serves
+#: both the API's field names and the stored document's keys.)
+_RESOLUTIONS: dict[str, tuple[Any, Any]] = {
+    key: (default, validator) for _field, key, default, validator in _FIELDS
+}
+
+#: The known field names, in the settings module's field order — the
+#: allowed keys of an update body and the stored document's key set.
+_FIELD_NAMES: tuple[str, ...] = tuple(
+    key for _field, key, _default, _validator in _FIELDS
+)
+
+#: One asyncio.Lock per (connection wrapper, running loop), the missed
+#: sweep's pattern: the whole stored-document read → merge → write span
+#: is one critical section, so two concurrent updates queue instead of
+#: one losing the other's change — the loser re-reads the document
+#: INSIDE the lock and merges onto the winner's settings.
+_SETTINGS_LOCKS: dict[tuple[int, int], asyncio.Lock] = {}
+
+
+def _settings_lock(database: NestQuestDatabase) -> asyncio.Lock:
+    """Return the settings lock bound to ``database``'s running loop."""
+    loop = asyncio.get_running_loop()
+    key = (id(database), id(loop))
+    lock = _SETTINGS_LOCKS.get(key)
+    if lock is None:
+        lock = asyncio.Lock()
+        _SETTINGS_LOCKS[key] = lock
+    return lock
+
+
+async def _load_document(database: NestQuestDatabase) -> dict[str, Any]:
+    """Read and decode the stored settings document (empty when unusable).
+
+    An absent key — a fresh database that never updated settings — and
+    an unparseable value (invalid JSON, or JSON that is not an object)
+    return an empty mapping, which the option builders resolve to the
+    all-defaults settings; the corrupt cases log a warning first.  A
+    parseable object is returned as stored (its per-field validity is
+    the builder's concern, not this reader's).
+    """
+    raw = await MetaStateDao(database).get(SETTINGS_META_KEY)
+    if raw is None:
+        return {}
+    try:
+        document = json.loads(raw)
+    except ValueError:
+        LOGGER.warning(
+            "NestQuest stored settings (meta_state key %r) are not valid "
+            "JSON; falling back to the default settings",
+            SETTINGS_META_KEY,
+        )
+        return {}
+    if not isinstance(document, dict):
+        LOGGER.warning(
+            "NestQuest stored settings (meta_state key %r) are not a JSON "
+            "object; falling back to the default settings",
+            SETTINGS_META_KEY,
+        )
+        return {}
+    return document
+
+
+def _named(field: str, error: ValueError) -> str:
+    """Return a field-named message for a rejected validator value.
+
+    The horizon, time and notify-target validators already name their
+    field in the message; the boolean validator's message is generic
+    (``expected a boolean, got ...``), so it gets the field prefixed.
+    Every rejected update's error therefore names its field either way.
+    """
+    message = str(error)
+    if message.startswith(f"{field} "):
+        return message
+    return f"{field}: {message}"
+
+
+async def load_settings(database: NestQuestDatabase) -> NestQuestSettings:
+    """Return the current effective settings stored for ``database``.
+
+    Reads :data:`SETTINGS_META_KEY` and resolves the stored document
+    through the core settings validators, with each absent field
+    falling back to its default.  An absent key and an unparseable
+    document fall back to the all-defaults settings (via
+    :func:`_load_document`), and a parseable document with a single
+    invalid FIELD falls back PER FIELD — through
+    :meth:`NestQuestSettings.from_options_resilient`, the core's own
+    resilient builder — so a corrupt sibling never resets the stored
+    values around it.  This never raises: the service must keep
+    serving reads even over a corrupt store.
+    """
+    document = await _load_document(database)
+    return NestQuestSettings.from_options_resilient(document)
+
+
+async def update_settings(
+    database: NestQuestDatabase, changes: Mapping[str, Any]
+) -> NestQuestSettings:
+    """Validate ``changes`` and persist them as the effective settings.
+
+    ``changes`` maps settings field names to new values.  EVERY name is
+    checked against the known field table BEFORE anything is validated
+    or written: an unknown name raises a ``ValueError`` naming it (and
+    the known names), leaving the stored settings untouched.  Each
+    PROVIDED field is then resolved from_options-style — its
+    :data:`~.settings._FIELDS` validator applied, with a JSON ``null``
+    mapping to the field's default (the settings module's uniform
+    None-as-absent rule) — and an invalid value raises a ``ValueError``
+    naming the field, also BEFORE anything is written, so a rejected
+    update can never leave a half-applied document behind.
+
+    The validated changes are merged onto the current effective
+    settings and the merged (complete, ten-field) document is persisted
+    in one atomic upsert; the updated settings are returned.  The whole
+    read → merge → write span runs inside the per-database settings
+    lock, so concurrent updates queue instead of interleaving.
+    """
+    if not isinstance(changes, Mapping):
+        raise ValueError(
+            "settings changes must be a JSON object mapping field names "
+            "to values"
+        )
+    unknown = sorted(
+        str(name) for name in changes if name not in _RESOLUTIONS
+    )
+    if unknown:
+        listed = ", ".join(repr(name) for name in unknown)
+        known = ", ".join(_FIELD_NAMES)
+        raise ValueError(
+            f"unknown settings field(s): {listed}; known fields: {known}"
+        )
+    async with _settings_lock(database):
+        current = await load_settings(database)
+        document: dict[str, Any] = {
+            field: getattr(current, field) for field in _FIELD_NAMES
+        }
+        for name, raw_value in changes.items():
+            default, validator = _RESOLUTIONS[name]
+            try:
+                document[name] = validator(
+                    default if raw_value is None else raw_value
+                )
+            except ValueError as error:
+                raise ValueError(_named(name, error)) from error
+        await MetaStateDao(database).set(
+            SETTINGS_META_KEY, json.dumps(document, sort_keys=True)
+        )
+    return NestQuestSettings(**document)

custom_components/nestquest/core/snapshot.py

@@ -0,0 +1,306 @@
+"""Pure, Home-Assistant-free panel snapshot builder.
+
+The household snapshot the NestQuest panel renders — active children in
+sort order, each child's today-instances in the documented payload shape
+(missed instances OMITTED from the entity-facing attribute payload, but
+retained on the snapshot for the count rollups), per-child counts and
+presence, and the custody cycle day — used to be assembled inline inside
+:mod:`custom_components.nestquest.coordinator`'s
+``_async_update_data``.  That assembly is HA-coupled only because its
+host is a :class:`~homeassistant.helpers.update_coordinator.DataUpdateCoordinator`;
+the assembly itself touches no HA surface.
+
+This module holds the pure pieces — the snapshot dataclasses
+(:class:`QuestInstanceView`, :class:`ChildDaySnapshot`,
+:class:`NestQuestSnapshot`), the cycle-day helper (:func:`_cycle_day`),
+the panel payload shaper (:func:`instance_payload`), and the async
+:func:`build_snapshot` builder — so the HA coordinator and the API
+service's panel snapshot route share ONE implementation of both the
+snapshot assembly and the entity-facing attribute payload shape.
+Nothing here imports :mod:`homeassistant`; the builder takes the
+database, the settings object, and the HA-local ``now`` (a single
+clock read the caller already resolved, from which it derives
+``today``) and returns the snapshot, mirroring exactly what the
+coordinator used to do inline.
+
+``settings`` is accepted because the API route hands in the entry's
+:class:`~.settings.NestQuestSettings`; it is CURRENTLY UNUSED — the
+assembly reads nothing from it — and is retained so the builder's
+contract stays stable if a future panel feature derives scan caps or
+rollup behaviour from configuration.  No speculative read is wired in.
+"""
+from __future__ import annotations
+
+import datetime
+from collections.abc import Iterable
+from dataclasses import dataclass
+from typing import Any
+
+from .completion import derive_state
+from .dao_children import ChildrenDao
+from .dao_instances import CompletionEventsDao, QuestInstancesDao
+from .dao_presence import PresenceOverridesDao, PresenceSchedulesDao
+from .dao_rules import QuestDefinitionsDao
+from .db import NestQuestDatabase
+from .presence import (
+    MAX_PREVIEW_SCAN_DAYS,
+    PresenceEngine,
+    PresenceOverride,
+    PresenceSchedule,
+)
+from .settings import NestQuestSettings
+
+
+@dataclass(frozen=True)
+class QuestInstanceView:
+    """One instance plus everything the entities render from it."""
+
+    instance_id: int
+    definition_id: int
+    child_id: int
+    title: str
+    icon: str | None
+    window: str
+    due_date: str
+    due_time: str | None
+    state: str  # open | done | missed
+    overdue: bool
+    completed_at: str | None
+    was_on_time: bool | None
+
+
+@dataclass(frozen=True)
+class ChildDaySnapshot:
+    """One active child's day: instances, presence, and rollup counts."""
+
+    child_id: int
+    child_name: str
+    instances: tuple[QuestInstanceView, ...]
+    present: bool
+    due_today: int
+    completed_today: int
+    remaining_today: int
+    completion_pct: int
+    #: For a child away today: the ISO date of their next present day
+    #: (the panel's away plate renders ``Returns <weekday>, <Mon D>``
+    #: from it).  ``None`` when the child is present today or no
+    #: present day exists within the presence engine's scan cap.
+    next_present: str | None = None
+
+
+@dataclass(frozen=True)
+class NestQuestSnapshot:
+    """The coordinator's whole-entity data payload."""
+
+    today_iso: str
+    children: tuple[ChildDaySnapshot, ...]
+    cycle_day: int
+
+
+def _cycle_day(
+    schedules: dict[int, PresenceSchedule], children, today: datetime.date
+) -> int:
+    """Return today's 1-based day in the first scheduled child's cycle.
+
+    Anchor-date arithmetic ONLY (D-004): the day offset is computed from
+    the schedule's own anchor, never ISO week numbers or parity, so a
+    53-week year cannot silently invert the cycle.
+    """
+    for child in children:
+        schedule = schedules.get(child.id)
+        if schedule is None:
+            continue
+        days = (today - schedule.anchor_date).days
+        cycle_length = schedule.cycle_length_weeks * 7
+        return (days % cycle_length) + 1
+    return 0
+
+
+def instance_payload(
+    instances: Iterable[QuestInstanceView], *, include_missed: bool
+) -> list[dict[str, Any]]:
+    """Shape instance dicts per ENTITIES-AND-SERVICES.md §1.
+
+    The panel payload ``state`` is the documented ``open`` | ``completed``
+    spelling, so the builder's derived ``done`` maps to ``completed`` here;
+    ``open`` passes through.  ``missed`` instances are OMITTED from the
+    entity-facing attribute payload (decision 5) unless ``include_missed``
+    is set — the admin payload (D-009) keeps them with their ``missed``
+    state.  ``on_time`` passes the builder's ``was_on_time`` through
+    verbatim (``True`` / ``False`` for a completed instance, ``None`` for
+    an open one).  This is the SINGLE shared implementation both the HA
+    sensor layer and the API panel route read; it touches no Home
+    Assistant surface.
+    """
+    payload: list[dict[str, Any]] = []
+    for view in instances:
+        if view.state == "missed" and not include_missed:
+            continue
+        payload.append(
+            {
+                "id": view.instance_id,
+                "definition_id": view.definition_id,
+                "child_id": view.child_id,
+                "title": view.title,
+                "icon": view.icon,
+                "window": view.window,
+                "due_time": view.due_time,
+                "state": (
+                    "completed" if view.state == "done" else view.state
+                ),
+                "overdue": view.overdue,
+                "completed_at": view.completed_at,
+                "on_time": view.was_on_time,
+            }
+        )
+    return payload
+
+
+async def build_snapshot(
+    database: NestQuestDatabase,
+    settings: NestQuestSettings,
+    now: datetime.datetime,
+) -> NestQuestSnapshot:
+    """Build the household panel snapshot for ``today`` at the ``now`` instant.
+
+    Mirrors the assembly that lived in the coordinator's
+    ``_async_update_data``: active children in sort order, each child's
+    today-instances with derived state (open / done / missed via
+    :func:`~.completion.derive_state`) and the overdue flag, per-child
+    presence (resolved through :class:`~.presence.PresenceEngine`), the
+    per-child rollup counts, and the custody cycle day of the first
+    scheduled active child.  Missed instances are retained on the
+    snapshot (the rollup counts and the panel's missed plate need them)
+    but the entity-facing attribute payload omits them at the
+    :func:`instance_payload` layer — this builder produces the shared
+    shape both consumers read.
+
+    ``now`` is the HA-local timezone-aware datetime the caller already
+    resolved (a SINGLE clock read); the overdue check compares
+    ``now.time()`` against the instance's ``due_time`` for today's open
+    instances.  The builder performs NO internal clock read — it never
+    calls :func:`datetime.datetime.now` — so the instant is pinned in
+    tests.  ``today`` is derived INSIDE the builder as ``now.date()``,
+    so the calendar date that anchors the due-date and cycle-day
+    arithmetic is always the SAME clock read as the wall-clock time;
+    the two can never disagree.  ``settings`` is accepted but currently
+    unused (see the module docstring).
+    """
+    today = now.date()
+    today_iso = today.isoformat()
+
+    children = await ChildrenDao(database).list_active()
+
+    schedules: dict[int, PresenceSchedule] = {}
+    overrides: dict[int, list[PresenceOverride]] = {}
+    for child in children:
+        schedule = await PresenceSchedulesDao(database).get_by_child(
+            child.id
+        )
+        if schedule is not None:
+            schedules[child.id] = PresenceSchedule.decode(
+                child.id, schedule.anchor_date, schedule.pattern
+            )
+        window_end = today + datetime.timedelta(
+            days=MAX_PREVIEW_SCAN_DAYS
+        )
+        window_end_iso = window_end.isoformat()
+        ranged = await PresenceOverridesDao(
+            database
+        ).list_by_child_and_range(child.id, today_iso, window_end_iso)
+        if ranged:
+            # The engine validates MODEL objects, not DAO records;
+            # each record converts losslessly (the schema guarantees
+            # end >= start and a real is_present).
+            overrides[child.id] = [
+                PresenceOverride(
+                    record.child_id,
+                    record.start_date,
+                    record.end_date,
+                    record.is_present,
+                    record.note,
+                )
+                for record in ranged
+            ]
+    engine = PresenceEngine(schedules, overrides)
+
+    instances_dao = QuestInstancesDao(database)
+    events_dao = CompletionEventsDao(database)
+    definitions_dao = QuestDefinitionsDao(database)
+
+    snapshots: list[ChildDaySnapshot] = []
+    for child in children:
+        instances = await instances_dao.list_by_date_range(
+            child.id, today_iso, today_iso
+        )
+        views: list[QuestInstanceView] = []
+        for instance in instances:
+            latest = await events_dao.get_latest_for_instance(instance.id)
+            definition = await definitions_dao.get(instance.definition_id)
+            state = derive_state(instance, latest, today)
+            overdue = False
+            if state == "open" and instance.due_date == today_iso:
+                if instance.due_time is not None:
+                    due_moment = datetime.datetime.strptime(
+                        instance.due_time, "%H:%M"
+                    ).time()
+                    overdue = now.time() > due_moment
+            views.append(
+                QuestInstanceView(
+                    instance_id=instance.id,
+                    definition_id=instance.definition_id,
+                    child_id=instance.child_id,
+                    title=definition.title if definition else "Quest",
+                    icon=definition.icon if definition else None,
+                    window=instance.window,
+                    due_date=instance.due_date,
+                    due_time=instance.due_time,
+                    state=state,
+                    overdue=overdue,
+                    completed_at=(
+                        latest.occurred_at
+                        if latest is not None
+                        and latest.event_type == "completed"
+                        else None
+                    ),
+                    was_on_time=(
+                        latest.was_on_time
+                        if latest is not None
+                        and latest.event_type == "completed"
+                        else None
+                    ),
+                )
+            )
+        due = len(views)
+        completed = sum(1 for view in views if view.state == "done")
+        remaining = due - completed
+        child_present = engine.is_present(child.id, today)
+        next_present: str | None = None
+        if not child_present:
+            try:
+                next_present = engine.next_present_dates(
+                    child.id, today, 1
+                )[0].isoformat()
+            except ValueError:
+                next_present = None
+        snapshots.append(
+            ChildDaySnapshot(
+                child_id=child.id,
+                child_name=child.display_name,
+                instances=tuple(views),
+                present=child_present,
+                due_today=due,
+                completed_today=completed,
+                remaining_today=remaining,
+                completion_pct=(
+                    round(completed * 100 / due) if due else 100
+                ),
+                next_present=next_present,
+            )
+        )
+
+    return NestQuestSnapshot(
+        today_iso=today_iso,
+        children=tuple(snapshots),
+        cycle_day=_cycle_day(schedules, children, today),
+    )

custom_components/nestquest/core/store.py

@@ -0,0 +1,30 @@
+"""SQLite storage path resolution for the NestQuest storage layer.
+
+Home-Assistant-free: callers resolve the database file location from
+their own config (HA resolves it from ``hass.config.path``) and pass
+the full path here; this module ensures the parent directory exists
+off-thread via :func:`asyncio.to_thread` and returns the absolute path.
+"""
+from __future__ import annotations
+
+import asyncio
+from pathlib import Path
+
+
+def _ensure_dir(path: Path) -> None:
+    """Create the given directory and any missing parents."""
+    path.mkdir(parents=True, exist_ok=True)
+
+
+async def async_get_db_path(db_path: Path | str) -> Path:
+    """Return the absolute path to the NestQuest SQLite database file.
+
+    ``db_path`` is the full path to the database file (the integration
+    resolves it from ``hass.config.path(SQLITE_DB_FILENAME)``); the
+    parent directory is created off the event loop via
+    :func:`asyncio.to_thread` so this module never blocks and never
+    imports Home Assistant.
+    """
+    path = Path(db_path).absolute()
+    await asyncio.to_thread(_ensure_dir, path.parent)
+    return path

custom_components/nestquest/core/sweep.py

@@ -0,0 +1,170 @@
+"""The nightly missed-quest sweep, Home-Assistant-free (Feature 11).
+
+This is the HA-free heart of the missed sweep, shared by the two
+planes: the Home Assistant integration's :mod:`~..sweep` shim (which
+fires the returned events on ``hass.bus``) and the API service (which
+publishes them on the SSE stream and can also trigger the run on
+demand).  It owns the ONE sweep policy:
+
+At the configured day-rollover time (or on an explicit trigger) this
+job finds every instance whose ``due_date`` is before the
+household-local date, that has NO completion event, and that falls
+after the persisted sweep watermark — and RETURNS one
+``nestquest_quest_missed`` event per instance with the documented
+payload.  Like every core module, it never touches the Home Assistant
+event bus and never mutates an instance: ``missed`` is derived state,
+never an event_type (Feature 08's contract), so the sweep is read-only
+over the domain tables.
+
+Idempotency is the watermark: after a run, ``nestquest_meta_state``
+records the household-local date the sweep ran, and the next run only
+sweeps instances due in ``[watermark, today)``.  A second run the same
+night therefore fires nothing new, and a run after days of downtime
+sweeps exactly the accumulated window once — no per-instance journal,
+no re-announcing old misses.  An instance swept as missed that is
+later completed simply gains its completion event; history keeps both
+rows (append-only), and the sweep's later runs skip it via the
+no-completion-event rule.
+
+The whole watermark read → query → build span runs inside the
+per-database sweep lock (one lock per connection wrapper and running
+loop, the settings store's pattern): an overlapping startup sweep and
+a rollover sweep of the SAME process queue instead of interleaving.
+The announce decision itself is the DATABASE-level claim
+(:meth:`MetaStateDao.claim`), so two PROCESSES sharing one SQLite file
+(the integration's rollover sweep and the API service's scheduler)
+cannot both announce the same missed batch either: both may read the
+old watermark and build the events, but the single conditional upsert
+lets exactly one of them win the claim — the loser returns [] and
+announces nothing.
+
+The caller supplies ``today`` as a plain :class:`datetime.date`: the
+household-local calendar date, read from ``hass.config.time_zone`` by
+the integration or from the API host's local clock by the API.  This
+module never reads a timezone database or config of its own.
+"""
+from __future__ import annotations
+
+import asyncio
+import datetime
+import logging
+
+from .const import EVENT_QUEST_MISSED
+from .dao_meta import MetaStateDao
+from .dao_instances import QuestInstancesDao
+from .db import NestQuestDatabase
+# Intentional intra-package reuse of the shared payload builder: the
+# missed event's payload is the documented §3 instance payload, and
+# building it through the ONE builder keeps this sweep's payloads from
+# drifting from the completion/uncompleted builders' shape.
+from .events import _instance_payload
+
+LOGGER = logging.getLogger(__name__)
+
+#: meta_state key holding the household-local date the sweep last ran.
+SWEEP_WATERMARK_KEY = "missed_sweep_last_run_date"
+
+#: One asyncio.Lock per (connection wrapper, running loop), mirroring
+#: the settings store's pattern: the watermark read → query → build
+#: span is one critical section, so an overlapping startup sweep and
+#: rollover sweep of the SAME process queue instead of interleaving.
+#: Same-process callers are fully serialised by it; the cross-process
+#: case is closed by the database-level claim, not by this lock.
+_SWEEP_LOCKS: dict[tuple[int, int], asyncio.Lock] = {}
+
+
+def _sweep_lock(database: NestQuestDatabase) -> asyncio.Lock:
+    """Return the sweep lock bound to ``database``'s running loop."""
+    loop = asyncio.get_running_loop()
+    key = (id(database), id(loop))
+    lock = _SWEEP_LOCKS.get(key)
+    if lock is None:
+        lock = asyncio.Lock()
+        _SWEEP_LOCKS[key] = lock
+    return lock
+
+
+#: Strict UTC ISO-8601 timestamp (the DAO layers' policy): one shape,
+#: explicit offset, second precision.
+_UTC_TIMESTAMP_FORMAT = "%Y-%m-%dT%H:%M:%S+00:00"
+
+
+async def run_missed_sweep(
+    database: NestQuestDatabase,
+    *,
+    today: datetime.date,
+) -> list[tuple[str, dict]]:
+    """Build one missed event per unswept past-due open instance.
+
+    ``today`` is the household-local calendar date the sweep runs for
+    (the caller owns the clock: the integration reads it from
+    ``hass.config.time_zone``, the API from its host's local time).
+    Returns the ``(event_type, payload)`` tuples to announce, EMPTY
+    when the watermark already covers ``today`` (a same-night rerun) —
+    the caller decides how to publish them and announces nothing on
+    its own.
+
+    The watermark read → query → build span runs inside the
+    per-database sweep lock, so overlapping callers of ONE process
+    queue instead of interleaving.  The announce decision is the
+    DATABASE-level claim (:meth:`MetaStateDao.claim` — a single
+    conditional upsert on the watermark, atomic across processes):
+    every caller builds the events optimistically, then only the
+    caller whose claim actually advanced the watermark returns them;
+    a loser (another process already announced for ``today``) returns
+    [] and announces nothing twice.  Every event in one run shares one
+    ``occurred_at`` stamp (one run, one announcement moment), and the
+    payload comes from the shared
+    :func:`~.events._instance_payload` builder so the shape can never
+    drift from the documented §3 contract.
+
+    Failure ordering: the watermark is advanced ONLY by the claim,
+    AFTER the events are fully built — a failure before the claim
+    leaves the watermark unadvanced, so a later run re-sweeps the same
+    window and nothing is lost.
+    """
+    today_iso = today.isoformat()
+    dao = MetaStateDao(database)
+    async with _sweep_lock(database):
+        watermark = await dao.get(SWEEP_WATERMARK_KEY)
+        if watermark == today_iso:
+            LOGGER.debug(
+                "NestQuest missed sweep already ran for %s", today_iso
+            )
+            return []
+
+        instances_dao = QuestInstancesDao(database)
+        rows = await instances_dao.list_missed_unswept(today_iso, watermark)
+        now_stamp = datetime.datetime.now(datetime.timezone.utc).strftime(
+            _UTC_TIMESTAMP_FORMAT
+        )
+        events: list[tuple[str, dict]] = []
+        for instance in rows:
+            events.append(
+                (
+                    EVENT_QUEST_MISSED,
+                    await _instance_payload(
+                        database, instance.id, now_stamp
+                    ),
+                )
+            )
+        # The database-level claim gates the announcement: only the
+        # caller that actually advanced the watermark may publish the
+        # built events, so two processes racing one SQLite file cannot
+        # both announce the same missed batch.  A same-value loser's
+        # claim matches zero rows and this run announces nothing.
+        claimed = await dao.claim(SWEEP_WATERMARK_KEY, today_iso)
+        if not claimed:
+            LOGGER.info(
+                "NestQuest missed sweep for %s lost the watermark claim; "
+                "announcing nothing",
+                today_iso,
+            )
+            return []
+    LOGGER.info(
+        "NestQuest missed sweep for %s built %d event(s)",
+        today_iso,
+        len(events),
+    )
+    return events
+

custom_components/nestquest/dao_rules.py

@@ -1,661 +0,0 @@
-"""Typed DAO layer for the schedule_rules, quest_definitions and
-quest_definition_assignees tables.
-
-All SQL for ``schedule_rules``, ``quest_definitions`` and
-``quest_definition_assignees`` lives in this module per the feature
-guardrails: callers get typed dataclasses back and never see raw rows
-or SQL.  Every method is async and runs through
-:class:`~.db.NestQuestDatabase`, so each statement executes on the HA
-executor and the event loop never blocks.
-
-Guardrail mapping:
-
-- ``schedule_rules`` deletion is delete-if-unreferenced: a rule still
-  referenced by any quest definition is rejected (the done-condition),
-  not cascaded.
-- ``quest_definitions`` has no delete path at all: definitions are
-  deactivated, never hard-deleted, and history must survive.
-- Assignment is multi-assignee (D-008): :meth:`add_assignee` and
-  :meth:`remove_assignee` change future instances only — the DAO writes
-  the assignee table and nothing else; assignment edits never rewrite
-  existing instances or completion history (Feature 06 guardrail).
-- Validation of rule well-formedness and child activeness lives partly
-  in the schema CHECKs (rule-type coherence) and partly in
-  :meth:`QuestDefinitionsDao.create` (rule existence) and
-  :meth:`QuestDefinitionsDao.add_assignee` (active child); no
-  permission checks here, that is the Feature 09 gate's job.
-
-Concurrency: ``delete_rule_if_unreferenced`` and the assignee
-mutations perform their checks and writes inside one transaction under
-the connection-scoped lock shared with :mod:`.dao_children`, so a
-definition referencing the rule (or an assignee appearing) cannot slip
-in between check and write on this connection.
-"""
-from __future__ import annotations
-
-import datetime
-from dataclasses import dataclass
-
-from .const import QUEST_WINDOWS
-from .dao_children import ChildRecord, _child_from_row, _connection_lock
-from .dao_children import _CHILD_COLUMNS
-from .db import NestQuestDatabase
-
-#: Sentinel distinguishing "argument omitted" from "explicit SQL NULL"
-#: in update methods: passing ``None`` must mean clearing a nullable
-#: column, not skipping it.
-_UNSET = object()
-
-#: Date-shape policy: schedule-rule dates are ISO YYYY-MM-DD.  The
-#: schema's lexical end>=start CHECK cannot prove a value is a real
-#: calendar date, so the DAO validates the shape it accepts.
-_DATE_FORMAT = "%Y-%m-%d"
-
-
-def _validate_date(value: str, field: str) -> None:
-    """Raise ValueError unless ``value`` is a YYYY-MM-DD calendar date.
-
-    ``datetime.date.fromisoformat`` accepts ISO dates but is lenient on
-    some builds (e.g. '2026-9-4'); strptime with an exact format is
-    strict, and strptime round-trips the parsed value to reject zero
-    padding ('2026-9-4' parses but its isoformat differs).
-    """
-    try:
-        parsed = datetime.datetime.strptime(value, _DATE_FORMAT).date()
-    except (TypeError, ValueError):
-        raise ValueError(
-            f"{field} must be an ISO date (YYYY-MM-DD), got {value!r}"
-        ) from None
-    if parsed.isoformat() != value:
-        raise ValueError(
-            f"{field} must be a strict YYYY-MM-DD date, got {value!r}"
-        )
-
-
-_TIME_FORMAT = "%H:%M"
-
-
-def _validate_time(value: str, field: str) -> None:
-    """Raise ValueError unless ``value`` is a strict 24-hour HH:MM.
-
-    Same strictness policy as _validate_date: parse with the exact
-    format, then round-trip so '9:30' (non-padded) is rejected.  Time
-    shapes are caller-side policy (the schema stores TEXT): windows'
-    optional ``due_time`` and definition ``due_time`` both use this.
-    """
-    try:
-        parsed = datetime.datetime.strptime(value, _TIME_FORMAT).time()
-    except (TypeError, ValueError):
-        raise ValueError(
-            f"{field} must be a 24-hour HH:MM time, got {value!r}"
-        ) from None
-    if parsed.strftime(_TIME_FORMAT) != value:
-        raise ValueError(
-            f"{field} must be a strict HH:MM time, got {value!r}"
-        )
-
-
-def _validate_window(window: str) -> None:
-    """Raise ValueError unless ``window`` is a ``const`` window name."""
-    if window not in QUEST_WINDOWS:
-        raise ValueError(
-            f"window must be one of {', '.join(QUEST_WINDOWS)}, "
-            f"got {window!r}"
-        )
-
-
-@dataclass(frozen=True)
-class ScheduleRuleRecord:
-    """One row of ``schedule_rules``."""
-
-    id: int
-    rule_type: str
-    interval: int
-    weekday_set: str | None
-    day_of_month: int | None
-    nth_weekday: int | None
-    month: int | None
-    start_date: str
-    end_date: str | None
-
-
-@dataclass(frozen=True)
-class QuestDefinitionRecord:
-    """One row of ``quest_definitions`` (without its assignees)."""
-
-    id: int
-    title: str
-    description: str | None
-    icon: str | None
-    schedule_rule_id: int
-    due_time: str | None
-    is_active: bool
-    created_at: str
-
-
-@dataclass(frozen=True)
-class QuestDefinitionWindowRecord:
-    """One row of ``quest_definition_windows``."""
-
-    definition_id: int
-    window: str
-    due_time: str | None
-
-
-_RULE_COLUMNS = (
-    "id, rule_type, interval, weekday_set, day_of_month, nth_weekday, "
-    "month, start_date, end_date"
-)
-_DEFINITION_COLUMNS = (
-    "id, title, description, icon, schedule_rule_id, due_time, "
-    "is_active, created_at"
-)
-_WINDOW_COLUMNS = "definition_id, window, due_time"
-
-
-def _rule_from_row(row: tuple) -> ScheduleRuleRecord:
-    return ScheduleRuleRecord(
-        id=row[0],
-        rule_type=row[1],
-        interval=row[2],
-        weekday_set=row[3],
-        day_of_month=row[4],
-        nth_weekday=row[5],
-        month=row[6],
-        start_date=row[7],
-        end_date=row[8],
-    )
-
-
-def _definition_from_row(row: tuple) -> QuestDefinitionRecord:
-    return QuestDefinitionRecord(
-        id=row[0],
-        title=row[1],
-        description=row[2],
-        icon=row[3],
-        schedule_rule_id=row[4],
-        due_time=row[5],
-        is_active=bool(row[6]),
-        created_at=row[7],
-    )
-
-
-def _window_from_row(row: tuple) -> QuestDefinitionWindowRecord:
-    return QuestDefinitionWindowRecord(
-        definition_id=row[0],
-        window=row[1],
-        due_time=row[2],
-    )
-
-
-class ScheduleRulesDao:
-    """Typed async access to the ``schedule_rules`` table."""
-
-    def __init__(self, database: NestQuestDatabase) -> None:
-        self._database = database
-
-    async def create(
-        self,
-        rule_type: str,
-        start_date: str,
-        *,
-        interval: int = 1,
-        weekday_set: str | None = None,
-        day_of_month: int | None = None,
-        nth_weekday: int | None = None,
-        month: int | None = None,
-        end_date: str | None = None,
-    ) -> ScheduleRuleRecord:
-        """Insert one rule and return the record as stored.
-
-        Rule-type coherence (a weekly rule needs ``weekday_set``, a
-        yearly rule needs ``month``, etc.) is enforced by the schema
-        CHECKs and surfaces as :class:`sqlite3.IntegrityError`.  Date
-        shape (strict YYYY-MM-DD) is validated here because the
-        schema's lexical end>=start CHECK cannot prove a real calendar
-        date.
-        """
-        _validate_date(start_date, "start_date")
-        if end_date is not None:
-            _validate_date(end_date, "end_date")
-        result = await self._database.execute(
-            "INSERT INTO schedule_rules (rule_type, interval, weekday_set, "
-            "day_of_month, nth_weekday, month, start_date, end_date) "
-            "VALUES (?, ?, ?, ?, ?, ?, ?, ?)",
-            (
-                rule_type,
-                interval,
-                weekday_set,
-                day_of_month,
-                nth_weekday,
-                month,
-                start_date,
-                end_date,
-            ),
-        )
-        rule = await self.get(result.lastrowid)
-        assert rule is not None
-        return rule
-
-    async def get(self, rule_id: int) -> ScheduleRuleRecord | None:
-        """Return the rule with ``rule_id``, or None."""
-        row = await self._database.fetch_one(
-            f"SELECT {_RULE_COLUMNS} FROM schedule_rules WHERE id = ?",
-            (rule_id,),
-        )
-        return _rule_from_row(row) if row is not None else None
-
-    async def update(
-        self,
-        rule_id: int,
-        *,
-        rule_type: str | None | object = _UNSET,
-        interval: int | None | object = _UNSET,
-        weekday_set: str | None | object = _UNSET,
-        day_of_month: int | None | object = _UNSET,
-        nth_weekday: int | None | object = _UNSET,
-        month: int | None | object = _UNSET,
-        start_date: str | None | object = _UNSET,
-        end_date: str | None | object = _UNSET,
-    ) -> int:
-        """Update the given fields; returns rows updated (0 if absent).
-
-        Arguments default to the module sentinel ``_UNSET`` meaning
-        "leave this column alone"; passing ``None`` explicitly writes
-        SQL NULL, so callers can reopen an ended rule (``end_date``
-        back to NULL) or clear nullable shape fields.  Passing
-        ``None``/a new value for a date field validates its shape.
-        Editing a rule that a definition references changes future
-        materializations only — this method touches no instances
-        (Feature 06/07 separation).
-        """
-        date_args = (
-            ("start_date", start_date),
-            ("end_date", end_date),
-        )
-        for field, value in date_args:
-            if value is not _UNSET and value is not None:
-                _validate_date(value, field)
-        assignments: list[str] = []
-        parameters: list[object] = []
-        for column, value in (
-            ("rule_type", rule_type),
-            ("interval", interval),
-            ("weekday_set", weekday_set),
-            ("day_of_month", day_of_month),
-            ("nth_weekday", nth_weekday),
-            ("month", month),
-            ("start_date", start_date),
-            ("end_date", end_date),
-        ):
-            if value is not _UNSET:
-                assignments.append(f"{column} = ?")
-                parameters.append(value)
-        if not assignments:
-            return 0
-        parameters.append(rule_id)
-        result = await self._database.execute(
-            f"UPDATE schedule_rules SET {', '.join(assignments)} "
-            "WHERE id = ?",
-            tuple(parameters),
-        )
-        return result.rowcount
-
-    async def delete_if_unreferenced(self, rule_id: int) -> bool:
-        """Delete the rule only if no definition references it.
-
-        Returns True if the rule was deleted, False if it is still
-        referenced (or does not exist — distinguish via :meth:`get`).
-        The reference check and the DELETE run inside one transaction
-        under the connection lock, so a definition cannot start
-        referencing the rule between the check and the delete.
-        """
-        async with _connection_lock(self._database):
-            async with self._database.transaction():
-                row = await self._database.fetch_one(
-                    "SELECT 1 FROM quest_definitions "
-                    "WHERE schedule_rule_id = ? LIMIT 1",
-                    (rule_id,),
-                )
-                if row is not None:
-                    return False
-                result = await self._database.execute(
-                    "DELETE FROM schedule_rules WHERE id = ?",
-                    (rule_id,),
-                )
-                return result.rowcount > 0
-
-
-class QuestDefinitionsDao:
-    """Typed async access to ``quest_definitions`` and its assignees.
-
-    No delete method exists: definitions are deactivated via
-    :meth:`set_active`, never hard-deleted, so completion history keeps
-    its references (feature guardrail).  Assignment is multi-assignee
-    (D-008): the definition row carries no child; assignees live in
-    ``quest_definition_assignees`` and are managed explicitly so the
-    operations stay separately loggable and permission-gateable.
-    """
-
-    def __init__(self, database: NestQuestDatabase) -> None:
-        self._database = database
-
-    async def create(
-        self,
-        title: str,
-        schedule_rule_id: int,
-        created_at: str,
-        *,
-        description: str | None = None,
-        icon: str | None = None,
-        due_time: str | None = None,
-        is_active: bool = True,
-        assignee_child_ids: list[int] | None = None,
-    ) -> QuestDefinitionRecord:
-        """Insert one definition and return the record as stored.
-
-        Validates the schedule rule as part of the same serialized
-        transaction as the insert: the rule must exist AT INSERT TIME —
-        a rule deleted concurrently cannot slip between the check and
-        the INSERT.  ``assignee_child_ids`` (each child must exist and
-        be active) is applied in the same transaction, so a definition
-        can never be observed with a stale or missing assignee set; an
-        empty list or None creates an unassigned definition, which
-        callers may fill via :meth:`add_assignee`.
-        """
-        async with _connection_lock(self._database):
-            async with self._database.transaction():
-                await self._validate_rule_exists(schedule_rule_id)
-                for child_id in assignee_child_ids or []:
-                    await self._validate_assignable_child(child_id)
-                result = await self._database.execute(
-                    "INSERT INTO quest_definitions (title, description, "
-                    "icon, schedule_rule_id, due_time, is_active, "
-                    "created_at) VALUES (?, ?, ?, ?, ?, ?, ?)",
-                    (
-                        title,
-                        description,
-                        icon,
-                        schedule_rule_id,
-                        due_time,
-                        int(is_active),
-                        created_at,
-                    ),
-                )
-                definition_id = result.lastrowid
-                for child_id in assignee_child_ids or []:
-                    await self._database.execute(
-                        "INSERT INTO quest_definition_assignees "
-                        "(definition_id, child_id) VALUES (?, ?)",
-                        (definition_id, child_id),
-                    )
-                definition = await self.get(definition_id)
-        assert definition is not None
-        return definition
-
-    async def _validate_rule_exists(self, schedule_rule_id: int) -> None:
-        """Raise ValueError unless the rule exists.
-
-        MUST be called inside the connection lock so the verdict cannot
-        go stale before the caller's INSERT commits.
-        """
-        rule = await self._database.fetch_one(
-            "SELECT 1 FROM schedule_rules WHERE id = ?",
-            (schedule_rule_id,),
-        )
-        if rule is None:
-            raise ValueError(
-                f"schedule rule {schedule_rule_id} does not exist"
-            )
-
-    async def get(self, definition_id: int) -> QuestDefinitionRecord | None:
-        """Return the definition with ``definition_id``, or None."""
-        row = await self._database.fetch_one(
-            f"SELECT {_DEFINITION_COLUMNS} FROM quest_definitions "
-            "WHERE id = ?",
-            (definition_id,),
-        )
-        return _definition_from_row(row) if row is not None else None
-
-    async def list_by_child(self, child_id: int) -> list[QuestDefinitionRecord]:
-        """Return all definitions assigned to ``child_id``, newest first.
-
-        Assignment is read through ``quest_definition_assignees``
-        (D-008): a definition appears once per child regardless of how
-        many assignees share it.
-        """
-        rows = await self._database.fetch_all(
-            f"SELECT {_DEFINITION_COLUMNS} FROM quest_definitions "
-            "WHERE id IN (SELECT definition_id "
-            "FROM quest_definition_assignees WHERE child_id = ?) "
-            "ORDER BY id DESC",
-            (child_id,),
-        )
-        return [_definition_from_row(row) for row in rows]
-
-    async def list_active(self) -> list[QuestDefinitionRecord]:
-        """Return all active definitions, oldest first (stable order)."""
-        rows = await self._database.fetch_all(
-            f"SELECT {_DEFINITION_COLUMNS} FROM quest_definitions "
-            "WHERE is_active = 1 ORDER BY id"
-        )
-        return [_definition_from_row(row) for row in rows]
-
-    async def update(
-        self,
-        definition_id: int,
-        *,
-        title: str | None | object = _UNSET,
-        description: str | None | object = _UNSET,
-        icon: str | None | object = _UNSET,
-        due_time: str | None | object = _UNSET,
-    ) -> int:
-        """Update the given fields; returns rows updated (0 if absent).
-
-        Arguments default to the module sentinel ``_UNSET`` meaning
-        "leave this column alone"; passing ``None`` explicitly writes
-        SQL NULL, so callers can remove optional metadata
-        (description, icon, due_time).  Assignment and activation are
-        deliberately NOT settable here: they have their own explicit
-        operations (:meth:`add_assignee`, :meth:`remove_assignee`,
-        :meth:`set_active`) so they stay separately loggable and
-        permission-gateable.
-        """
-        assignments: list[str] = []
-        parameters: list[object] = []
-        for column, value in (
-            ("title", title),
-            ("description", description),
-            ("icon", icon),
-            ("due_time", due_time),
-        ):
-            if value is not _UNSET:
-                assignments.append(f"{column} = ?")
-                parameters.append(value)
-        if not assignments:
-            return 0
-        parameters.append(definition_id)
-        result = await self._database.execute(
-            f"UPDATE quest_definitions SET {', '.join(assignments)} "
-            "WHERE id = ?",
-            tuple(parameters),
-        )
-        return result.rowcount
-
-    async def set_active(self, definition_id: int, is_active: bool) -> int:
-        """Deactivate/reactivate; returns rows updated (0 if absent).
-
-        Deactivating stops future instance generation but leaves
-        existing instances and completion history untouched.
-        """
-        result = await self._database.execute(
-            "UPDATE quest_definitions SET is_active = ? WHERE id = ?",
-            (int(is_active), definition_id),
-        )
-        return result.rowcount
-
-    async def add_assignee(
-        self, definition_id: int, child_id: int
-    ) -> None:
-        """Assign ``child_id`` to the definition (idempotent).
-
-        Validates the assignee inside the same serialized transaction
-        as the INSERT (existing and active AT ASSIGNMENT TIME), so a
-        child deactivated concurrently cannot become an assignee.
-        Assigning an already-assigned child is a no-op, mirroring the
-        composite primary key's storage-level guarantee.  Changes
-        future instances only: already-generated instances and
-        completion history are never rewritten here.
-        """
-        async with _connection_lock(self._database):
-            async with self._database.transaction():
-                await self._validate_assignable_child(child_id)
-                definition = await self._database.fetch_one(
-                    "SELECT 1 FROM quest_definitions WHERE id = ?",
-                    (definition_id,),
-                )
-                if definition is None:
-                    raise ValueError(
-                        f"quest definition {definition_id} does not exist"
-                    )
-                await self._database.execute(
-                    "INSERT INTO quest_definition_assignees "
-                    "(definition_id, child_id) VALUES (?, ?) "
-                    "ON CONFLICT (definition_id, child_id) DO NOTHING",
-                    (definition_id, child_id),
-                )
-
-    async def remove_assignee(
-        self, definition_id: int, child_id: int
-    ) -> bool:
-        """Remove the assignee link; True when a row was removed.
-
-        Future materialization stops for this (definition, child) pair;
-        existing instances and completion history are never touched
-        here (Feature 06 guardrail).
-        """
-        async with _connection_lock(self._database):
-            result = await self._database.execute(
-                "DELETE FROM quest_definition_assignees "
-                "WHERE definition_id = ? AND child_id = ?",
-                (definition_id, child_id),
-            )
-        return result.rowcount > 0
-
-    async def list_assignees(self, definition_id: int) -> list[ChildRecord]:
-        """Return the definition's assignees as child records.
-
-        Ordered by the children table's stable display order
-        (``sort_order``, then id) so callers render a deterministic
-        roster.  A definition with no assignees returns [].
-        """
-        rows = await self._database.fetch_all(
-            f"SELECT {_CHILD_COLUMNS} FROM children "
-            "WHERE id IN (SELECT child_id "
-            "FROM quest_definition_assignees WHERE definition_id = ?) "
-            "ORDER BY sort_order, id",
-            (definition_id,),
-        )
-        return [_child_from_row(row) for row in rows]
-
-    async def upsert_window(
-        self,
-        definition_id: int,
-        window: str,
-        *,
-        due_time: str | None = None,
-    ) -> QuestDefinitionWindowRecord:
-        """Declare (or re-declare) ``window`` on the definition.
-
-        The composite primary key makes the write idempotent per
-        (definition, window): re-declaring updates ``due_time`` in
-        place instead of duplicating.  The window name must be one of
-        ``const.QUEST_WINDOWS`` (the schema CHECK backs this up) and a
-        provided ``due_time`` must be strict 24-hour HH:MM.  The
-        definition must exist — validated under the connection lock so
-        the verdict cannot go stale before the write.
-        """
-        _validate_window(window)
-        if due_time is not None:
-            _validate_time(due_time, "due_time")
-        async with _connection_lock(self._database):
-            async with self._database.transaction():
-                definition = await self._database.fetch_one(
-                    "SELECT 1 FROM quest_definitions WHERE id = ?",
-                    (definition_id,),
-                )
-                if definition is None:
-                    raise ValueError(
-                        f"quest definition {definition_id} does not exist"
-                    )
-                await self._database.execute(
-                    "INSERT INTO quest_definition_windows "
-                    "(definition_id, window, due_time) VALUES (?, ?, ?) "
-                    "ON CONFLICT (definition_id, window) DO UPDATE SET "
-                    "due_time = excluded.due_time",
-                    (definition_id, window, due_time),
-                )
-                row = await self._database.fetch_one(
-                    f"SELECT {_WINDOW_COLUMNS} "
-                    "FROM quest_definition_windows "
-                    "WHERE definition_id = ? AND window = ?",
-                    (definition_id, window),
-                )
-        assert row is not None
-        return _window_from_row(row)
-
-    async def list_windows(
-        self, definition_id: int
-    ) -> list[QuestDefinitionWindowRecord]:
-        """Return the definition's windows in ``const`` order.
-
-        Ordered by the canonical window sequence (morning, afternoon,
-        evening) rather than insertion order, so callers always render
-        the Quest Log's three columns consistently.  A definition with
-        no windows returns [].
-        """
-        rows = await self._database.fetch_all(
-            f"SELECT {_WINDOW_COLUMNS} FROM quest_definition_windows "
-            "WHERE definition_id = ?",
-            (definition_id,),
-        )
-        by_name = {row[1]: _window_from_row(row) for row in rows}
-        return [
-            by_name[name]
-            for name in QUEST_WINDOWS
-            if name in by_name
-        ]
-
-    async def remove_window(
-        self, definition_id: int, window: str
-    ) -> bool:
-        """Remove the window declaration; True when a row was removed.
-
-        Future materialization stops producing instances for this
-        (definition, window); existing instances and completion history
-        are never touched here (Feature 06 guardrail).
-        """
-        _validate_window(window)
-        async with _connection_lock(self._database):
-            result = await self._database.execute(
-                "DELETE FROM quest_definition_windows "
-                "WHERE definition_id = ? AND window = ?",
-                (definition_id, window),
-            )
-        return result.rowcount > 0
-
-    async def _validate_assignable_child(self, child_id: int) -> None:
-        """Raise ValueError unless the child exists and is active.
-
-        MUST be called inside the connection lock so the verdict cannot
-        go stale before the caller's INSERT commits.
-        """
-        child = await self._database.fetch_one(
-            "SELECT is_active FROM children WHERE id = ?", (child_id,)
-        )
-        if child is None:
-            raise ValueError(f"child {child_id} does not exist")
-        if not child[0]:
-            raise ValueError(
-                f"child {child_id} is inactive and cannot be assigned"
-            )

custom_components/nestquest/dashboard.py

@@ -0,0 +1,215 @@
+"""Zero-config panel dashboard registration for NestQuest (Feature 20).
+
+On setup the integration registers ONE storage-mode Lovelace dashboard
+whose CONFIG uses the bundle's ``custom:nestquest-party`` strategy (see
+``frontend/src/strategy.ts``): the views themselves are GENERATED at
+render time from the household roster, so the stored dashboard config
+carries nothing but the strategy reference.
+
+Registration mirrors the REAL two-step sequence the lovelace
+integration itself uses when it creates the onboarding map dashboard
+(``homeassistant/components/lovelace/__init__.py``,
+``_create_map_dashboard``):
+
+1. create the dashboard METADATA through the ``DashboardsCollection``
+   (``hass.data["lovelace"]["dashboards_collection"]``) — url_path,
+   title, icon, sidebar visibility.  The strategy reference is NOT part
+   of the create payload: the collection's create schema allows only
+   the metadata fields, so a ``strategy`` key there fails the whole
+   create (this was the silent no-op the first implementation shipped).
+2. save the dashboard CONFIG — ``{"strategy": ...}`` — through the
+   per-url_path CONTENT manager that the collection's change listener
+   registers under ``hass.data["lovelace"]["dashboards"][url_path]``
+   (a ``LovelaceStorage``), exactly the second step HA performs.
+
+Registration is IDEMPOTENT — a dashboard already under the stable
+``url_path`` (ours or a user's) skips BOTH steps and its stored config
+is never overwritten — and the Lovelace surfaces being unavailable
+(YAML mode, lovelace not loaded) is a logged warning, never a setup
+failure.
+"""
+from __future__ import annotations
+
+import asyncio
+
+from homeassistant.core import HomeAssistant
+
+from .const import (
+    DASHBOARD_ICON,
+    DASHBOARD_STRATEGY_TYPE,
+    DASHBOARD_TITLE,
+    DASHBOARD_URL_PATH,
+    LOGGER,
+)
+
+_LOGGER = LOGGER
+
+# Single-flight guard for the check-then-create below: HA can set up
+# several config entries CONCURRENTLY, and two overlapping setups would
+# both pass the exists-check and race on the url_path create.  The lock
+# is per hass instance (kept as an attribute on the hass object, since
+# hass.data is the integrations' shared registry the unload path
+# empties) rather than one module-level asyncio.Lock — a bare
+# module-level lock binds to whichever event loop first awaits it and
+# raises RuntimeError on any other loop, while the race it must prevent
+# only exists between setups running on the SAME hass anyway.
+_REGISTRATION_LOCK_ATTR = "_nestquest_dashboard_registration_lock"
+
+
+def _registration_lock(hass: HomeAssistant) -> asyncio.Lock:
+    """Return the per-hass registration lock, creating it on first use."""
+    lock = getattr(hass, _REGISTRATION_LOCK_ATTR, None)
+    if lock is None:
+        lock = asyncio.Lock()
+        setattr(hass, _REGISTRATION_LOCK_ATTR, lock)
+    return lock
+
+
+def _lovelace_data(hass: HomeAssistant) -> dict | None:
+    """Return ``hass.data["lovelace"]`` when it is the real dict shape.
+
+    The lovelace integration stores a plain DICT of surfaces (``mode``,
+    ``dashboards``, ``dashboards_collection``, ``resources``,
+    ``yaml_dashboards``) under the ``lovelace`` key; anything else
+    (missing key, unexpected object) means the surfaces below cannot be
+    reached and registration must warn and continue.
+    """
+    lovelace_data = hass.data.get("lovelace")
+    if not isinstance(lovelace_data, dict):
+        return None
+    return lovelace_data
+
+
+def _dashboards_collection(hass: HomeAssistant):
+    """Return the Lovelace dashboards METADATA collection, or None.
+
+    The collection lives at ``hass.data["lovelace"]
+    ["dashboards_collection"]`` — NOT under ``["dashboards"]``, which
+    maps url_path to the per-dashboard CONTENT managers
+    (``LovelaceStorage``/``LovelaceYAML``).  A missing key (lovelace
+    not loaded) and a missing/None entry (YAML mode never sets the
+    collection) both mean "cannot create storage dashboards here" —
+    callers log and continue.  The presence of the surface is verified
+    by capability (``async_create_item`` callable), not by type, so no
+    lovelace import is needed.
+    """
+    lovelace_data = _lovelace_data(hass)
+    if lovelace_data is None:
+        return None
+    collection = lovelace_data.get("dashboards_collection")
+    if collection is None or not callable(
+        getattr(collection, "async_create_item", None)
+    ):
+        return None
+    return collection
+
+
+def _dashboard_store(hass: HomeAssistant, url_path: str):
+    """Return a url_path's dashboard CONTENT manager, or None.
+
+    After a metadata create, the collection's change listener registers
+    a ``LovelaceStorage`` for the new dashboard under
+    ``hass.data["lovelace"]["dashboards"][url_path]``; the dashboard
+    CONFIG (the strategy reference) is saved through THAT manager —
+    the second step of HA's own dashboard creation.
+    """
+    lovelace_data = _lovelace_data(hass)
+    if lovelace_data is None:
+        return None
+    dashboards = lovelace_data.get("dashboards")
+    if not isinstance(dashboards, dict):
+        return None
+    store = dashboards.get(url_path)
+    if store is None or not callable(getattr(store, "async_save", None)):
+        return None
+    return store
+
+
+def _item_url_path(item) -> str | None:
+    """Read a dashboard item's ``url_path`` through either access shape.
+
+    The collection hands back storage items as dicts while builtin
+    dashboards come back as config objects; the url_path is reachable
+    through ``item["url_path"]`` or ``item.url_path`` respectively.
+    """
+    url_path = getattr(item, "url_path", None)
+    if isinstance(url_path, str):
+        return url_path
+    get_url_path = getattr(item, "get", None)
+    if callable(get_url_path):
+        value = get_url_path("url_path")
+        if isinstance(value, str):
+            return value
+    return None
+
+
+def _existing_dashboard(items) -> bool:
+    """Whether a dashboard under the stable url_path already exists."""
+    return any(_item_url_path(item) == DASHBOARD_URL_PATH for item in items)
+
+
+async def async_register_dashboard(hass: HomeAssistant) -> bool:
+    """Register the NestQuest panel dashboard exactly once.
+
+    Returns True when a dashboard under the stable ``url_path`` exists
+    after the call (pre-existing or created here), False when the
+    Lovelace surfaces were unavailable or refused.  A dashboard already
+    registered under the stable ``url_path`` — whether ours from a
+    previous setup or a user's own — skips BOTH steps and is left
+    COMPLETELY alone: its stored config is never overwritten, it is
+    never deleted, never a duplicate.  The strategy config is saved
+    ONLY for the dashboard created in THIS call, whose fresh content
+    store is empty, so the save cannot clobber anything.
+    """
+    collection = _dashboards_collection(hass)
+    if collection is None:
+        _LOGGER.warning(
+            "Lovelace dashboards collection unavailable; the NestQuest "
+            "panel dashboard was not registered. Enable the Lovelace "
+            "integration in storage mode or create a dashboard with "
+            "strategy %s manually.",
+            DASHBOARD_STRATEGY_TYPE,
+        )
+        return False
+    try:
+        # Single-flight: two concurrent entry setups must not both pass
+        # the exists-check and race on the url_path create.
+        async with _registration_lock(hass):
+            # async_items() is a SYNC @callback on the real collection
+            # (helpers/collection.py ObservableCollection) — not awaited.
+            if _existing_dashboard(collection.async_items()):
+                return True
+            await collection.async_create_item(
+                {
+                    "url_path": DASHBOARD_URL_PATH,
+                    "title": DASHBOARD_TITLE,
+                    "icon": DASHBOARD_ICON,
+                    "show_in_sidebar": True,
+                    "allow_single_word": True,
+                }
+            )
+            # Step two (mirroring HA's _create_map_dashboard): the
+            # strategy CONFIG goes through the fresh dashboard's
+            # content manager, not through the metadata collection.
+            store = _dashboard_store(hass, DASHBOARD_URL_PATH)
+            if store is None:
+                _LOGGER.warning(
+                    "The NestQuest panel dashboard was registered but its "
+                    "Lovelace content manager never appeared; add the "
+                    "strategy %s to the dashboard manually.",
+                    DASHBOARD_STRATEGY_TYPE,
+                )
+                return False
+            await store.async_save(
+                {"strategy": {"type": DASHBOARD_STRATEGY_TYPE}}
+            )
+    except Exception:
+        _LOGGER.warning(
+            "Registering the NestQuest panel dashboard in the Lovelace "
+            "dashboards collection failed; set it up manually with "
+            "strategy %s.",
+            DASHBOARD_STRATEGY_TYPE,
+            exc_info=True,
+        )
+        return False
+    return True

custom_components/nestquest/frontend.py

@@ -0,0 +1,35 @@
+"""Lovelace card bundle registration for NestQuest."""
+from __future__ import annotations
+
+from pathlib import Path
+
+from homeassistant.components.frontend import add_extra_js_url
+from homeassistant.components.http import StaticPathConfig
+from homeassistant.core import HomeAssistant
+
+WWW_DIR = Path(__file__).parent / "www"
+FRONTEND_URL_BASE = "/nestquest-static"
+BUNDLE_FILENAME = "nestquest-cards.js"
+BUNDLE_URL = f"{FRONTEND_URL_BASE}/{BUNDLE_FILENAME}"
+_REGISTERED_ATTR = "_nestquest_frontend_registered"
+
+
+async def async_register_frontend(hass: HomeAssistant) -> None:
+    """Serve the card bundle and inject it into every Lovelace page.
+
+    Idempotent across config entries: static paths and extra JS URLs are
+    process-global, so a second entry must not register them again.
+    """
+    if getattr(hass, _REGISTERED_ATTR, False):
+        return
+    await hass.http.async_register_static_paths(
+        [
+            StaticPathConfig(
+                FRONTEND_URL_BASE,
+                str(WWW_DIR),
+                cache_headers=False,
+            )
+        ]
+    )
+    add_extra_js_url(hass, BUNDLE_URL)
+    setattr(hass, _REGISTERED_ATTR, True)

custom_components/nestquest/manifest.json

@@ -5,10 +5,15 @@
     "@overseer"
   ],
   "config_flow": true,
-  "documentation": "https://github.com/talon2king/NestQuest",
+  "dependencies": [
+    "frontend",
+    "http",
+    "lovelace"
+  ],
+  "documentation": "https://github.com/Maniacs-Mansion/NestQuest",
   "integration_type": "hub",
   "iot_class": "local_polling",
-  "issue_tracker": "https://github.com/talon2king/NestQuest/issues",
+  "issue_tracker": "https://github.com/Maniacs-Mansion/NestQuest/issues",
   "requirements": [],
-  "version": "0.3.0"
+  "version": "0.6.0"
 }

custom_components/nestquest/options_flow.py

@@ -1,7 +1,17 @@
-"""Options flow for NestQuest post-setup settings."""
+"""Options flow for NestQuest post-setup settings.
+
+Since the DB removal (Feature 18) the integration is a thin client of
+the NestQuest API service: the settings that only served the local
+database (the generation horizon, the day rollover, the notification
+defaults, the admin allowlist) are gone — the API service owns those in
+its own settings store, and the automations take their behaviour from
+blueprint inputs.  What remains is what the CLIENT itself consumes: the
+panel-plane API connection (base URL + token), the shared coordinator's
+refresh interval, the last-good staleness threshold, and the
+panel-facing idle timeout.
+"""
 from __future__ import annotations
 
-import re
 from typing import Any
 
 import voluptuous as vol
@@ -9,41 +19,37 @@ from homeassistant import config_entries
 from homeassistant.data_entry_flow import FlowResult
 
 from .const import (
-    CONF_DAY_ROLLOVER_TIME,
-    CONF_HORIZON_DAYS,
+    CONF_API_BASE_URL,
     CONF_PANEL_IDLE_TIMEOUT,
-    DEFAULT_DAY_ROLLOVER_TIME,
-    DEFAULT_HORIZON_DAYS,
+    CONF_PANEL_TOKEN,
+    CONF_SNAPSHOT_STALENESS,
+    CONF_UPDATE_INTERVAL,
+    DEFAULT_API_BASE_URL,
     DEFAULT_PANEL_IDLE_TIMEOUT,
+    DEFAULT_PANEL_TOKEN,
+    DEFAULT_SNAPSHOT_STALENESS,
+    DEFAULT_UPDATE_INTERVAL,
+    MIN_UPDATE_INTERVAL,
 )
+from .api_client import is_valid_base_url
 
-MIN_HORIZON_DAYS = 1
 MIN_PANEL_IDLE_TIMEOUT = 30
 
-_TIME_PATTERN = re.compile(r"(?:[01]\d|2[0-3]):[0-5]\d")
 
+def _async_validate(
+    user_input: dict[str, Any],
+    current: dict[str, Any] | None = None,
+) -> dict[str, str]:
+    """Validate user input and return field-level errors instead of raising.
 
-def _parse_time(value: str) -> bool:
-    """Return True when value is a valid 24-hour HH:MM string."""
-    return _TIME_PATTERN.fullmatch(value) is not None
-
-
-def _async_validate(user_input: dict[str, Any]) -> dict[str, str]:
-    """Validate user input and return field-level errors instead of raising."""
+    ``current`` carries the stored values (entry options → entry data →
+    defaults) so a raw submit that sets one field but omits a sibling it
+    is validated against (the staleness threshold vs. the update
+    interval) can still check the effective pair; raw submits omitting
+    BOTH keys keep their stored values untouched.
+    """
     errors: dict[str, str] = {}
 
-    horizon_days = user_input.get(CONF_HORIZON_DAYS)
-    if (
-        isinstance(horizon_days, bool)
-        or not isinstance(horizon_days, int)
-        or horizon_days < MIN_HORIZON_DAYS
-    ):
-        errors[CONF_HORIZON_DAYS] = "invalid"
-
-    day_rollover_time = user_input.get(CONF_DAY_ROLLOVER_TIME)
-    if not isinstance(day_rollover_time, str) or not _parse_time(day_rollover_time):
-        errors[CONF_DAY_ROLLOVER_TIME] = "invalid_time"
-
     panel_idle_timeout = user_input.get(CONF_PANEL_IDLE_TIMEOUT)
     if (
         isinstance(panel_idle_timeout, bool)
@@ -52,22 +58,101 @@ def _async_validate(user_input: dict[str, Any]) -> dict[str, str]:
     ):
         errors[CONF_PANEL_IDLE_TIMEOUT] = "invalid"
 
+    # The coordinator refresh interval (Feature 10) is OPTIONAL in raw
+    # submits: a missing key keeps the current value, so pre-Feature-10
+    # form payloads (and API callers) are unaffected.  Schema-validated
+    # submits always carry it.
+    update_interval = user_input.get(CONF_UPDATE_INTERVAL)
+    if update_interval is not None and (
+        isinstance(update_interval, bool)
+        or not isinstance(update_interval, int)
+        or update_interval < MIN_UPDATE_INTERVAL
+    ):
+        errors[CONF_UPDATE_INTERVAL] = "invalid"
+
+    # The last-good staleness threshold (Feature 18) is OPTIONAL in raw
+    # submits the same way: a missing key keeps the current value.  It
+    # must be a positive int, and at least the EFFECTIVE update interval
+    # (the one this submit carries, else the stored or default one) — a
+    # threshold shorter than the poll cadence could never serve even one
+    # cached snapshot.
+    staleness = user_input.get(CONF_SNAPSHOT_STALENESS)
+    if staleness is not None and (
+        isinstance(staleness, bool)
+        or not isinstance(staleness, int)
+        or staleness < 1
+    ):
+        errors[CONF_SNAPSHOT_STALENESS] = "invalid"
+    elif staleness is not None and not errors.get(CONF_UPDATE_INTERVAL):
+        stored_interval = (current or {}).get(CONF_UPDATE_INTERVAL)
+        effective_interval = update_interval
+        if effective_interval is None and (
+            isinstance(stored_interval, int)
+            and not isinstance(stored_interval, bool)
+            and stored_interval >= MIN_UPDATE_INTERVAL
+        ):
+            effective_interval = stored_interval
+        if effective_interval is None:
+            effective_interval = DEFAULT_UPDATE_INTERVAL
+        if staleness < effective_interval:
+            errors[CONF_SNAPSHOT_STALENESS] = "invalid_staleness"
+
+    # The panel-plane API connection (Feature 18) is OPTIONAL in raw
+    # submits the same way: a missing key keeps the current value.  The
+    # base URL must be a full http(s) URL with a host — the same check
+    # the client's constructor enforces, so a malformed URL fails at
+    # the form, not at the first request.  The token may be EMPTY (the
+    # API connection is simply not configured yet) but a non-empty one
+    # must be pasted unpadded: a padded or whitespace-only value is a
+    # clipboard mistake that would fail the token check at request
+    # time.
+    api_base_url = user_input.get(CONF_API_BASE_URL)
+    if api_base_url is not None and not is_valid_base_url(api_base_url):
+        errors[CONF_API_BASE_URL] = "invalid_url"
+    panel_token = user_input.get(CONF_PANEL_TOKEN)
+    if panel_token is not None and (
+        not isinstance(panel_token, str)
+        or panel_token != panel_token.strip()
+    ):
+        errors[CONF_PANEL_TOKEN] = "invalid"
+
     return errors
 
 
 def _build_schema(current: dict[str, Any]) -> vol.Schema:
-    """Build the form schema, pre-filled with the current values."""
+    """Build the form schema, pre-filled with the current values.
+
+    The API connection (Feature 18) carries the base URL the API client
+    talks to and the panel service token it presents as the Bearer
+    credential.  Schema-validated submits always carry every field (the
+    defaults pre-fill from the stored values); raw callers omitting one
+    keep its stored value (see _async_validate).
+    """
     return vol.Schema(
         {
             vol.Required(
-                CONF_HORIZON_DAYS, default=current[CONF_HORIZON_DAYS]
+                CONF_PANEL_IDLE_TIMEOUT,
+                default=current[CONF_PANEL_IDLE_TIMEOUT],
             ): int,
             vol.Required(
-                CONF_DAY_ROLLOVER_TIME, default=current[CONF_DAY_ROLLOVER_TIME]
+                CONF_UPDATE_INTERVAL, default=current[CONF_UPDATE_INTERVAL]
+            ): int,
+            # The last-good staleness threshold (Feature 18): how long
+            # the coordinator keeps serving the cached snapshot after
+            # the API stops answering.
+            vol.Required(
+                CONF_SNAPSHOT_STALENESS,
+                default=current[CONF_SNAPSHOT_STALENESS],
+            ): int,
+            # Panel-plane API connection (Feature 18): the base URL the
+            # API client talks to and the panel service token it
+            # presents as the Bearer credential.
+            vol.Required(
+                CONF_API_BASE_URL, default=current[CONF_API_BASE_URL]
             ): str,
             vol.Required(
-                CONF_PANEL_IDLE_TIMEOUT, default=current[CONF_PANEL_IDLE_TIMEOUT]
-            ): int,
+                CONF_PANEL_TOKEN, default=current[CONF_PANEL_TOKEN]
+            ): str,
         }
     )
 
@@ -81,10 +166,11 @@ class NestQuestOptionsFlow(config_entries.OptionsFlowWithConfigEntry):
         """Manage the NestQuest options."""
         if user_input is None:
             return self.async_show_form(
-                step_id="init", data_schema=_build_schema(self._current_values())
+                step_id="init",
+                data_schema=_build_schema(self._current_values()),
             )
 
-        errors = _async_validate(user_input)
+        errors = _async_validate(user_input, self._current_values())
         if errors:
             return self.async_show_form(
                 step_id="init",
@@ -92,14 +178,20 @@ class NestQuestOptionsFlow(config_entries.OptionsFlowWithConfigEntry):
                 errors=errors,
             )
 
-        return self.async_create_entry(
-            title="NestQuest",
-            data={
-                CONF_HORIZON_DAYS: user_input[CONF_HORIZON_DAYS],
-                CONF_DAY_ROLLOVER_TIME: user_input[CONF_DAY_ROLLOVER_TIME],
-                CONF_PANEL_IDLE_TIMEOUT: user_input[CONF_PANEL_IDLE_TIMEOUT],
-            },
-        )
+        # Every remaining key is stored the fall-back-to-current way, so
+        # raw submits that predate a section keep that section's stored
+        # values.
+        current = self._current_values()
+        data: dict[str, Any] = {}
+        for key in (
+            CONF_PANEL_IDLE_TIMEOUT,
+            CONF_UPDATE_INTERVAL,
+            CONF_SNAPSHOT_STALENESS,
+            CONF_API_BASE_URL,
+            CONF_PANEL_TOKEN,
+        ):
+            data[key] = user_input.get(key, current[key])
+        return self.async_create_entry(title="NestQuest", data=data)
 
     def _current_values(self) -> dict[str, Any]:
         """Resolve current values from entry options, then entry data, then defaults."""
@@ -107,9 +199,11 @@ class NestQuestOptionsFlow(config_entries.OptionsFlowWithConfigEntry):
         entry_data = getattr(self.config_entry, "data", None) or {}
         values: dict[str, Any] = {}
         for key, default in (
-            (CONF_HORIZON_DAYS, DEFAULT_HORIZON_DAYS),
-            (CONF_DAY_ROLLOVER_TIME, DEFAULT_DAY_ROLLOVER_TIME),
             (CONF_PANEL_IDLE_TIMEOUT, DEFAULT_PANEL_IDLE_TIMEOUT),
+            (CONF_UPDATE_INTERVAL, DEFAULT_UPDATE_INTERVAL),
+            (CONF_SNAPSHOT_STALENESS, DEFAULT_SNAPSHOT_STALENESS),
+            (CONF_API_BASE_URL, DEFAULT_API_BASE_URL),
+            (CONF_PANEL_TOKEN, DEFAULT_PANEL_TOKEN),
         ):
             if key in options:
                 values[key] = options[key]
@@ -117,4 +211,4 @@ class NestQuestOptionsFlow(config_entries.OptionsFlowWithConfigEntry):
                 values[key] = entry_data[key]
             else:
                 values[key] = default
-        return values
+        return values

custom_components/nestquest/sensor.py

@@ -0,0 +1,560 @@
+"""Per-child daily count and percentage sensors (Feature 10, task 2).
+
+Naming contract (design/ENTITIES-AND-SERVICES.md §1): the design table
+documents the entity_id shape ``sensor.nestquest_<child>_quests_due_today``.
+Home Assistant derives entity_id from the entity NAME and exact
+entity_id strings are not directly controllable, so names are spelled
+to slug into the documented shape — ``NestQuest Ada quests due today``
+slugs to ``sensor.nestquest_ada_quests_due_today`` — while the
+registry identity (``unique_id``) IS exact: built from the child's
+database id, never the display name, so a rename never orphans an
+entity's history.  The design table is the visual contract; this
+module spells names so HA's default slugging produces it.
+
+Every sensor reads ONLY ``coordinator.data`` (one
+:class:`~.coordinator.ChildDaySnapshot` per active child); no entity
+queries the database, so one refresh updates the whole board
+coherently.  The due-today sensor additionally carries the child's
+day payload as attributes: ``instances`` is the panel shape of
+ENTITIES-AND-SERVICES.md §1 (state ``open``/``completed``) OMITTING
+missed instances, and ``admin_instances`` includes them (D-009).
+"""
+from __future__ import annotations
+
+from collections.abc import Callable, Iterable
+from typing import Any
+
+from homeassistant.components.sensor import (
+    SensorEntity,
+    SensorStateClass,
+)
+from homeassistant.config_entries import ConfigEntry
+from homeassistant.core import HomeAssistant
+from homeassistant.helpers.entity import DeviceInfo
+from homeassistant.helpers.update_coordinator import CoordinatorEntity
+from homeassistant.util import slugify
+
+from .const import DOMAIN
+from .coordinator import (
+    ChildDaySnapshot,
+    NestQuestCoordinator,
+    QuestInstanceView,
+)
+from .core.snapshot import instance_payload
+
+#: HA's state machine refuses states longer than 255
+#: characters (its hard recorder/state limit).  These sensors' states
+#: are numeric, but the guard is applied uniformly: a payload-bearing
+#: sensor can never crash the state write, and later string-state
+#: sensors reuse the same helper.
+MAX_STATE_LENGTH = 255
+
+#: Entity-id length cap the roster applies to HA's slugify: HA's
+#: slugifier itself does NOT truncate, but the entity registry derives
+#: entity ids as ``<domain>.<slug>`` and truncates the full entity_id at
+#: MAX_LENGTH_STATE_ENTITY_ID (64), so for this module's ``sensor.``
+#: entities the slugged object id alone may not exceed
+#: 64 - len("sensor.").
+_MAX_SLUG_LENGTH = 64 - len("sensor.")
+
+
+def _state_within_limit(state: Any) -> Any:
+    """Return ``state`` unchanged, refusing strings over HA's limit.
+
+    Numeric states pass through untouched; a string state longer than
+    :data:`MAX_STATE_LENGTH` fails fast with ValueError at the property
+    read — before HA's state machine rejects the write.
+    """
+    if isinstance(state, str) and len(state) > MAX_STATE_LENGTH:
+        raise ValueError(
+            f"state exceeds Home Assistant's {MAX_STATE_LENGTH}-character "
+            f"limit ({len(state)} characters)"
+        )
+    return state
+
+
+#: State reported by the next-quest sensor when the child owes nothing
+#: else today.  A documented sentinel, never an empty string (an empty
+#: state reads as "sensor went unavailable" in HA).
+NEXT_QUEST_NONE_STATE = "none"
+
+
+def _next_open_quest(
+    child: ChildDaySnapshot,
+) -> QuestInstanceView | None:
+    """Return the child's earliest open quest from today's snapshot.
+
+    The snapshot carries TODAY's instances, so "next" is the earliest
+    open instance by (due_date, due_time), with ``due_time`` ordering
+    ahead of ``None`` (a window with no due time comes first only
+    within the same date — the materializer snapshots each window's
+    due_time, so a missing one means the window is unscheduled).
+    Missed and completed instances never qualify.
+    """
+    open_views = [
+        view
+        for view in child.instances
+        if view.state == "open"
+    ]
+    if not open_views:
+        return None
+    return min(
+        open_views,
+        key=lambda view: (
+            view.due_date,
+            view.due_time if view.due_time is not None else "",
+        ),
+    )
+
+
+def _slugify(text: str) -> str:
+    """Slugify a display name the way Home Assistant derives entity ids.
+
+    Runs ``homeassistant.util.slugify`` — the real slugifier HA runs
+    entity names through, which transliterates every script to ASCII
+    through unidecode (so non-Latin names survive: ``京子`` slugs to
+    ``jing_zi``) before folding to lowercase and turning every run of
+    non-alphanumerics into one underscore, answering HA's ``unknown``
+    sentinel when a name slugs to nothing — then caps the result at
+    the object-id length the entity registry enforces (the registry
+    truncates the full ``sensor.`` + slug entity_id at 64 characters,
+    so the slug alone is capped like this; HA's slugify does not
+    truncate by itself).
+    """
+    return slugify(text)[:_MAX_SLUG_LENGTH]
+
+
+def _child_roster(children: Iterable[ChildDaySnapshot]) -> list[dict[str, Any]]:
+    """The ordered child roster the panel cards discover children from.
+
+    One entry per ACTIVE child in the snapshot's order (the API's
+    sort_order, then id): ``child_id``, ``name``, and the ``slug`` the
+    entity-id derivation produces for the child's name — the piece the
+    cards need to build ``sensor.nestquest_<slug>_...`` ids.  Duplicate
+    display names get the registry's ``_2``/``_3`` suffix in snapshot
+    order, matching how HA resolves the collision at registration.  The
+    rollups' ``children`` attribute (per-child counts) is unchanged and
+    carries a different shape on purpose.
+    """
+    slugs: dict[str, int] = {}
+    roster: list[dict[str, Any]] = []
+    for child in children:
+        base = _slugify(child.child_name)
+        taken = slugs.get(base, 0) + 1
+        slugs[base] = taken
+        roster.append(
+            {
+                "child_id": child.child_id,
+                "name": child.child_name,
+                "slug": base if taken == 1 else f"{base}_{taken}",
+            }
+        )
+    return roster
+
+
+class _NestQuestChildDaySensor(CoordinatorEntity, SensorEntity):
+    """Base for the per-child day sensors.
+
+    Registry identity is built from the child's database id and never
+    changes; the DISPLAYED name and device label are derived from the
+    child's CURRENT snapshot on every read, so a rename through
+    ``manage_child`` propagates on the next refresh without orphaning
+    the entity's history.  A child absent from the latest snapshot (a
+    deactivation; removal is a later task's scope) yields ``None``
+    states rather than stale counts.
+    """
+
+    #: Per-subclass label appended to the name (e.g. ``quests due
+    #: today``), set as a class attribute so ``name`` composes from the
+    #: current snapshot.
+    _name_suffix: str = ""
+
+    def __init__(
+        self,
+        coordinator: NestQuestCoordinator,
+        child: ChildDaySnapshot,
+    ) -> None:
+        super().__init__(coordinator)
+        self._child_id = child.child_id
+        self._fallback_name = child.child_name
+        self._attr_unique_id = None  # set by the subclass
+
+    @property
+    def _child(self) -> ChildDaySnapshot | None:
+        """Return the child's current day snapshot, or None."""
+        data = self.coordinator.data
+        if data is None:
+            return None
+        for child in data.children:
+            if child.child_id == self._child_id:
+                return child
+        return None
+
+    def _displayed_child_name(self) -> str:
+        child = self._child
+        return child.child_name if child is not None else self._fallback_name
+
+    @property
+    def name(self) -> str | None:
+        return f"NestQuest {self._displayed_child_name()} {self._name_suffix}"
+
+    @property
+    def device_info(self) -> DeviceInfo:
+        return DeviceInfo(
+            identifiers={(DOMAIN, f"child_{self._child_id}")},
+            name=f"NestQuest {self._displayed_child_name()}",
+            manufacturer="NestQuest",
+        )
+
+
+class NestQuestQuestsDueTodaySensor(_NestQuestChildDaySensor):
+    """How many quests the child has due today, with the day payload."""
+
+    _attr_state_class = SensorStateClass.MEASUREMENT
+    _name_suffix = "quests due today"
+
+    def __init__(
+        self,
+        coordinator: NestQuestCoordinator,
+        child: ChildDaySnapshot,
+    ) -> None:
+        super().__init__(coordinator, child)
+        self._attr_unique_id = (
+            f"{DOMAIN}_child_{child.child_id}_quests_due_today"
+        )
+
+    @property
+    def native_value(self) -> int | None:
+        child = self._child
+        if child is None:
+            return None
+        return _state_within_limit(child.due_today)
+
+    @property
+    def extra_state_attributes(self) -> dict[str, Any] | None:
+        child = self._child
+        if child is None:
+            return None
+        return {
+            "instances": instance_payload(
+                child.instances, include_missed=False
+            ),
+            "admin_instances": instance_payload(
+                child.instances, include_missed=True
+            ),
+            "child_id": child.child_id,
+            "child_name": child.child_name,
+            "present": child.present,
+        }
+
+
+class NestQuestQuestsCompletedTodaySensor(_NestQuestChildDaySensor):
+    """How many of the child's quests were completed today."""
+
+    _attr_state_class = SensorStateClass.MEASUREMENT
+    _name_suffix = "quests completed today"
+
+    def __init__(
+        self,
+        coordinator: NestQuestCoordinator,
+        child: ChildDaySnapshot,
+    ) -> None:
+        super().__init__(coordinator, child)
+        self._attr_unique_id = (
+            f"{DOMAIN}_child_{child.child_id}_quests_completed_today"
+        )
+
+    @property
+    def native_value(self) -> int | None:
+        child = self._child
+        if child is None:
+            return None
+        return _state_within_limit(child.completed_today)
+
+
+class NestQuestQuestsRemainingTodaySensor(_NestQuestChildDaySensor):
+    """How many of the child's quests are still owed today."""
+
+    _attr_state_class = SensorStateClass.MEASUREMENT
+    _name_suffix = "quests remaining today"
+
+    def __init__(
+        self,
+        coordinator: NestQuestCoordinator,
+        child: ChildDaySnapshot,
+    ) -> None:
+        super().__init__(coordinator, child)
+        self._attr_unique_id = (
+            f"{DOMAIN}_child_{child.child_id}_quests_remaining_today"
+        )
+
+    @property
+    def native_value(self) -> int | None:
+        child = self._child
+        if child is None:
+            return None
+        return _state_within_limit(child.remaining_today)
+
+
+class NestQuestCompletionPctTodaySensor(_NestQuestChildDaySensor):
+    """The child's completion percentage for today (100 on a zero-quest day)."""
+
+    _attr_state_class = SensorStateClass.MEASUREMENT
+    _attr_native_unit_of_measurement = "%"
+    _name_suffix = "completion pct today"
+
+    def __init__(
+        self,
+        coordinator: NestQuestCoordinator,
+        child: ChildDaySnapshot,
+    ) -> None:
+        super().__init__(coordinator, child)
+        self._attr_unique_id = (
+            f"{DOMAIN}_child_{child.child_id}_completion_pct_today"
+        )
+
+    @property
+    def native_value(self) -> int | None:
+        child = self._child
+        if child is None:
+            return None
+        return _state_within_limit(child.completion_pct)
+
+
+class NestQuestNextQuestSensor(_NestQuestChildDaySensor):
+    """The child's next open quest today (title in the state).
+
+    State is the quest TITLE, truncated to HA's 255-character state
+    limit (attributes always carry the full title); when the child
+    owes nothing else today the state is the documented sentinel
+    ``none`` (NEXT_QUEST_NONE_STATE), never an empty string.
+    """
+
+    _attr_state_class = None  # a label, not a measurement
+    _name_suffix = "next quest"
+
+    def __init__(
+        self,
+        coordinator: NestQuestCoordinator,
+        child: ChildDaySnapshot,
+    ) -> None:
+        super().__init__(coordinator, child)
+        self._attr_unique_id = (
+            f"{DOMAIN}_child_{child.child_id}_next_quest"
+        )
+
+    @property
+    def native_value(self) -> str | None:
+        child = self._child
+        if child is None:
+            return None
+        quest = _next_open_quest(child)
+        if quest is None:
+            return NEXT_QUEST_NONE_STATE
+        return quest.title[:MAX_STATE_LENGTH]
+
+    @property
+    def extra_state_attributes(self) -> dict[str, Any] | None:
+        child = self._child
+        if child is None:
+            return None
+        quest = _next_open_quest(child)
+        if quest is None:
+            return {"child_id": child.child_id, "child_name": child.child_name}
+        return {
+            "instance_id": quest.instance_id,
+            "definition_id": quest.definition_id,
+            "child_id": quest.child_id,
+            "child_name": child.child_name,
+            "title": quest.title,
+            "icon": quest.icon,
+            "window": quest.window,
+            "due_date": quest.due_date,
+            "due_time": quest.due_time,
+            "overdue": quest.overdue,
+        }
+
+
+def _child_day_sensors(
+    coordinator: NestQuestCoordinator, child: ChildDaySnapshot
+) -> tuple[_NestQuestChildDaySensor, ...]:
+    """Build the per-child day sensors for one active child."""
+    return (
+        NestQuestQuestsDueTodaySensor(coordinator, child),
+        NestQuestQuestsCompletedTodaySensor(coordinator, child),
+        NestQuestQuestsRemainingTodaySensor(coordinator, child),
+        NestQuestCompletionPctTodaySensor(coordinator, child),
+        NestQuestNextQuestSensor(coordinator, child),
+    )
+
+
+class _NestQuestHouseholdSensor(CoordinatorEntity, SensorEntity):
+    """Base for the household-level rollup sensors.
+
+    Aggregates the ACTIVE children's snapshots only (the snapshot
+    already excludes inactive children), matching the per-child
+    sensors exactly — a household number is always the sum of the
+    per-child numbers.  Grouped under one household device so the
+    three household sensors render together.
+    """
+
+    _attr_name: str
+
+    def __init__(self, coordinator: NestQuestCoordinator) -> None:
+        super().__init__(coordinator)
+        self._attr_device_info = DeviceInfo(
+            identifiers={(DOMAIN, "household")},
+            name="NestQuest Household",
+            manufacturer="NestQuest",
+        )
+
+
+class NestQuestHouseholdDueTodaySensor(_NestQuestHouseholdSensor):
+    """Total quests due today across active children.
+
+    Also publishes ``child_roster`` (see :func:`_child_roster`): the
+    ordered child identity list the panel cards read to discover the
+    board's children when the card config carries no ``child_order``.
+    """
+
+    _attr_name = "NestQuest household quests due today"
+    _attr_state_class = SensorStateClass.MEASUREMENT
+    _attr_unique_id = f"{DOMAIN}_household_quests_due_today"
+
+    @property
+    def native_value(self) -> int | None:
+        data = self.coordinator.data
+        if data is None:
+            return None
+        return _state_within_limit(
+            sum(child.due_today for child in data.children)
+        )
+
+    @property
+    def extra_state_attributes(self) -> dict[str, Any] | None:
+        data = self.coordinator.data
+        if data is None:
+            return None
+        return {
+            "children": {
+                str(child.child_id): child.due_today
+                for child in data.children
+            },
+            "child_roster": _child_roster(data.children),
+        }
+
+
+class NestQuestHouseholdCompletedTodaySensor(_NestQuestHouseholdSensor):
+    """Total quests completed today across active children."""
+
+    _attr_name = "NestQuest household quests completed today"
+    _attr_state_class = SensorStateClass.MEASUREMENT
+    _attr_unique_id = f"{DOMAIN}_household_quests_completed_today"
+
+    @property
+    def native_value(self) -> int | None:
+        data = self.coordinator.data
+        if data is None:
+            return None
+        return _state_within_limit(
+            sum(child.completed_today for child in data.children)
+        )
+
+    @property
+    def extra_state_attributes(self) -> dict[str, Any] | None:
+        data = self.coordinator.data
+        if data is None:
+            return None
+        return {
+            "children": {
+                str(child.child_id): child.completed_today
+                for child in data.children
+            }
+        }
+
+
+class NestQuestCycleDaySensor(_NestQuestHouseholdSensor):
+    """Cycle day N of the custody cycle (0 when nobody is scheduled).
+
+    Computed by the coordinator from the first active child with a
+    presence schedule, anchor-date arithmetic only (D-004 — never ISO
+    week parity), so a 53-week year cannot silently invert it.
+    """
+
+    _attr_name = "NestQuest cycle day"
+    _attr_state_class = SensorStateClass.MEASUREMENT
+    _attr_unique_id = f"{DOMAIN}_cycle_day"
+
+    @property
+    def native_value(self) -> int | None:
+        data = self.coordinator.data
+        if data is None:
+            return None
+        return _state_within_limit(data.cycle_day)
+
+    @property
+    def extra_state_attributes(self) -> dict[str, Any] | None:
+        data = self.coordinator.data
+        if data is None:
+            return None
+        return {"cycle_day": data.cycle_day, "today": data.today_iso}
+
+
+def _household_sensors(
+    coordinator: NestQuestCoordinator,
+) -> tuple[_NestQuestHouseholdSensor, ...]:
+    """Build the three household-level sensors (one set per entry)."""
+    return (
+        NestQuestHouseholdDueTodaySensor(coordinator),
+        NestQuestHouseholdCompletedTodaySensor(coordinator),
+        NestQuestCycleDaySensor(coordinator),
+    )
+
+
+async def async_setup_entry(
+    hass: HomeAssistant,
+    entry: ConfigEntry,
+    async_add_entities: Callable[..., None],
+) -> None:
+    """Create the five day sensors per active child.
+
+    Entities are created for the snapshot's children at platform
+    setup; a coordinator listener adds sensors for children that
+    first appear on a later refresh.  Deactivated children are NOT
+    removed here — their sensors hold ``None`` states until the
+    entity-removal task lands.
+    """
+    coordinator = entry.runtime_data.coordinator
+    known_child_ids: set[int] = set()
+
+    def _add_new_children(children: Iterable[ChildDaySnapshot]) -> None:
+        new_children = [
+            child
+            for child in children
+            if child.child_id not in known_child_ids
+        ]
+        if not new_children:
+            return
+        known_child_ids.update(child.child_id for child in new_children)
+        async_add_entities(
+            [
+                sensor
+                for child in new_children
+                for sensor in _child_day_sensors(coordinator, child)
+            ]
+        )
+
+    data = coordinator.data
+    if data is not None:
+        _add_new_children(data.children)
+        # The household rollups are child-independent: created exactly
+        # once at platform setup, they aggregate whatever the snapshot
+        # carries (empty included — an empty household is a valid 0).
+        async_add_entities(_household_sensors(coordinator))
+
+    def _handle_coordinator_update() -> None:
+        data = coordinator.data
+        if data is not None:
+            _add_new_children(data.children)
+
+    coordinator.async_add_listener(_handle_coordinator_update)

custom_components/nestquest/services.py

@@ -0,0 +1,190 @@
+"""The domain-global ``nestquest.complete_quest`` service (Feature 18).
+
+Registration is domain-scoped and happens once (see
+:func:`async_register_services`).  Since Feature 18 the integration is
+a client of the NestQuest API service, so ``complete_quest`` proxies
+to the API's panel complete route through the entry's shared API
+client instead of writing any database.  The former HA admin services
+(uncomplete, quest-definition and presence management, CSV export,
+child management, regenerate) are removed: the admin surface is the
+PWA and the API service's admin routes, so the only HA service left is
+the panel completion path.
+"""
+from __future__ import annotations
+
+from collections.abc import Awaitable, Callable
+from typing import Any
+
+import voluptuous as vol
+from homeassistant.core import HomeAssistant
+from homeassistant.exceptions import HomeAssistantError
+
+from .api_client import NestQuestApiError
+from .const import (
+    DOMAIN,
+    DOMAIN_SERVICES,
+    SERVICE_COMPLETE_QUEST,
+)
+
+FindRuntime = Callable[[HomeAssistant], Any]
+ServiceHandler = Callable[[Any], Awaitable[None]]
+
+ACTOR_PANEL = "panel"
+ACTOR_USER = "user"
+
+
+def _strict_int(value: object) -> int:
+    """Reject bools and non-ints; voluptuous ``int`` would accept True."""
+    if isinstance(value, bool) or not isinstance(value, int):
+        raise vol.Invalid(f"expected int, got {value!r}")
+    return value
+
+
+SCHEMA_COMPLETE_QUEST = vol.Schema(
+    {
+        vol.Required("instance_id"): _strict_int,
+        vol.Required("actor"): vol.In([ACTOR_PANEL, ACTOR_USER]),
+        vol.Optional("actor_child_id"): _strict_int,
+        vol.Optional("actor_user_id"): str,
+    }
+)
+
+
+def _require_runtime(hass: HomeAssistant, find_runtime: FindRuntime):
+    runtime = find_runtime(hass)
+    if runtime is None:
+        raise HomeAssistantError(
+            "NestQuest is not loaded; cannot run this service"
+        )
+    return runtime
+
+
+async def _refresh_entities(runtime: Any) -> None:
+    """Force an immediate coordinator refresh after the service call.
+
+    Only the SERVICE path calls this — the scheduled materialize and
+    rollover internals are direct function calls and never widen this
+    gate — so the entities reflect a completion the moment the service
+    call returns instead of waiting for the poll interval.
+    """
+    coordinator = getattr(runtime, "coordinator", None)
+    if coordinator is not None:
+        await coordinator.async_refresh()
+
+
+def _actor_kwargs(call: Any) -> dict[str, Any]:
+    actor = call.data["actor"]
+    if actor == ACTOR_PANEL:
+        actor_child_id = call.data.get("actor_child_id")
+        if actor_child_id is None:
+            raise HomeAssistantError(
+                "actor_child_id is required when actor is panel"
+            )
+        return {
+            "actor_source": ACTOR_PANEL,
+            "actor_child_id": actor_child_id,
+            "actor_user_id": None,
+        }
+    context = getattr(call, "context", None)
+    user_id = getattr(context, "user_id", None) if context is not None else None
+    if not user_id:
+        user_id = call.data.get("actor_user_id")
+    return {
+        "actor_source": ACTOR_USER,
+        "actor_user_id": user_id,
+        "actor_child_id": None,
+    }
+
+
+def _with_errors(handler: ServiceHandler) -> ServiceHandler:
+    async def _wrapped(call: Any) -> None:
+        try:
+            await handler(call)
+        except HomeAssistantError:
+            raise
+        except ValueError as err:
+            raise HomeAssistantError(str(err)) from err
+
+    return _wrapped
+
+
+def _complete_quest(
+    hass: HomeAssistant, find_runtime: FindRuntime
+) -> ServiceHandler:
+    async def _handler(call: Any) -> None:
+        runtime = _require_runtime(hass, find_runtime)
+        instance_id = call.data["instance_id"]
+        # The panel contract (decision 9): a tap completes as the
+        # tapped child profile, the only actor shape the API's panel
+        # route accepts.  The payload schema is unchanged — the panel
+        # cards call it with instance_id, actor=panel, actor_child_id.
+        actor = _actor_kwargs(call)
+        if actor["actor_source"] != ACTOR_PANEL:
+            raise HomeAssistantError(
+                "nestquest.complete_quest completes through the API's "
+                "panel route as the tapped child profile; actor must "
+                "be 'panel' with actor_child_id"
+            )
+        # The entry's ONE shared API client (built at setup): the
+        # coordinator's snapshot poll, the SSE subscription, and this
+        # proxy all ride the same instance.  An entry with no panel
+        # token runs the unconfigured stub, which has no completion
+        # surface — fail fast with a clear, token-free message.
+        complete_instance = getattr(
+            getattr(runtime.coordinator, "api_client", None),
+            "complete_instance",
+            None,
+        )
+        if complete_instance is None:
+            raise HomeAssistantError(
+                "NestQuest API is not configured; cannot complete a "
+                "quest"
+            )
+        try:
+            await complete_instance(instance_id, actor["actor_child_id"])
+        except NestQuestApiError as err:
+            # The typed API failure surfaces as a service error the
+            # caller sees — never swallowed, never retried here.  The
+            # typed message names method, path, and status only; the
+            # panel token never appears in it.
+            raise HomeAssistantError(
+                f"NestQuest quest completion failed: {err}"
+            ) from err
+        # NO local completion write and NO local event: the API service
+        # emits the transition on its SSE stream and the integration's
+        # subscription re-fires it on the bus — firing it here too
+        # would double-fire.  The immediate refresh keeps the old
+        # behaviour where the sensors reflect the completion the
+        # moment the service call returns instead of waiting for the
+        # poll interval.
+        await _refresh_entities(runtime)
+
+    return _with_errors(_handler)
+
+
+def async_register_services(
+    hass: HomeAssistant,
+    *,
+    find_runtime: FindRuntime,
+) -> None:
+    """Register the panel completion service once at domain scope.
+
+    The one remaining HA service is the panel completion path; every
+    admin operation moved to the API service's admin routes, so there
+    is no permission gate to apply here.
+    """
+    if hass.services.has_service(DOMAIN, SERVICE_COMPLETE_QUEST):
+        return
+    hass.services.async_register(
+        DOMAIN,
+        SERVICE_COMPLETE_QUEST,
+        _complete_quest(hass, find_runtime),
+        schema=SCHEMA_COMPLETE_QUEST,
+    )
+
+
+def async_deregister_services(hass: HomeAssistant) -> None:
+    """Remove every canonical service when the last entry unloads."""
+    for service in DOMAIN_SERVICES:
+        if hass.services.has_service(DOMAIN, service):
+            hass.services.async_remove(DOMAIN, service)