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>

.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

@@ -159,9 +159,50 @@ Sensors the automations read: `sensor.nestquest_<child>_quests_due_today`
 
 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.
+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. **Create a dedicated kiosk user.** In *Settings → People → Users*, add
+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`,
@@ -174,66 +215,101 @@ is simply a Home Assistant client.
    Assistant user it may also reach other permitted Home Assistant entities
    and services.
 
-2. **Build a dashboard with only the NestQuest panel cards.** Create a
-   Lovelace dashboard whose **URL slug is `nestquest`** (Settings →
-   Dashboards → Edit → URL slug). 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):
+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.
 
-   - **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),
-     `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.
-
-    Each view's layout MUST be set to **Panel** (Edit Dashboard → pencil on the
-    view → View type: Panel). Home Assistant's default Masonry layout constrains
-    the 1080px-tall NestQuest card to a narrow column; Panel (single-card)
-    layout is what renders the card full-screen at 1920×1080.
-
-    The dashboard contains only the NestQuest panel card for each view —
-    no other cards, no admin controls.
-
-   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.
-
-3. **Point TouchHub at it.** In the TouchHub launcher, add the **Home
-   Assistant Lovelace** app to the dock and paste the dashboard URL from
-   step 2 — the party-board view URL, e.g. `/nestquest/board` (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.
-
-4. **Log the kiosk session in.** Sign in on the device as the dedicated
-   kiosk user from step 1, and leave that session logged in.
+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.

RELEASE_NOTES.md

@@ -1,27 +1,135 @@
 # NestQuest Release Notes
 
-## Unreleased
+## Version 0.6.0 — 2026-09-23
 
-- **Storage layer extraction (task d0b691d8):** the SQLite storage layer
-  (schema, migrations, db, store, const, recurrence, DAOs) is bundled
-  under `custom_components/nestquest/core/`, with the integration's
-  original module names preserved as re-export shims.
-- **Logger namespace change (breaking for logging configuration):** the
-  migrations runner now logs under
-  `custom_components.nestquest.core.migrations` instead of
-  `custom_components.nestquest.migrations`. Users who tuned the old
-  logger name (e.g. in `logger.yaml` or `configuration.yaml`) must
-  update the entry to keep that level, as the old name no longer
-  receives migration log output.
-- **Additional logger namespace moves:** the children registry and the
-  admin allowlist business layers now log under
-  `custom_components.nestquest.core.children` and
-  `custom_components.nestquest.core.admin_allowlist` respectively
-  (moved with the engines/business-layer extraction, task 510c1f78).
-  The parent `custom_components.nestquest` logger still catches both,
-  so users who tune the parent rather than the leaf names are
-  unaffected; only users who pinned a leaf logger name by its old
-  spelling need to update.
+### 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
 

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

@@ -1,375 +1,78 @@
-"""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 datetime
 import inspect
-import sqlite3
 from collections.abc import Callable
 from dataclasses import dataclass
-from pathlib import Path
 from typing import Any
-from zoneinfo import ZoneInfo
 
 from homeassistant.config_entries import ConfigEntry
 from homeassistant.core import HomeAssistant
 from homeassistant.exceptions import ConfigEntryNotReady
-from homeassistant.helpers.event import async_track_time_change
 
 from .const import (
-    CONF_ADMIN_USER_IDS,
+    CONF_SNAPSHOT_STALENESS,
     CONF_UPDATE_INTERVAL,
+    DEFAULT_SNAPSHOT_STALENESS,
     DEFAULT_UPDATE_INTERVAL,
     DOMAIN,
     LOGGER,
     PLATFORMS,
 )
-from .core.settings import NestQuestSettings
+from .coordinator import NestQuestCoordinator, coordinator_client_from_entry
+from .dashboard import async_register_dashboard
 from .frontend import async_register_frontend
-from .coordinator import NestQuestCoordinator
-from .db import NestQuestDatabase, make_database
-from .materialize import materialize as _materialize_run
-from .migrations import apply_migrations
 from .services import async_deregister_services, async_register_services
-from .store import async_get_db_path
-from .admin_allowlist import seed_setup_admin
-from .sweep import run_missed_sweep
+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 make_database(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
-    settings: NestQuestSettings
-    database: NestQuestDatabase
     remove_update_listener: Callable[[], Any]
-    remove_time_change_listener: Callable[[], Any]
     coordinator: Any = None
-
-
-async def _async_owner_user_ids(hass: HomeAssistant) -> list[str]:
-    """Return every Home Assistant owner-account user id.
-
-    The last-resort admin seed: when no persisted allowlist copy and no
-    flow-context user survive to first setup, the HA owner accounts are
-    seeded so the household is never left with zero admins (an empty
-    allowlist fails closed, which would lock the household out of its
-    own integration).  Owner accounts can already do everything in HA,
-    so granting NestQuest admin is not a privilege escalation.
-    """
-    auth = getattr(hass, "auth", None)
-    if auth is None:
-        return []
-    users = await auth.async_get_users()
-    owners = [
-        user.id
-        for user in users
-        if getattr(user, "is_owner", False) and getattr(user, "id", None)
-    ]
-    return owners
-
-
-async def _run_horizon_materialization(
-    hass: HomeAssistant,
-    database: NestQuestDatabase,
-    settings: NestQuestSettings,
-) -> None:
-    """Materialize the rolling horizon ``[today, today + horizon_days]``.
-
-    "today" is computed in HA local time (``hass.config.time_zone``) rather
-    than the system clock, so the horizon tracks the household's own day.
-    The walk itself runs through :func:`~.materialize.materialize`, whose DB
-    access is executor-only.
-
-    This is the ONE generation path: the startup backfill, the daily rollover
-    listener and the ``regenerate`` service all funnel through it, so there is
-    no duplicated materialization logic.  ``settings`` (REQUIRED — there is no
-    silent default; every caller already passes the entry's validated
-    :class:`NestQuestSettings`) carries the configured ``horizon_days``.  The
-    window itself comes from :meth:`settings.horizon_window` so the helper is
-    real and shared (not recomputed inline here).
-    """
-    time_zone = ZoneInfo(hass.config.time_zone)
-    today = datetime.datetime.now(time_zone).date()
-    start, end = settings.horizon_window(today)
-    await _materialize_run(database, start.isoformat(), end.isoformat(), today=today)
-
-
-def _register_day_rollover_listener(
-    hass: HomeAssistant,
-    database: NestQuestDatabase,
-    settings: NestQuestSettings,
-) -> Callable[[], Any]:
-    """Register the daily rollover listener and return its remover.
-
-    Fires once per day at the configured local ``day_rollover_time``:
-    first re-materializes the rolling horizon
-    ``[today, today + horizon_days]`` through the shared
-    :func:`_run_horizon_materialization` path (the entry's configured,
-    validated ``horizon_days`` carried on ``settings``), then runs the
-    Feature 11 missed sweep — announcing yesterday's still-open quests
-    as missed AFTER today's instances exist, watermark-guarded so a
-    re-fire of the listener the same night announces nothing twice.
-    """
-    hour, minute = settings.day_rollover_hour_minute
-
-    async def _run_materialization(_now: datetime.datetime) -> None:
-        await _run_horizon_materialization(hass, database, settings)
-        await run_missed_sweep(hass, database)
-
-    return async_track_time_change(
-        hass, _run_materialization, hour=hour, minute=minute
-    )
+    event_stream: NestQuestEventStream | None = None
 
 
 def _find_live_runtime_data(hass: HomeAssistant) -> NestQuestRuntimeData | None:
-    """Return a live runtime record with a connected database, or None.
+    """Return a live runtime record with a coordinator, or None.
 
-    The domain-global services (e.g. ``regenerate``) have no database of
-    their own; they resolve whichever config entry's runtime data is
-    currently live at call time, so none of them can hold a stale handle
-    to a closed connection after another entry unloads.  The record also
-    carries that entry's validated ``settings`` (e.g. the configured
-    horizon) so service handlers read horizon days off it rather than
-    re-reading HA config.
+    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():
-        database = getattr(runtime_data, "database", None)
-        if database is not None and database.connected:
+        if getattr(runtime_data, "coordinator", None) is not None:
             return runtime_data
     return None
 
 
-def _make_regenerate_handler(hass: HomeAssistant):
-    """Return the Feature 07 ``regenerate`` handler closed over ``hass``."""
-
-    async def _regenerate(_call: Any) -> None:
-        runtime_data = _find_live_runtime_data(hass)
-        if runtime_data is None:
-            _LOGGER.warning(
-                "NestQuest regenerate requested but no config entry has a "
-                "live database; ignoring"
-            )
-            return
-        await _run_horizon_materialization(
-            hass, runtime_data.database, runtime_data.settings
-        )
-
-    return _regenerate
-
-
 def _register_services(hass: HomeAssistant) -> None:
-    """Register domain-global NestQuest services once.
+    """Register the domain-global NestQuest service once.
 
-    Services are DOMAIN-global — registered exactly once (guarded by
-    ``has_service`` on regenerate) and NOT bound to any config entry —
-    so each handler resolves the currently-live database at call time
+    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,
-        regenerate_handler=_make_regenerate_handler(hass),
-    )
+    async_register_services(hass, find_runtime=_find_live_runtime_data)
 
 
 def _deregister_services(hass: HomeAssistant) -> None:
@@ -386,48 +89,14 @@ async def async_setup(hass: HomeAssistant, config: dict[str, Any]) -> bool:
 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 — and the
-            # same allowlist seeding, so a reopened fresh file is
-            # never ownerless.
-            db = await _async_open_database(
-                hass, await async_get_db_path(hass)
-            )
-            try:
-                stored_admin_ids = (
-                    entry.options.get(CONF_ADMIN_USER_IDS)
-                    or entry.data.get(CONF_ADMIN_USER_IDS)
-                )
-                context = getattr(entry, "context", None)
-                context_user_id = (
-                    context.get("user_id")
-                    if isinstance(context, dict)
-                    else None
-                )
-                await seed_setup_admin(
-                    db,
-                    stored_admin_ids=stored_admin_ids,
-                    context_user_id=context_user_id,
-                    owner_ids=await _async_owner_user_ids(hass),
-                )
-            except BaseException:
-                # A seeding failure must not leak the just-opened
-                # connection: close it before the error propagates, so
-                # HA's setup retry starts from a clean handle (the
-                # first-setup path closes symmetrically).
-                await db.close()
-                raise
-            existing.database = db
-        entry.runtime_data = existing
-        return True
 
     async def _async_update_listener(
         listener_hass: HomeAssistant, listener_entry: ConfigEntry
@@ -435,108 +104,94 @@ 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
-    remove_time_change_listener: Callable[[], Any] | None = None
     coordinator: Any = None
+    event_stream: NestQuestEventStream | None = None
     try:
-        # Seed the admin allowlist on first setup so the owner is never
-        # locked out: an empty database takes the persisted admin copy
-        # — the options flow's saved list first (it is the current
-        # one), else the config flow's user from entry data — and only
-        # then the HA user still present on the entry context.  No-op
-        # on a non-empty list (fail-closed narrowing is deliberate).
-        stored_admin_ids = (
-            entry.options.get(CONF_ADMIN_USER_IDS)
-            or entry.data.get(CONF_ADMIN_USER_IDS)
-        )
-        context = getattr(entry, "context", None)
-        context_user_id = (
-            context.get("user_id")
-            if isinstance(context, dict)
-            else None
-        )
-        owner_ids = await _async_owner_user_ids(hass)
-        await seed_setup_admin(
-            database,
-            stored_admin_ids=stored_admin_ids,
-            context_user_id=context_user_id,
-            owner_ids=owner_ids,
-        )
-        # Build the explicit settings object from entry.options ONCE: the
-        # horizon materialization and the daily-rollover listener both
-        # consume it, so core never reads HA config itself.  A malformed
-        # stored option falls back PER FIELD (via from_options_resilient)
-        # so a single bad sibling option cannot reset the user's
-        # horizon_days or day_rollover_time — the two fields core
-        # consumes — to their defaults.
-        settings = NestQuestSettings.from_options_resilient(entry.options)
         remove_update_listener = entry.add_update_listener(_async_update_listener)
-        remove_time_change_listener = _register_day_rollover_listener(
-            hass, database, settings
-        )
-        # Backfill any days the daily listener missed while the integration
-        # was off (or freshly installed): run the one idempotent walk over
-        # [today, today + horizon_days] once at setup, using the entry's
-        # configured horizon.  This runs through the SAME path as the daily
-        # listener and regenerate service.
-        await _run_horizon_materialization(hass, database, settings)
-        # The missed sweep runs at startup too (Feature 11): if HA was
-        # down at the rollover time, the previous night's still-open
-        # quests are announced as missed now instead of waiting for
-        # the next midnight.  Watermark-guarded, so this is a no-op
-        # when the night's sweep already ran.
-        await run_missed_sweep(hass, database)
         _register_services(hass)
-        # The shared Feature 10 coordinator: one refresh cycle every
-        # entity reads from (CONF_UPDATE_INTERVAL seconds, default
-        # five minutes).  Created AFTER services so a failure below
-        # unwinds them through the except path's listener handling.
+        # 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,
-            database=database,
+            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
+            ),
         )
-        await coordinator.async_config_entry_first_refresh()
+        # 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,
-            settings=settings,
-            database=database,
             remove_update_listener=remove_update_listener,
-            remove_time_change_listener=remove_time_change_listener,
             coordinator=coordinator,
+            event_stream=event_stream,
         )
-        # runtime_data is assigned BEFORE the platforms forward so each
-        # platform's async_setup_entry reads its coordinator off the
-        # entry (the HA runtime-data contract); a forward failure below
-        # unwinds it through the except path.
+        # 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:
-        # A failure anywhere after the database is open must not leak the
-        # listeners already registered against that (now-closed) database:
-        # unwind EVERY remover we acquired before the failure, keeping the
-        # original error as the one raised.  Removal is best-effort — a
-        # failing remover must not mask the setup error that triggered it.
-        for remove_listener in (
-            remove_time_change_listener,
-            remove_update_listener,
-        ):
-            if remove_listener is None:
-                continue
+        # 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:
-                result = remove_listener()
-                if inspect.isawaitable(result):
-                    await result
+                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 database being closed below —
-        # shut it down FIRST so no scheduled refresh can ever run
-        # against a closed connection.
+        # 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()
@@ -544,13 +199,20 @@ async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
                 pass
         # A platform-forward failure reached this unwind AFTER
         # runtime_data was assigned: clear it so no later unload path
-        # closes the already-closed database through the stale record.
+        # 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
-        await database.close()
+        # 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
-    assert remove_update_listener is not None
-    assert remove_time_change_listener is not None
+    # 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
 
@@ -565,58 +227,50 @@ async def async_unload_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
     if runtime_data is None:
         runtime_data = getattr(entry, "runtime_data", None)
     # Platforms unload FIRST (mirroring HA conventions): entity
-    # listeners must not outlive the database and coordinator the
-    # teardown below closes.
+    # 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 database.  Restore
+        # 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 closed database.
+        # 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)
-        remove_time_change_listener = getattr(
-            runtime_data, "remove_time_change_listener", 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:
-            for remove_listener in (
-                remove_update_listener,
-                remove_time_change_listener,
-            ):
-                if remove_listener is None:
-                    continue
-                try:
-                    result = remove_listener()
-                    if inspect.isawaitable(result):
-                        await result
-                except BaseException as err:
-                    # Cancel EVERY listener even when an earlier remover
-                    # raises: a skipped remover would leave a daily
-                    # callback firing against a closed database after
-                    # unload.  The first error is retained and re-raised
-                    # only after both removers (and the DB close) ran.
-                    if unload_error is None:
-                        unload_error = err
+            if remove_update_listener is not None:
+                result = remove_update_listener()
+                if inspect.isawaitable(result):
+                    await result
+        except BaseException as 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:
-            # The coordinator's entity listeners must stop BEFORE the
-            # database closes: a scheduled refresh starting during the
-            # close await would touch a cleared connection.  (The
-            # platform unload above already removed the entities; this
-            # clears the coordinator's own remaining listeners.)
+            # 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()
-            database = getattr(runtime_data, "database", None)
-            if database is not None:
-                await database.close()
     # 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.

custom_components/nestquest/admin_allowlist.py

@@ -1,11 +0,0 @@
-"""Re-export of :mod:`custom_components.nestquest.core.admin_allowlist` for the integration package.
-
-The admin allowlist business layer lives in
-:mod:`custom_components.nestquest.core.admin_allowlist` (extracted in
-task 510c1f78); this module re-exports it so existing
-``from .admin_allowlist import ...`` references inside the integration
-keep working.
-"""
-from __future__ import annotations
-
-from .core.admin_allowlist import *  # noqa: F401,F403

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/children.py

@@ -1,11 +0,0 @@
-"""Re-export of :mod:`custom_components.nestquest.core.children` for the integration package.
-
-The children registry business layer lives in
-:mod:`custom_components.nestquest.core.children` (extracted in
-task 510c1f78); this module re-exports it so existing
-``from .children import ...`` references inside the integration keep
-working.
-"""
-from __future__ import annotations
-
-from .core.children import *  # noqa: F401,F403

custom_components/nestquest/completion.py

@@ -1,11 +0,0 @@
-"""Re-export of :mod:`custom_components.nestquest.core.completion` for the integration package.
-
-The completion business layer lives in
-:mod:`custom_components.nestquest.core.completion` (extracted in
-task 510c1f78); this module re-exports it so existing
-``from .completion import ...`` references inside the integration keep
-working.
-"""
-from __future__ import annotations
-
-from .core.completion import *  # noqa: F401,F403

custom_components/nestquest/config_flow.py

@@ -7,7 +7,7 @@ from homeassistant import config_entries
 from homeassistant.core import callback
 from homeassistant.data_entry_flow import FlowResult
 
-from .const import CONF_ADMIN_USER_IDS, DOMAIN
+from .const import DOMAIN
 
 
 class NestQuestConfigFlow(config_entries.ConfigFlow, domain=DOMAIN):
@@ -30,11 +30,11 @@ class NestQuestConfigFlow(config_entries.ConfigFlow, domain=DOMAIN):
     ) -> FlowResult:
         """Handle the user step of the config flow.
 
-        The HA user completing the flow is persisted into the entry
-        data as the initial admin allowlist copy: real HA does not
-        guarantee the flow context survives to setup, and entry data is
-        the persisted record first setup seeds from — the owner is
-        never locked out.
+        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():
@@ -43,12 +43,4 @@ class NestQuestConfigFlow(config_entries.ConfigFlow, domain=DOMAIN):
         if user_input is None:
             return self.async_show_form(step_id="user")
 
-        data = dict(user_input)
-        flow_user_id = (
-            self.context.get("user_id")
-            if isinstance(self.context, dict)
-            else None
-        )
-        if flow_user_id:
-            data[CONF_ADMIN_USER_IDS] = [flow_user_id]
-        return self.async_create_entry(title="NestQuest", data=data)
+        return self.async_create_entry(title="NestQuest", data=dict(user_input))

custom_components/nestquest/coordinator.py

@@ -1,4 +1,4 @@
-"""The shared NestQuest DataUpdateCoordinator (Feature 10).
+"""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
@@ -7,105 +7,216 @@ 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.
 
-"Today" and "now" are HA-local (``hass.config.time_zone``), never the
-host clock and never UTC, matching the materialization and completion
-layers.
+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.
 
-Presence is resolved through the SAME engine the materializer uses
-(:class:`~.presence.PresenceEngine`): schedules and overrides are read
-with the public DAO methods and the engine's anchor-date arithmetic
-answers ``is this child at this house today`` (D-004 — never ISO week
-parity).
+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).
 
-``cycle_day`` reports where today falls in the custody cycle of the
-first active child (display order) that HAS a schedule — 1-based day
-``N`` of ``cycle_length_weeks * 7``, computed from that schedule's
-anchor date.  ``0`` means no active child has a schedule at all, so
-the admin header degrades to a harmless zero instead of guessing.
+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
-from dataclasses import dataclass
-from zoneinfo import ZoneInfo
+import time
+from typing import Any
 
 from homeassistant.core import HomeAssistant
-from homeassistant.helpers.update_coordinator import DataUpdateCoordinator
+from homeassistant.helpers.update_coordinator import (
+    DataUpdateCoordinator,
+    UpdateFailed,
+)
 
-from .completion import derive_state
+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 .dao_children import ChildrenDao
-from .dao_instances import (
-    CompletionEventsDao,
-    QuestInstancesDao,
-)
-from .dao_rules import QuestDefinitionsDao
-from .dao_presence import PresenceOverridesDao, PresenceSchedulesDao
-from .db import NestQuestDatabase
-from .presence import (
-    MAX_PREVIEW_SCAN_DAYS,
-    PresenceEngine,
-    PresenceOverride,
-    PresenceSchedule,
+from .core.snapshot import (
+    ChildDaySnapshot,
+    NestQuestSnapshot,
+    QuestInstanceView,
 )
 
-
-@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
+__all__ = [
+    "ChildDaySnapshot",
+    "NestQuestCoordinator",
+    "NestQuestSnapshot",
+    "QuestInstanceView",
+]
 
 
-@dataclass(frozen=True)
-class ChildDaySnapshot:
-    """One active child's day: instances, presence, and rollup counts."""
+def snapshot_from_api_payload(payload: dict[str, Any]) -> NestQuestSnapshot:
+    """Reconstruct the core snapshot dataclasses from the API's JSON.
 
-    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
+    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"],
+    )
 
 
-@dataclass(frozen=True)
-class NestQuestSnapshot:
-    """The coordinator's whole-entity data payload."""
+class _UnconfiguredApiClient:
+    """Client-shaped stand-in used when the entry has no panel token.
 
-    today_iso: str
-    children: tuple[ChildDaySnapshot, ...]
-    cycle_day: int
+    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
@@ -113,6 +224,15 @@ class NestQuestCoordinator(DataUpdateCoordinator):
     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__(
@@ -120,8 +240,9 @@ class NestQuestCoordinator(DataUpdateCoordinator):
         hass: HomeAssistant,
         *,
         entry_id: str,
-        database: NestQuestDatabase,
+        api_client: NestQuestApiClient,
         update_interval_seconds: int | None = None,
+        staleness_seconds: int | None = None,
     ) -> None:
         interval = update_interval_seconds
         if (
@@ -130,6 +251,19 @@ class NestQuestCoordinator(DataUpdateCoordinator):
             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,
@@ -137,8 +271,16 @@ class NestQuestCoordinator(DataUpdateCoordinator):
             update_interval=datetime.timedelta(seconds=interval),
         )
         self.entry_id = entry_id
-        self.database = database
+        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
@@ -147,146 +289,98 @@ class NestQuestCoordinator(DataUpdateCoordinator):
         async with self._refresh_lock:
             await super().async_refresh()
 
-    def _local_now(self) -> datetime.datetime:
-        time_zone = ZoneInfo(self.hass.config.time_zone)
-        return datetime.datetime.now(time_zone)
-
     async def _async_update_data(self) -> NestQuestSnapshot:
-        now = self._local_now()
-        today = now.date()
-        today_iso = today.isoformat()
+        """One refresh pass: fetch the panel snapshot and rebuild it.
 
-        children = await ChildrenDao(self.database).list_active()
+        A successful pass rebuilds the snapshot and refreshes the
+        last-good cache (the snapshot plus the
+        :func:`time.monotonic` instant of the success).
 
-        schedules: dict[int, PresenceSchedule] = {}
-        overrides: dict[int, list[PresenceOverride]] = {}
-        for child in children:
-            schedule = await PresenceSchedulesDao(self.database).get_by_child(
-                child.id
-            )
-            if schedule is not None:
-                schedules[child.id] = PresenceSchedule.decode(
-                    child.id, schedule.anchor_date, schedule.pattern
+        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,
                 )
-            window_end = today + datetime.timedelta(
-                days=MAX_PREVIEW_SCAN_DAYS
+                return cached
+            LOGGER.error(
+                "NestQuest coordinator refresh failed: %s", err
             )
-            window_end_iso = window_end.isoformat()
-            ranged = await PresenceOverridesDao(
-                self.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(self.database)
-        events_dao = CompletionEventsDao(self.database)
-        definitions_dao = QuestDefinitionsDao(self.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),
-        )
+            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 _cycle_day(
-    schedules: dict[int, PresenceSchedule], children, today: datetime.date
-) -> int:
-    """Return today's 1-based day in the first scheduled child's cycle.
+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.
 
-    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.
+    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``.
     """
-    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
+    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/const.py

@@ -20,44 +20,41 @@ TIME_PATTERN = re.compile(r"(?:[01]\d|2[0-3]):[0-5]\d")
 PLATFORMS: list[str] = ["sensor", "binary_sensor"]
 
 # Home Assistant bus events (design/ENTITIES-AND-SERVICES.md §3).  The
-# panel and admin cards listen for these; Feature 10 fires completed,
-# uncompleted, and child_day_complete from the service paths, and
-# Feature 11's nightly sweep fires quest_missed.
+# 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 names (design/ENTITIES-AND-SERVICES.md §2
-#: plus the existing Feature 07 regenerate service).
+#: 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"
-SERVICE_UNCOMPLETE_QUEST = "uncomplete_quest"
-SERVICE_CREATE_QUEST_DEFINITION = "create_quest_definition"
-SERVICE_UPDATE_QUEST_DEFINITION = "update_quest_definition"
-SERVICE_SET_QUEST_DEFINITION_ACTIVE = "set_quest_definition_active"
-SERVICE_SET_PRESENCE_PATTERN = "set_presence_pattern"
-SERVICE_CREATE_PRESENCE_OVERRIDE = "create_presence_override"
-SERVICE_DELETE_PRESENCE_OVERRIDE = "delete_presence_override"
-SERVICE_EXPORT_HISTORY_CSV = "export_history_csv"
-SERVICE_MANAGE_CHILD = "manage_child"
-SERVICE_REGENERATE = "regenerate"
 
 DOMAIN_SERVICES: tuple[str, ...] = (
     SERVICE_COMPLETE_QUEST,
-    SERVICE_UNCOMPLETE_QUEST,
-    SERVICE_CREATE_QUEST_DEFINITION,
-    SERVICE_UPDATE_QUEST_DEFINITION,
-    SERVICE_SET_QUEST_DEFINITION_ACTIVE,
-    SERVICE_SET_PRESENCE_PATTERN,
-    SERVICE_CREATE_PRESENCE_OVERRIDE,
-    SERVICE_DELETE_PRESENCE_OVERRIDE,
-    SERVICE_EXPORT_HISTORY_CSV,
-    SERVICE_MANAGE_CHILD,
-    SERVICE_REGENERATE,
 )
 
 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
@@ -81,6 +78,21 @@ 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
@@ -101,6 +113,32 @@ 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

custom_components/nestquest/core/dao_meta.py

@@ -41,4 +41,38 @@ class MetaStateDao:
                     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/events.py

@@ -14,7 +14,9 @@ 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; nothing here builds it.
+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
@@ -50,6 +52,7 @@ 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
@@ -188,3 +191,20 @@ async def build_quest_uncompleted_events(
     """
     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/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/service_policy.py

@@ -1,46 +0,0 @@
-"""Explicit admin-only versus open service registry (Feature 09).
-
-One mapping, one file: every registered ``nestquest`` service name is
-either ``open`` or ``admin_only``.  The permission decorator (later
-Feature 09 tasks) reads this table; it does not take per-handler
-policy arguments.
-"""
-from __future__ import annotations
-
-from .const import (
-    DOMAIN_SERVICES,
-    SERVICE_COMPLETE_QUEST,
-    SERVICE_CREATE_PRESENCE_OVERRIDE,
-    SERVICE_CREATE_QUEST_DEFINITION,
-    SERVICE_DELETE_PRESENCE_OVERRIDE,
-    SERVICE_EXPORT_HISTORY_CSV,
-    SERVICE_MANAGE_CHILD,
-    SERVICE_REGENERATE,
-    SERVICE_SET_PRESENCE_PATTERN,
-    SERVICE_SET_QUEST_DEFINITION_ACTIVE,
-    SERVICE_UNCOMPLETE_QUEST,
-    SERVICE_UPDATE_QUEST_DEFINITION,
-)
-
-OPEN = "open"
-ADMIN_ONLY = "admin_only"
-
-SERVICE_POLICY: dict[str, str] = {
-    SERVICE_COMPLETE_QUEST: OPEN,
-    SERVICE_UNCOMPLETE_QUEST: ADMIN_ONLY,
-    SERVICE_CREATE_QUEST_DEFINITION: ADMIN_ONLY,
-    SERVICE_UPDATE_QUEST_DEFINITION: ADMIN_ONLY,
-    SERVICE_SET_QUEST_DEFINITION_ACTIVE: ADMIN_ONLY,
-    SERVICE_SET_PRESENCE_PATTERN: ADMIN_ONLY,
-    SERVICE_CREATE_PRESENCE_OVERRIDE: ADMIN_ONLY,
-    SERVICE_DELETE_PRESENCE_OVERRIDE: ADMIN_ONLY,
-    SERVICE_EXPORT_HISTORY_CSV: ADMIN_ONLY,
-    SERVICE_MANAGE_CHILD: ADMIN_ONLY,
-    SERVICE_REGENERATE: ADMIN_ONLY,
-}
-
-if frozenset(SERVICE_POLICY) != frozenset(DOMAIN_SERVICES):
-    raise RuntimeError(
-        "SERVICE_POLICY must name exactly the registered nestquest services, "
-        f"got {sorted(SERVICE_POLICY)} vs {list(DOMAIN_SERVICES)}"
-    )

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/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_children.py

@@ -1,12 +0,0 @@
-"""Re-export of :mod:`custom_components.nestquest.core.dao_children` for the integration package.
-
-The children/admin DAO lives in
-:mod:`custom_components.nestquest.core.dao_children` (extracted in
-task d0b691d8); this module re-exports it so existing
-``from .dao_children import ...`` references inside the integration keep
-working.
-"""
-from __future__ import annotations
-
-from .core.dao_children import *  # noqa: F401,F403
-from .core.dao_children import _CONNECTION_LOCKS, _connection_lock  # noqa: F401

custom_components/nestquest/dao_instances.py

@@ -1,12 +0,0 @@
-"""Re-export of :mod:`custom_components.nestquest.core.dao_instances` for the integration package.
-
-The instances/completion-events DAO lives in
-:mod:`custom_components.nestquest.core.dao_instances`
-(extracted in task d0b691d8); this module re-exports it so existing
-``from .dao_instances import ...`` references inside the integration keep
-working.
-"""
-from __future__ import annotations
-
-from .core.dao_instances import *  # noqa: F401,F403
-from .core.dao_instances import _resolve_today  # noqa: F401

custom_components/nestquest/dao_meta.py

@@ -1,11 +0,0 @@
-"""Re-export of :mod:`custom_components.nestquest.core.dao_meta` for the integration package.
-
-The meta-state DAO lives in
-:mod:`custom_components.nestquest.core.dao_meta` (extracted in task
-d0b691d8); this module re-exports it so existing
-``from .dao_meta import ...`` references inside the integration keep
-working.
-"""
-from __future__ import annotations
-
-from .core.dao_meta import *  # noqa: F401,F403

custom_components/nestquest/dao_presence.py

@@ -1,11 +0,0 @@
-"""Re-export of :mod:`custom_components.nestquest.core.dao_presence` for the integration package.
-
-The presence DAOs live in
-:mod:`custom_components.nestquest.core.dao_presence` (extracted in
-task d0b691d8); this module re-exports them so existing
-``from .dao_presence import ...`` references inside the integration keep
-working.
-"""
-from __future__ import annotations
-
-from .core.dao_presence import *  # noqa: F401,F403

custom_components/nestquest/dao_rules.py

@@ -1,17 +0,0 @@
-"""Re-export of :mod:`custom_components.nestquest.core.dao_rules` for the integration package.
-
-The schedule-rules/quest-definitions DAO lives in
-:mod:`custom_components.nestquest.core.dao_rules` (extracted in task
-d0b691d8); this module re-exports it so existing
-``from .dao_rules import ...`` references inside the integration keep
-working.
-"""
-from __future__ import annotations
-
-from .core.dao_rules import *  # noqa: F401,F403
-from .core.dao_rules import (  # noqa: F401
-    _UNSET,
-    _validate_date,
-    _validate_time,
-    _validate_window,
-)

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/db.py

@@ -1,31 +0,0 @@
-"""Re-export of :mod:`custom_components.nestquest.core.db` for the integration package.
-
-The async SQLite wrapper lives in :mod:`custom_components.nestquest.core.db` (extracted in task
-d0b691d8) and is Home-Assistant-free: :class:`NestQuestDatabase` takes
-an executor callable rather than a ``hass`` object.  This module
-re-exports it and provides :func:`make_database`, a thin adapter that
-constructs a wrapper backed by ``hass.async_add_executor_job``, so the
-integration constructs the database the same way it always did.
-"""
-from __future__ import annotations
-
-from typing import Any, TypeVar
-
-from homeassistant.core import HomeAssistant
-
-from .core.db import ExecutionResult, NestQuestDatabase
-
-__all__ = ["ExecutionResult", "NestQuestDatabase", "make_database"]
-
-T = TypeVar("T")
-
-
-def make_database(hass: HomeAssistant) -> NestQuestDatabase:
-    """Construct a :class:`NestQuestDatabase` wired to ``hass``'s executor.
-
-    Mirrors the pre-extraction ``NestQuestDatabase(hass)`` call: the
-    wrapper's executor is ``hass.async_add_executor_job``, so every
-    sqlite3 call runs on the HA executor thread and the event loop
-    never blocks.
-    """
-    return NestQuestDatabase(hass.async_add_executor_job)

custom_components/nestquest/events.py

@@ -1,79 +0,0 @@
-"""Re-export / HA wiring of :mod:`custom_components.nestquest.core.events` for the integration package.
-
-The transition-event payload construction lives in
-:mod:`custom_components.nestquest.core.events` (extracted in
-task 510c1f78) and is HA-free: it builds and RETURNS the events.  This
-shim keeps the integration's old ``fire_quest_completed`` /
-``fire_quest_uncompleted`` API (the complete/uncomplete service
-handlers call them with ``hass``), reads the HA-local timezone from
-``hass.config.time_zone`` to derive ``today``, asks the core builder
-for the events, and fires each on ``hass.bus`` with the documented
-payloads.  The four blueprints keep working with identical payloads.
-
-The completed event is fired BEFORE the day-complete rule evaluates:
-``fire_quest_completed`` asks
-:func:`build_quest_completed_event` for the completed event and fires
-it immediately, THEN reads the HA-local ``today``, asks
-:func:`build_child_day_complete_event` for the day-complete event, and
-fires it (if any) afterwards.  This restores the pre-extraction
-ordering — a failure in the day-complete DB reads or the ZoneInfo
-lookup cannot suppress the completed event.
-"""
-from __future__ import annotations
-
-import datetime
-from zoneinfo import ZoneInfo
-
-from .core.db import NestQuestDatabase
-from .core.events import (
-    build_child_day_complete_event,
-    build_quest_completed_event,
-    build_quest_uncompleted_events,
-)
-
-__all__ = ["fire_quest_completed", "fire_quest_uncompleted"]
-
-
-async def fire_quest_completed(
-    hass,
-    database: NestQuestDatabase,
-    instance_id: int,
-    *,
-    was_on_time: bool | None,
-) -> None:
-    """Fire ``nestquest_quest_completed`` and, when the completion
-    cleared the child's whole day, ``nestquest_child_day_complete``.
-
-    Thin HA wiring over the HA-free
-    :func:`custom_components.nestquest.core.events.build_quest_completed_event`
-    and
-    :func:`build_child_day_complete_event`: the completed event is
-    built and fired FIRST (so a failure in the day-complete DB reads
-    or the HA-local ``today`` lookup cannot suppress it), then the
-    HA-local ``today`` (the day-complete rule's input) is read from
-    ``hass.config.time_zone`` and the day-complete builder is asked
-    whether the child's whole day cleared.  Identical payloads and
-    day-complete rule to the pre-extraction implementation.
-    """
-    completed = await build_quest_completed_event(
-        database,
-        instance_id,
-        was_on_time=was_on_time,
-    )
-    hass.bus.async_fire(*completed)
-
-    today = datetime.datetime.now(ZoneInfo(hass.config.time_zone)).date()
-    day_complete = await build_child_day_complete_event(
-        database, completed[1], today=today
-    )
-    if day_complete is not None:
-        hass.bus.async_fire(*day_complete)
-
-
-async def fire_quest_uncompleted(
-    hass, database: NestQuestDatabase, instance_id: int
-) -> None:
-    """Fire ``nestquest_quest_uncompleted`` for an actual reversal."""
-    events = await build_quest_uncompleted_events(database, instance_id)
-    for event_type, payload in events:
-        hass.bus.async_fire(event_type, payload)

custom_components/nestquest/manifest.json

@@ -7,12 +7,13 @@
   "config_flow": true,
   "dependencies": [
     "frontend",
-    "http"
+    "http",
+    "lovelace"
   ],
   "documentation": "https://github.com/Maniacs-Mansion/NestQuest",
   "integration_type": "hub",
   "iot_class": "local_polling",
   "issue_tracker": "https://github.com/Maniacs-Mansion/NestQuest/issues",
   "requirements": [],
-  "version": "0.5.0"
+  "version": "0.6.0"
 }

custom_components/nestquest/materialize.py

@@ -1,11 +0,0 @@
-"""Re-export of :mod:`custom_components.nestquest.core.materialize` for the integration package.
-
-The materialization walk lives in
-:mod:`custom_components.nestquest.core.materialize` (extracted in
-task 510c1f78); this module re-exports it so existing
-``from .materialize import ...`` references inside the integration keep
-working.
-"""
-from __future__ import annotations
-
-from .core.materialize import *  # noqa: F401,F403

custom_components/nestquest/migrations.py

@@ -1,11 +0,0 @@
-"""Re-export of :mod:`custom_components.nestquest.core.migrations` for the integration package.
-
-The versioned migration runner lives in
-:mod:`custom_components.nestquest.core.migrations`
-(extracted in task d0b691d8); this module re-exports it so existing
-``from .migrations import ...`` references inside the integration keep
-working.
-"""
-from __future__ import annotations
-
-from .core.migrations import *  # noqa: F401,F403

custom_components/nestquest/options_flow.py

@@ -1,4 +1,15 @@
-"""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
 
 from typing import Any
@@ -6,61 +17,39 @@ from typing import Any
 import voluptuous as vol
 from homeassistant import config_entries
 from homeassistant.data_entry_flow import FlowResult
-from homeassistant.helpers import config_validation as cv
 
 from .const import (
-    CONF_ADMIN_USER_IDS,
-    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,
+    CONF_API_BASE_URL,
     CONF_PANEL_IDLE_TIMEOUT,
+    CONF_PANEL_TOKEN,
+    CONF_SNAPSHOT_STALENESS,
     CONF_UPDATE_INTERVAL,
-    DEFAULT_AFTERNOON_REMINDER_TIME,
-    DEFAULT_AUTOMATION_ENABLED,
-    DEFAULT_DAY_ROLLOVER_TIME,
-    DEFAULT_END_OF_DAY_REPORT_TIME,
-    DEFAULT_HORIZON_DAYS,
-    DEFAULT_MORNING_SUMMARY_TIME,
+    DEFAULT_API_BASE_URL,
     DEFAULT_PANEL_IDLE_TIMEOUT,
+    DEFAULT_PANEL_TOKEN,
+    DEFAULT_SNAPSHOT_STALENESS,
     DEFAULT_UPDATE_INTERVAL,
-    DOMAIN,
     MIN_UPDATE_INTERVAL,
-    TIME_PATTERN,
 )
-from .admin_allowlist import list_admin_ids, set_admin_ids
+from .api_client import is_valid_base_url
 
-MIN_HORIZON_DAYS = 1
 MIN_PANEL_IDLE_TIMEOUT = 30
 
 
-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],
+    current: dict[str, Any] | None = None,
+) -> dict[str, str]:
+    """Validate user input and return field-level errors instead of raising.
 
-
-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)
@@ -81,270 +70,127 @@ def _async_validate(user_input: dict[str, Any]) -> dict[str, str]:
     ):
         errors[CONF_UPDATE_INTERVAL] = "invalid"
 
-    # The notification section (Feature 11) is OPTIONAL in raw submits
-    # the same way: a missing key keeps the current value.  The three
-    # times are strict HH:MM; the notify target is a non-empty HA
-    # service name; the toggles are real booleans.
-    for time_key in (
-        CONF_MORNING_SUMMARY_TIME,
-        CONF_AFTERNOON_REMINDER_TIME,
-        CONF_END_OF_DAY_REPORT_TIME,
+    # 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
     ):
-        time_value = user_input.get(time_key)
-        if time_value is not None and (
-            not isinstance(time_value, str) or not _parse_time(time_value)
+        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
         ):
-            errors[time_key] = "invalid_time"
-    notify_target = user_input.get(CONF_NOTIFY_TARGET)
-    if notify_target is not None and not isinstance(notify_target, str):
-        errors[CONF_NOTIFY_TARGET] = "invalid"
-    elif isinstance(notify_target, str) and notify_target != (
-        notify_target.strip()
+            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()
     ):
-        # An EMPTY target is valid — it means "no notifications
-        # configured yet" and is the shipped default; a value that
-        # differs from its own trim (padded or whitespace-only) is
-        # malformed and rejected.
-        errors[CONF_NOTIFY_TARGET] = "invalid"
-    for toggle_key in (
-        CONF_MORNING_SUMMARY_ENABLED,
-        CONF_AFTERNOON_REMINDER_ENABLED,
-        CONF_END_OF_DAY_REPORT_ENABLED,
-        CONF_CELEBRATION_ENABLED,
-    ):
-        toggle_value = user_input.get(toggle_key)
-        if toggle_value is not None and not isinstance(toggle_value, bool):
-            errors[toggle_key] = "invalid"
+        errors[CONF_PANEL_TOKEN] = "invalid"
 
     return errors
 
 
-def _strict_bool(value: object) -> bool:
-    """Require a real bool; voluptuous ``bool`` would coerce strings."""
-    if not isinstance(value, bool):
-        raise vol.Invalid(f"expected a boolean, got {value!r}")
-    return value
-
-
-def _build_schema(
-    current: dict[str, Any],
-    *,
-    admin_choices: dict[str, str] | None = None,
-    admin_default: list[str] | None = None,
-) -> vol.Schema:
+def _build_schema(current: dict[str, Any]) -> vol.Schema:
     """Build the form schema, pre-filled with the current values.
 
-    The admin picker is a multi-select of EXISTING Home Assistant users
-    (never a free-text field — the allowlist stores user IDs); its
-    default is the current database allowlist, so an untouched submit
-    re-saves exactly who is already allowed.  The notification section
-    (Feature 11) carries the household's notify target, the three
-    automation times, and four enable toggles — defaults from
-    :mod:`~.const`, never a hard-coded personal target.
+    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).
     """
-    fields: dict[Any, Any] = {
-        vol.Required(
-            CONF_HORIZON_DAYS, default=current[CONF_HORIZON_DAYS]
-        ): int,
-        vol.Required(
-            CONF_DAY_ROLLOVER_TIME, default=current[CONF_DAY_ROLLOVER_TIME]
-        ): str,
-        vol.Required(
-            CONF_PANEL_IDLE_TIMEOUT, default=current[CONF_PANEL_IDLE_TIMEOUT]
-        ): int,
-        vol.Required(
-            CONF_UPDATE_INTERVAL, default=current[CONF_UPDATE_INTERVAL]
-        ): int,
-        vol.Required(
-            CONF_NOTIFY_TARGET, default=current[CONF_NOTIFY_TARGET]
-        ): str,
-        vol.Required(
-            CONF_MORNING_SUMMARY_TIME,
-            default=current[CONF_MORNING_SUMMARY_TIME],
-        ): str,
-        vol.Required(
-            CONF_AFTERNOON_REMINDER_TIME,
-            default=current[CONF_AFTERNOON_REMINDER_TIME],
-        ): str,
-        vol.Required(
-            CONF_END_OF_DAY_REPORT_TIME,
-            default=current[CONF_END_OF_DAY_REPORT_TIME],
-        ): str,
-        vol.Required(
-            CONF_MORNING_SUMMARY_ENABLED,
-            default=current[CONF_MORNING_SUMMARY_ENABLED],
-        ): _strict_bool,
-        vol.Required(
-            CONF_AFTERNOON_REMINDER_ENABLED,
-            default=current[CONF_AFTERNOON_REMINDER_ENABLED],
-        ): _strict_bool,
-        vol.Required(
-            CONF_END_OF_DAY_REPORT_ENABLED,
-            default=current[CONF_END_OF_DAY_REPORT_ENABLED],
-        ): _strict_bool,
-        vol.Required(
-            CONF_CELEBRATION_ENABLED,
-            default=current[CONF_CELEBRATION_ENABLED],
-        ): _strict_bool,
-    }
-    if admin_choices is not None:
-        # HA's supported multi-select validator: the frontend can
-        # serialize the field as a real picker of the given choices.
-        fields[
-            vol.Optional(
-                CONF_ADMIN_USER_IDS, default=list(admin_default or [])
-            )
-        ] = cv.multi_select(admin_choices)
-    return vol.Schema(fields)
+    return vol.Schema(
+        {
+            vol.Required(
+                CONF_PANEL_IDLE_TIMEOUT,
+                default=current[CONF_PANEL_IDLE_TIMEOUT],
+            ): int,
+            vol.Required(
+                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_TOKEN, default=current[CONF_PANEL_TOKEN]
+            ): str,
+        }
+    )
 
 
 class NestQuestOptionsFlow(config_entries.OptionsFlowWithConfigEntry):
     """Handle the options flow for NestQuest."""
 
-    def _async_database(self):
-        """Return the runtime database for this entry, or None.
-
-        Real HA only opens the options flow for an existing entry, so
-        the runtime record (and its database) exists; the None branch
-        covers direct construction in tests and degraded states.
-        """
-        hass_data = getattr(self.hass, "data", None)
-        if not isinstance(hass_data, dict):
-            return None
-        record = hass_data.get(DOMAIN, {}).get(self.config_entry.entry_id)
-        database = getattr(record, "database", None)
-        return database if getattr(database, "connected", False) else None
-
-    async def _async_admin_choices(self) -> dict[str, str]:
-        """Map HA user id -> display name for the picker.
-
-        Real Home Assistant always provides ``hass.auth``; a missing
-        one (direct construction in tests, degraded harness) degrades
-        to an empty picker rather than crashing the form.
-        """
-        auth = getattr(self.hass, "auth", None)
-        if auth is None:
-            return {}
-        users = await auth.async_get_users()
-        return {
-            user.id: user.name
-            for user in users
-            if getattr(user, "id", None)
-        }
-
-    async def _async_current_admin_ids(self) -> list[str]:
-        """Return the current allowlist, or [] without a database."""
-        database = self._async_database()
-        if database is None:
-            return []
-        return await list_admin_ids(database)
-
     async def async_step_init(
         self, user_input: dict[str, Any] | None = None
     ) -> FlowResult:
         """Manage the NestQuest options."""
-        admin_choices = await self._async_admin_choices()
-        admin_default = await self._async_current_admin_ids()
         if user_input is None:
             return self.async_show_form(
                 step_id="init",
-                data_schema=_build_schema(
-                    self._current_values(),
-                    admin_choices=admin_choices,
-                    admin_default=admin_default,
-                ),
+                data_schema=_build_schema(self._current_values()),
             )
 
-        errors = _async_validate(user_input)
-        # The admin ids are validated only when the key is present:
-        # schema-validated submits always carry it (vol.Optional's
-        # default fills from the current allowlist), while raw callers
-        # omitting the key keep the field untouched.
-        admin_ids_present = CONF_ADMIN_USER_IDS in user_input
-        admin_ids = user_input.get(CONF_ADMIN_USER_IDS)
+        errors = _async_validate(user_input, self._current_values())
         if errors:
             return self.async_show_form(
                 step_id="init",
-                data_schema=_build_schema(
-                    self._current_values(),
-                    admin_choices=admin_choices,
-                    admin_default=admin_default,
-                ),
-                errors=errors,
-            )
-        if admin_ids_present and (
-            not isinstance(admin_ids, list)
-            or any(not isinstance(value, str) for value in admin_ids)
-        ):
-            errors[CONF_ADMIN_USER_IDS] = "invalid_admin"
-        elif admin_ids_present and not admin_ids:
-            # An empty allowlist fails closed: saving zero admins is
-            # refused, never silently applied.
-            errors[CONF_ADMIN_USER_IDS] = "no_admins"
-        elif admin_ids_present and any(
-            value not in admin_choices for value in admin_ids
-        ):
-            # The schema enforces membership for real HA submits; this
-            # backs the raw-input path up so an unknown id can never
-            # reach the allowlist.
-            errors[CONF_ADMIN_USER_IDS] = "invalid_admin"
-        elif admin_ids_present and len(set(admin_ids)) != len(admin_ids):
-            # set_admin_ids refuses duplicates with ValueError; a flow
-            # submission must surface that as a field error instead of
-            # an unhandled crash.
-            errors[CONF_ADMIN_USER_IDS] = "invalid_admin"
-        if errors:
-            return self.async_show_form(
-                step_id="init",
-                data_schema=_build_schema(
-                    self._current_values(),
-                    admin_choices=admin_choices,
-                    admin_default=admin_default,
-                ),
+                data_schema=_build_schema(self._current_values()),
                 errors=errors,
             )
 
-        # Apply the picker's selection to the allowlist when the
-        # runtime database is reachable; the selection is always
-        # stored on the entry as the disaster-recovery copy.
-        database = self._async_database()
-        if database is not None and admin_ids_present:
-            await set_admin_ids(database, admin_ids)
-        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],
-            CONF_UPDATE_INTERVAL: user_input.get(
-                CONF_UPDATE_INTERVAL,
-                self._current_values()[CONF_UPDATE_INTERVAL],
-            ),
-        }
-        # The notification section (Feature 11) stores the household's
-        # choices the same fall-back-to-current way, so raw submits
-        # that predate the section keep their stored values.
+        # 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()
-        for notification_key in (
-            CONF_NOTIFY_TARGET,
-            CONF_MORNING_SUMMARY_TIME,
-            CONF_AFTERNOON_REMINDER_TIME,
-            CONF_END_OF_DAY_REPORT_TIME,
-            CONF_MORNING_SUMMARY_ENABLED,
-            CONF_AFTERNOON_REMINDER_ENABLED,
-            CONF_END_OF_DAY_REPORT_ENABLED,
-            CONF_CELEBRATION_ENABLED,
+        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[notification_key] = user_input.get(
-                notification_key, current[notification_key]
-            )
-        if admin_ids_present:
-            data[CONF_ADMIN_USER_IDS] = admin_ids
-        elif admin_default:
-            # HA replaces entry.options wholesale, so an omitted picker
-            # field must carry the CURRENT allowlist forward: dropping
-            # it would leave only the stale config-flow copy in entry
-            # data, and a later database loss would resurrect admins
-            # the owner has since removed.
-            data[CONF_ADMIN_USER_IDS] = list(admin_default)
+            data[key] = user_input.get(key, current[key])
         return self.async_create_entry(title="NestQuest", data=data)
 
     def _current_values(self) -> dict[str, Any]:
@@ -353,18 +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_NOTIFY_TARGET, ""),
-            (CONF_MORNING_SUMMARY_TIME, DEFAULT_MORNING_SUMMARY_TIME),
-            (CONF_AFTERNOON_REMINDER_TIME, DEFAULT_AFTERNOON_REMINDER_TIME),
-            (CONF_END_OF_DAY_REPORT_TIME, DEFAULT_END_OF_DAY_REPORT_TIME),
-            (CONF_MORNING_SUMMARY_ENABLED, DEFAULT_AUTOMATION_ENABLED),
-            (CONF_AFTERNOON_REMINDER_ENABLED, DEFAULT_AUTOMATION_ENABLED),
-            (CONF_END_OF_DAY_REPORT_ENABLED, DEFAULT_AUTOMATION_ENABLED),
-            (CONF_CELEBRATION_ENABLED, DEFAULT_AUTOMATION_ENABLED),
+            (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]
@@ -372,4 +211,4 @@ class NestQuestOptionsFlow(config_entries.OptionsFlowWithConfigEntry):
                 values[key] = entry_data[key]
             else:
                 values[key] = default
-        return values
+        return values

custom_components/nestquest/permissions.py

@@ -1,90 +0,0 @@
-"""Permission gate for NestQuest services (Feature 09).
-
-A wrapper factory, applied to EVERY registered service at registration
-time (no handler is exempt), reads ``call.context.user_id``, consults
-the :data:`~.service_policy.SERVICE_POLICY` registry and
-:func:`~.admin_allowlist.is_admin`, and raises
-:class:`homeassistant.exceptions.Unauthorized` for an admin-only
-operation called by a non-admin — including a call with NO user
-context, which fails closed.  ``complete_quest`` (policy ``open``)
-proceeds regardless of the allowlist.
-
-Logging (later Feature 09 tasks): every denied admin-only call logs a
-warning and every successful one logs a debug line, both carrying the
-service, the user id (or ``none``), and a UTC timestamp.
-"""
-from __future__ import annotations
-
-import datetime
-import logging
-from collections.abc import Awaitable, Callable
-from typing import Any
-
-from homeassistant.exceptions import Unauthorized
-
-from .admin_allowlist import is_admin
-from .service_policy import ADMIN_ONLY
-
-LOGGER = logging.getLogger(__name__)
-
-ServiceHandler = Callable[[Any], Awaitable[None]]
-
-
-def _context_user_id(call: Any) -> str | None:
-    context = getattr(call, "context", None)
-    user_id = getattr(context, "user_id", None) if context is not None else None
-    if isinstance(user_id, str) and user_id:
-        return user_id
-    return None
-
-
-def _stamp() -> str:
-    return datetime.datetime.now(datetime.timezone.utc).isoformat(
-        timespec="seconds"
-    )
-
-
-def permission_gate(
-    service: str,
-    policy: str,
-    database_of: Callable[[Any], Any],
-) -> Callable[[ServiceHandler], ServiceHandler]:
-    """Wrap ``handler`` with the Feature 09 permission check.
-
-    ``database_of`` resolves the live database from the call-time
-    runtime (the same ``find_runtime`` the handler uses), so the gate
-    never opens its own connection.  The verdict is fail-closed:
-    absent allowlist row, unknown id, no user context — all not admin.
-    """
-
-    def _wrap(handler: ServiceHandler) -> ServiceHandler:
-        if policy != ADMIN_ONLY:
-            return handler
-
-        async def _gated(call: Any) -> None:
-            user_id = _context_user_id(call)
-            allowed = user_id is not None and await is_admin(
-                database_of(call), user_id
-            )
-            if not allowed:
-                LOGGER.warning(
-                    "NestQuest denied %s: caller user_id=%s at %s",
-                    service,
-                    user_id if user_id is not None else "none",
-                    _stamp(),
-                )
-                raise Unauthorized(
-                    f"User '{user_id if user_id is not None else 'none'}' "
-                    f"is not allowed to call nestquest.{service}"
-                )
-            LOGGER.debug(
-                "NestQuest allowed %s: caller user_id=%s at %s",
-                service,
-                user_id,
-                _stamp(),
-            )
-            await handler(call)
-
-        return _gated
-
-    return _wrap

custom_components/nestquest/presence.py

@@ -1,11 +0,0 @@
-"""Re-export of :mod:`custom_components.nestquest.core.presence` for the integration package.
-
-The presence and custody model lives in
-:mod:`custom_components.nestquest.core.presence` (extracted in
-task 510c1f78); this module re-exports it so existing
-``from .presence import ...`` references inside the integration keep
-working.
-"""
-from __future__ import annotations
-
-from .core.presence import *  # noqa: F401,F403

custom_components/nestquest/quest_definitions.py

@@ -1,11 +0,0 @@
-"""Re-export of :mod:`custom_components.nestquest.core.quest_definitions` for the integration package.
-
-The quest definitions business layer lives in
-:mod:`custom_components.nestquest.core.quest_definitions` (extracted in
-task 510c1f78); this module re-exports it so existing
-``from .quest_definitions import ...`` references inside the integration
-keep working.
-"""
-from __future__ import annotations
-
-from .core.quest_definitions import *  # noqa: F401,F403

custom_components/nestquest/recurrence.py

@@ -1,10 +0,0 @@
-"""Re-export of :mod:`custom_components.nestquest.core.recurrence` for the integration package.
-
-The recurrence model lives in :mod:`custom_components.nestquest.core.recurrence`
-(extracted in task d0b691d8); this module re-exports it so existing
-``from .recurrence import ...`` references inside the integration keep
-working.
-"""
-from __future__ import annotations
-
-from .core.recurrence import *  # noqa: F401,F403

custom_components/nestquest/schema.py

@@ -1,11 +0,0 @@
-"""Re-export of :mod:`custom_components.nestquest.core.schema` for the integration package.
-
-The declarative schema DDL lives in
-:mod:`custom_components.nestquest.core.schema` (extracted in
-task d0b691d8); this module re-exports it so existing
-``from .schema import ...`` references inside the integration keep
-working.
-"""
-from __future__ import annotations
-
-from .core.schema import *  # noqa: F401,F403

custom_components/nestquest/sensor.py

@@ -32,6 +32,7 @@ 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 (
@@ -39,14 +40,23 @@ from .coordinator import (
     NestQuestCoordinator,
     QuestInstanceView,
 )
+from .core.snapshot import instance_payload
 
-#: Home Assistant's state machine refuses states longer than 255
+#: 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.
@@ -63,40 +73,6 @@ def _state_within_limit(state: Any) -> Any:
     return state
 
 
-def _instance_payload(
-    instances: Iterable[QuestInstanceView], *, include_missed: bool
-) -> list[dict[str, Any]]:
-    """Shape instance dicts per ENTITIES-AND-SERVICES.md §1.
-
-    ``state`` maps the coordinator's derived ``done`` to the panel's
-    ``completed`` spelling; ``missed`` instances are omitted unless
-    ``include_missed`` (the admin payload, D-009, keeps them with
-    their ``missed`` state).
-    """
-    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
-
-
 #: 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).
@@ -131,6 +107,51 @@ def _next_open_quest(
     )
 
 
+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.
 
@@ -215,10 +236,10 @@ class NestQuestQuestsDueTodaySensor(_NestQuestChildDaySensor):
         if child is None:
             return None
         return {
-            "instances": _instance_payload(
+            "instances": instance_payload(
                 child.instances, include_missed=False
             ),
-            "admin_instances": _instance_payload(
+            "admin_instances": instance_payload(
                 child.instances, include_missed=True
             ),
             "child_id": child.child_id,
@@ -389,7 +410,12 @@ class _NestQuestHouseholdSensor(CoordinatorEntity, SensorEntity):
 
 
 class NestQuestHouseholdDueTodaySensor(_NestQuestHouseholdSensor):
-    """Total quests due today across active children."""
+    """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
@@ -413,7 +439,8 @@ class NestQuestHouseholdDueTodaySensor(_NestQuestHouseholdSensor):
             "children": {
                 str(child.child_id): child.due_today
                 for child in data.children
-            }
+            },
+            "child_roster": _child_roster(data.children),
         }
 
 

custom_components/nestquest/service_policy.py

@@ -1,11 +0,0 @@
-"""Re-export of :mod:`custom_components.nestquest.core.service_policy` for the integration package.
-
-The service policy registry lives in
-:mod:`custom_components.nestquest.core.service_policy` (extracted in
-task 510c1f78); this module re-exports it so existing
-``from .service_policy import ...`` references inside the integration
-keep working.
-"""
-from __future__ import annotations
-
-from .core.service_policy import *  # noqa: F401,F403

custom_components/nestquest/services.py

@@ -1,61 +1,36 @@
-"""Domain-global NestQuest service schemas and handlers (Feature 09).
+"""The domain-global ``nestquest.complete_quest`` service (Feature 18).
 
 Registration is domain-scoped and happens once (see
-:func:`async_register_services`); handlers resolve a live database at
-call time through the injected ``find_runtime`` callable.  Permission
-checks are Feature 09 later tasks — this module only validates payload
-shape and forwards to the Feature 03/06/08 business layers (and the
-presence DAOs).  ``export_history_csv`` is registered with a schema but
-raises until Feature 13.  ``regenerate`` is supplied by the caller so
-the Feature 07 handler stays the one in ``__init__``.
+: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
 
-import datetime
 from collections.abc import Awaitable, Callable
 from typing import Any
-from zoneinfo import ZoneInfo
 
 import voluptuous as vol
 from homeassistant.core import HomeAssistant
 from homeassistant.exceptions import HomeAssistantError
 
-from . import children as children_layer
-from . import completion as completion_layer
-from . import quest_definitions as quest_definitions_layer
+from .api_client import NestQuestApiError
 from .const import (
     DOMAIN,
     DOMAIN_SERVICES,
-    QUEST_WINDOWS,
     SERVICE_COMPLETE_QUEST,
-    SERVICE_CREATE_PRESENCE_OVERRIDE,
-    SERVICE_CREATE_QUEST_DEFINITION,
-    SERVICE_DELETE_PRESENCE_OVERRIDE,
-    SERVICE_EXPORT_HISTORY_CSV,
-    SERVICE_MANAGE_CHILD,
-    SERVICE_REGENERATE,
-    SERVICE_SET_PRESENCE_PATTERN,
-    SERVICE_SET_QUEST_DEFINITION_ACTIVE,
-    SERVICE_UNCOMPLETE_QUEST,
-    SERVICE_UPDATE_QUEST_DEFINITION,
 )
-from .dao_presence import PresenceOverridesDao, PresenceSchedulesDao
-from .events import fire_quest_completed, fire_quest_uncompleted
-from .materialize import regenerate_for_child
-from .permissions import permission_gate
-from .presence import PresenceSchedule
-from .recurrence import ScheduleRule
-from .service_policy import SERVICE_POLICY
 
 FindRuntime = Callable[[HomeAssistant], Any]
 ServiceHandler = Callable[[Any], Awaitable[None]]
 
 ACTOR_PANEL = "panel"
 ACTOR_USER = "user"
-MANAGE_CHILD_CREATE = "create"
-MANAGE_CHILD_EDIT = "edit"
-MANAGE_CHILD_SET_ACTIVE = "set_active"
-MANAGE_CHILD_REORDER = "reorder"
 
 
 def _strict_int(value: object) -> int:
@@ -65,82 +40,6 @@ def _strict_int(value: object) -> int:
     return value
 
 
-def _strict_bool(value: object) -> bool:
-    """Reject ints and other truthy values; require a real bool."""
-    if type(value) is not bool:
-        raise vol.Invalid(f"expected bool, got {value!r}")
-    return value
-
-
-def _weekday_list(value: object) -> list[int]:
-    if type(value) is not list:
-        raise vol.Invalid(f"expected a list of weekday ints, got {value!r}")
-    return [_strict_int(item) for item in value]
-
-
-def _presence_pattern(value: object) -> dict[int, list[int]]:
-    if not isinstance(value, dict):
-        raise vol.Invalid(f"pattern must be a mapping, got {value!r}")
-    pattern: dict[int, list[int]] = {}
-    for week, days in value.items():
-        if isinstance(week, str):
-            try:
-                week_index = int(week)
-            except ValueError as err:
-                raise vol.Invalid(
-                    f"pattern week index must be an integer, got {week!r}"
-                ) from err
-            if str(week_index) != week:
-                raise vol.Invalid(
-                    f"pattern week index must be an integer, got {week!r}"
-                )
-        else:
-            week_index = _strict_int(week)
-        pattern[week_index] = _weekday_list(days)
-    return pattern
-
-
-def _window_entry(value: object) -> str | tuple[str, str | None]:
-    if isinstance(value, str):
-        if value not in QUEST_WINDOWS:
-            raise vol.Invalid(f"unknown window {value!r}")
-        return value
-    if isinstance(value, dict):
-        parsed = vol.Schema(
-            {
-                vol.Required("window"): vol.In(QUEST_WINDOWS),
-                vol.Optional("due_time"): str,
-            }
-        )(value)
-        due_time = parsed.get("due_time")
-        if due_time is None:
-            return parsed["window"]
-        return (parsed["window"], due_time)
-    raise vol.Invalid(
-        f"windows entry must be a window name or object, got {value!r}"
-    )
-
-
-def _windows(value: object) -> list[str | tuple[str, str | None]]:
-    if type(value) is not list:
-        raise vol.Invalid(f"windows must be a list, got {value!r}")
-    if not value:
-        raise vol.Invalid("windows must not be empty")
-    return [_window_entry(entry) for entry in value]
-
-
-def _int_list(value: object) -> list[int]:
-    if type(value) is not list:
-        raise vol.Invalid(f"expected a list of ints, got {value!r}")
-    return [_strict_int(item) for item in value]
-
-
-def _rule_dict(value: object) -> dict:
-    if not isinstance(value, dict):
-        raise vol.Invalid(f"rule must be a dict, got {value!r}")
-    return value
-
-
 SCHEMA_COMPLETE_QUEST = vol.Schema(
     {
         vol.Required("instance_id"): _strict_int,
@@ -150,102 +49,22 @@ SCHEMA_COMPLETE_QUEST = vol.Schema(
     }
 )
 
-SCHEMA_UNCOMPLETE_QUEST = SCHEMA_COMPLETE_QUEST
-
-SCHEMA_CREATE_QUEST_DEFINITION = vol.Schema(
-    {
-        vol.Required("title"): str,
-        vol.Required("rule"): _rule_dict,
-        vol.Required("assignee_child_ids"): vol.All(
-            _int_list, vol.Length(min=1)
-        ),
-        vol.Required("windows"): _windows,
-        vol.Optional("description"): str,
-        vol.Optional("icon"): str,
-    }
-)
-
-SCHEMA_UPDATE_QUEST_DEFINITION = vol.Schema(
-    {
-        vol.Required("definition_id"): _strict_int,
-        vol.Optional("title"): str,
-        vol.Optional("description"): vol.Any(str, None),
-        vol.Optional("icon"): vol.Any(str, None),
-        vol.Optional("rule"): _rule_dict,
-        vol.Optional("windows"): _windows,
-    }
-)
-
-SCHEMA_SET_QUEST_DEFINITION_ACTIVE = vol.Schema(
-    {
-        vol.Required("definition_id"): _strict_int,
-        vol.Required("is_active"): _strict_bool,
-    }
-)
-
-SCHEMA_SET_PRESENCE_PATTERN = vol.Schema(
-    {
-        vol.Required("child_id"): _strict_int,
-        vol.Required("cycle_length_weeks"): _strict_int,
-        vol.Required("anchor_date"): str,
-        vol.Required("pattern"): _presence_pattern,
-    }
-)
-
-SCHEMA_CREATE_PRESENCE_OVERRIDE = vol.Schema(
-    {
-        vol.Required("child_id"): _strict_int,
-        vol.Required("start_date"): str,
-        vol.Required("end_date"): str,
-        vol.Required("is_present"): _strict_bool,
-        vol.Optional("note"): str,
-    }
-)
-
-SCHEMA_DELETE_PRESENCE_OVERRIDE = vol.Schema(
-    {
-        vol.Required("override_id"): _strict_int,
-    }
-)
-
-SCHEMA_EXPORT_HISTORY_CSV = vol.Schema({})
-
-SCHEMA_MANAGE_CHILD = vol.Schema(
-    {
-        vol.Required("action"): vol.In(
-            [
-                MANAGE_CHILD_CREATE,
-                MANAGE_CHILD_EDIT,
-                MANAGE_CHILD_SET_ACTIVE,
-                MANAGE_CHILD_REORDER,
-            ]
-        ),
-        vol.Optional("child_id"): _strict_int,
-        vol.Optional("display_name"): str,
-        vol.Optional("colour"): str,
-        vol.Optional("avatar_ref"): str,
-        vol.Optional("sort_order"): _strict_int,
-        vol.Optional("is_active"): _strict_bool,
-        vol.Optional("ordered_ids"): _int_list,
-    }
-)
-
 
 def _require_runtime(hass: HomeAssistant, find_runtime: FindRuntime):
     runtime = find_runtime(hass)
     if runtime is None:
         raise HomeAssistantError(
-            "NestQuest has no live database; cannot run this service"
+            "NestQuest is not loaded; cannot run this service"
         )
     return runtime
 
 
 async def _refresh_entities(runtime: Any) -> None:
-    """Force an immediate coordinator refresh after a service mutation.
+    """Force an immediate coordinator refresh after the service call.
 
-    Only the SERVICE paths call this — the scheduled materialize and
+    Only the SERVICE path calls this — the scheduled materialize and
     rollover internals are direct function calls and never widen this
-    gate — so entities reflect a completion the moment the service
+    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)
@@ -253,12 +72,6 @@ async def _refresh_entities(runtime: Any) -> None:
         await coordinator.async_refresh()
 
 
-def _generation_kwargs(hass: HomeAssistant, runtime: Any) -> dict[str, Any]:
-    time_zone = ZoneInfo(hass.config.time_zone)
-    today = datetime.datetime.now(time_zone).date()
-    return {"today": today, "horizon_days": runtime.settings.horizon_days}
-
-
 def _actor_kwargs(call: Any) -> dict[str, Any]:
     actor = call.data["actor"]
     if actor == ACTOR_PANEL:
@@ -301,243 +114,50 @@ def _complete_quest(
     async def _handler(call: Any) -> None:
         runtime = _require_runtime(hass, find_runtime)
         instance_id = call.data["instance_id"]
-        # ``appended`` is decided under the same lock as the write, so
-        # a concurrent duplicate call (a double tap) can not produce a
-        # second transition event: the loser appends nothing.
-        result = await completion_layer.complete_instance(
-            runtime.database,
-            instance_id,
-            **_actor_kwargs(call),
-        )
-        if result.appended:
-            await fire_quest_completed(
-                hass,
-                runtime.database,
-                instance_id,
-                was_on_time=result.was_on_time,
-            )
-            await _refresh_entities(runtime)
-
-    return _with_errors(_handler)
-
-
-def _uncomplete_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"]
-        result = await completion_layer.uncomplete_instance(
-            runtime.database,
-            instance_id,
-            **_actor_kwargs(call),
-        )
-        if result.appended:
-            await fire_quest_uncompleted(
-                hass, runtime.database, instance_id
-            )
-            await _refresh_entities(runtime)
-
-    return _with_errors(_handler)
-
-
-def _create_quest_definition(
-    hass: HomeAssistant, find_runtime: FindRuntime
-) -> ServiceHandler:
-    async def _handler(call: Any) -> None:
-        database = _require_runtime(hass, find_runtime).database
-        data = call.data
-        await quest_definitions_layer.create_quest_definition(
-            database,
-            data["title"],
-            ScheduleRule.from_dict(data["rule"]),
-            data["assignee_child_ids"],
-            data["windows"],
-            description=data.get("description"),
-            icon=data.get("icon"),
-        )
-
-    return _with_errors(_handler)
-
-
-def _update_quest_definition(
-    hass: HomeAssistant, find_runtime: FindRuntime
-) -> ServiceHandler:
-    async def _handler(call: Any) -> None:
-        runtime = _require_runtime(hass, find_runtime)
-        data = call.data
-        kwargs: dict[str, Any] = _generation_kwargs(hass, runtime)
-        if "title" in data:
-            kwargs["title"] = data["title"]
-        if "description" in data:
-            kwargs["description"] = data["description"]
-        if "icon" in data:
-            kwargs["icon"] = data["icon"]
-        if "rule" in data:
-            kwargs["rule"] = ScheduleRule.from_dict(data["rule"])
-        if "windows" in data:
-            kwargs["windows"] = data["windows"]
-        await quest_definitions_layer.edit_quest_definition(
-            runtime.database, data["definition_id"], **kwargs
-        )
-
-    return _with_errors(_handler)
-
-
-def _set_quest_definition_active(
-    hass: HomeAssistant, find_runtime: FindRuntime
-) -> ServiceHandler:
-    async def _handler(call: Any) -> None:
-        runtime = _require_runtime(hass, find_runtime)
-        await quest_definitions_layer.set_quest_definition_active(
-            runtime.database,
-            call.data["definition_id"],
-            call.data["is_active"],
-            **_generation_kwargs(hass, runtime),
-        )
-
-    return _with_errors(_handler)
-
-
-def _set_presence_pattern(
-    hass: HomeAssistant, find_runtime: FindRuntime
-) -> ServiceHandler:
-    async def _handler(call: Any) -> None:
-        runtime = _require_runtime(hass, find_runtime)
-        data = call.data
-        schedule = PresenceSchedule(
-            data["child_id"],
-            data["cycle_length_weeks"],
-            data["anchor_date"],
-            data["pattern"],
-        )
-        await PresenceSchedulesDao(runtime.database).upsert_by_child(
-            schedule.child_id,
-            schedule.cycle_length_weeks,
-            schedule.anchor_date.isoformat(),
-            schedule.encode(),
-        )
-        await regenerate_for_child(
-            runtime.database,
-            schedule.child_id,
-            **_generation_kwargs(hass, runtime),
-        )
-
-    return _with_errors(_handler)
-
-
-def _create_presence_override(
-    hass: HomeAssistant, find_runtime: FindRuntime
-) -> ServiceHandler:
-    async def _handler(call: Any) -> None:
-        runtime = _require_runtime(hass, find_runtime)
-        data = call.data
-        await PresenceOverridesDao(runtime.database).create(
-            data["child_id"],
-            data["start_date"],
-            data["end_date"],
-            data["is_present"],
-            note=data.get("note"),
-        )
-        await regenerate_for_child(
-            runtime.database,
-            data["child_id"],
-            **_generation_kwargs(hass, runtime),
-        )
-
-    return _with_errors(_handler)
-
-
-def _delete_presence_override(
-    hass: HomeAssistant, find_runtime: FindRuntime
-) -> ServiceHandler:
-    async def _handler(call: Any) -> None:
-        runtime = _require_runtime(hass, find_runtime)
-        dao = PresenceOverridesDao(runtime.database)
-        override_id = call.data["override_id"]
-        override = await dao.get(override_id)
-        if override is None:
+        # 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(
-                f"override_id: presence override {override_id} does not exist"
+                "nestquest.complete_quest completes through the API's "
+                "panel route as the tapped child profile; actor must "
+                "be 'panel' with actor_child_id"
             )
-        await dao.delete(override_id)
-        await regenerate_for_child(
-            runtime.database,
-            override.child_id,
-            **_generation_kwargs(hass, runtime),
+        # 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,
         )
-
-    return _with_errors(_handler)
-
-
-async def _export_history_csv(_call: Any) -> None:
-    raise HomeAssistantError(
-        "CSV history export is not implemented until Feature 13"
-    )
-
-
-def _manage_child(
-    hass: HomeAssistant, find_runtime: FindRuntime
-) -> ServiceHandler:
-    async def _handler(call: Any) -> None:
-        database = _require_runtime(hass, find_runtime).database
-        data = call.data
-        action = data["action"]
-        if action == MANAGE_CHILD_CREATE:
-            display_name = data.get("display_name")
-            if display_name is None:
-                raise HomeAssistantError(
-                    "display_name is required when action is create"
-                )
-            kwargs: dict[str, Any] = {}
-            if "colour" in data:
-                kwargs["colour"] = data["colour"]
-            if "avatar_ref" in data:
-                kwargs["avatar_ref"] = data["avatar_ref"]
-            if "sort_order" in data:
-                kwargs["sort_order"] = data["sort_order"]
-            await children_layer.create_child(
-                database, display_name, **kwargs
-            )
-            return
-        if action == MANAGE_CHILD_EDIT:
-            child_id = data.get("child_id")
-            if child_id is None:
-                raise HomeAssistantError(
-                    "child_id is required when action is edit"
-                )
-            kwargs = {}
-            if "display_name" in data:
-                kwargs["display_name"] = data["display_name"]
-            if "colour" in data:
-                kwargs["colour"] = data["colour"]
-            if "avatar_ref" in data:
-                kwargs["avatar_ref"] = data["avatar_ref"]
-            if "sort_order" in data:
-                kwargs["sort_order"] = data["sort_order"]
-            await children_layer.edit_child(database, child_id, **kwargs)
-            return
-        if action == MANAGE_CHILD_SET_ACTIVE:
-            child_id = data.get("child_id")
-            is_active = data.get("is_active")
-            if child_id is None:
-                raise HomeAssistantError(
-                    "child_id is required when action is set_active"
-                )
-            if is_active is None:
-                raise HomeAssistantError(
-                    "is_active is required when action is set_active"
-                )
-            await children_layer.set_child_active(
-                database, child_id, is_active
-            )
-            return
-        ordered_ids = data.get("ordered_ids")
-        if ordered_ids is None:
+        if complete_instance is None:
             raise HomeAssistantError(
-                "ordered_ids is required when action is reorder"
+                "NestQuest API is not configured; cannot complete a "
+                "quest"
             )
-        await children_layer.reorder_children(database, ordered_ids)
+        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)
 
@@ -546,84 +166,25 @@ def async_register_services(
     hass: HomeAssistant,
     *,
     find_runtime: FindRuntime,
-    regenerate_handler: ServiceHandler,
 ) -> None:
-    """Register every canonical service once at domain scope.
+    """Register the panel completion service once at domain scope.
 
-    Every service — regenerate included — passes through the Feature
-    09 permission gate before its handler runs; the gate reads
-    :data:`~.service_policy.SERVICE_POLICY`, so no service can be
-    registered exempt from the policy.
+    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_REGENERATE):
+    if hass.services.has_service(DOMAIN, SERVICE_COMPLETE_QUEST):
         return
-    gate = permission_gate
-    specs: list[tuple[str, ServiceHandler, object]] = [
-        (SERVICE_REGENERATE, regenerate_handler, None),
-        (
-            SERVICE_COMPLETE_QUEST,
-            _complete_quest(hass, find_runtime),
-            SCHEMA_COMPLETE_QUEST,
-        ),
-        (
-            SERVICE_UNCOMPLETE_QUEST,
-            _uncomplete_quest(hass, find_runtime),
-            SCHEMA_UNCOMPLETE_QUEST,
-        ),
-        (
-            SERVICE_CREATE_QUEST_DEFINITION,
-            _create_quest_definition(hass, find_runtime),
-            SCHEMA_CREATE_QUEST_DEFINITION,
-        ),
-        (
-            SERVICE_UPDATE_QUEST_DEFINITION,
-            _update_quest_definition(hass, find_runtime),
-            SCHEMA_UPDATE_QUEST_DEFINITION,
-        ),
-        (
-            SERVICE_SET_QUEST_DEFINITION_ACTIVE,
-            _set_quest_definition_active(hass, find_runtime),
-            SCHEMA_SET_QUEST_DEFINITION_ACTIVE,
-        ),
-        (
-            SERVICE_SET_PRESENCE_PATTERN,
-            _set_presence_pattern(hass, find_runtime),
-            SCHEMA_SET_PRESENCE_PATTERN,
-        ),
-        (
-            SERVICE_CREATE_PRESENCE_OVERRIDE,
-            _create_presence_override(hass, find_runtime),
-            SCHEMA_CREATE_PRESENCE_OVERRIDE,
-        ),
-        (
-            SERVICE_DELETE_PRESENCE_OVERRIDE,
-            _delete_presence_override(hass, find_runtime),
-            SCHEMA_DELETE_PRESENCE_OVERRIDE,
-        ),
-        (
-            SERVICE_EXPORT_HISTORY_CSV,
-            _export_history_csv,
-            SCHEMA_EXPORT_HISTORY_CSV,
-        ),
-        (
-            SERVICE_MANAGE_CHILD,
-            _manage_child(hass, find_runtime),
-            SCHEMA_MANAGE_CHILD,
-        ),
-    ]
-
-    def _database_of(_call: Any) -> Any:
-        return _require_runtime(hass, find_runtime).database
-
-    for service, handler, schema in specs:
-        gated = gate(
-            service, SERVICE_POLICY[service], _database_of
-        )(handler)
-        hass.services.async_register(DOMAIN, service, gated, schema=schema)
+    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)
+            hass.services.async_remove(DOMAIN, service)

custom_components/nestquest/services.yaml

@@ -1,15 +1,8 @@
 # Service declarations for the NestQuest integration (Home Assistant
 # services.yaml metadata). Services are domain-scoped: nested under the
-# "nestquest" domain, not repeated per config entry.
-
-regenerate:
-  name: Regenerate quest instances
-  description: >-
-    Regenerate every future quest instance for the household over the rolling
-    horizon, using the same idempotent materialization as the daily rollover
-    and the startup backfill. Safe to call at any time: a re-run refreshes the
-    same rows instead of duplicating them, and completed instances are never
-    touched.
+# "nestquest" domain, not repeated per config entry.  Since Feature 18
+# only the panel completion service remains — every admin operation
+# moved to the PWA and the API service's admin routes.
 
 complete_quest:
   name: Complete quest
@@ -43,284 +36,4 @@ complete_quest:
       description: Home Assistant user id when actor is user and no call context is present.
       required: false
       selector:
-        text:
-
-uncomplete_quest:
-  name: Uncomplete quest
-  description: Undo a quest instance completion.
-  fields:
-    instance_id:
-      name: Instance ID
-      description: The quest instance to uncomplete.
-      required: true
-      selector:
-        number:
-          mode: box
-    actor:
-      name: Actor
-      description: Who is undoing the completion (panel or user).
-      required: true
-      selector:
-        select:
-          options:
-            - panel
-            - user
-    actor_child_id:
-      name: Actor child ID
-      description: The tapped child profile. Required when actor is panel.
-      required: false
-      selector:
-        number:
-          mode: box
-    actor_user_id:
-      name: Actor user ID
-      description: Home Assistant user id when actor is user and no call context is present.
-      required: false
-      selector:
-        text:
-
-create_quest_definition:
-  name: Create quest definition
-  description: Create a quest definition with its schedule rule, assignees and windows.
-  fields:
-    title:
-      name: Title
-      description: Display title for the quest.
-      required: true
-      selector:
-        text:
-    rule:
-      name: Rule
-      description: Recurrence rule as a mapping (rule_type plus shape fields).
-      required: true
-      selector:
-        object:
-    assignee_child_ids:
-      name: Assignee child IDs
-      description: Child ids this definition is assigned to.
-      required: true
-      selector:
-        object:
-    windows:
-      name: Windows
-      description: Day windows (morning, afternoon, evening), optionally with a due time.
-      required: true
-      selector:
-        object:
-    description:
-      name: Description
-      description: Optional longer description.
-      required: false
-      selector:
-        text:
-    icon:
-      name: Icon
-      description: Optional icon name.
-      required: false
-      selector:
-        text:
-
-update_quest_definition:
-  name: Update quest definition
-  description: Edit a quest definition's title, description, icon, rule or windows.
-  fields:
-    definition_id:
-      name: Definition ID
-      description: The quest definition to update.
-      required: true
-      selector:
-        number:
-          mode: box
-    title:
-      name: Title
-      description: Replacement display title.
-      required: false
-      selector:
-        text:
-    description:
-      name: Description
-      description: Replacement description, or null to clear.
-      required: false
-      selector:
-        text:
-    icon:
-      name: Icon
-      description: Replacement icon, or null to clear.
-      required: false
-      selector:
-        text:
-    rule:
-      name: Rule
-      description: Replacement recurrence rule as a mapping.
-      required: false
-      selector:
-        object:
-    windows:
-      name: Windows
-      description: Replacement day windows.
-      required: false
-      selector:
-        object:
-
-set_quest_definition_active:
-  name: Set quest definition active
-  description: Deactivate or reactivate a quest definition.
-  fields:
-    definition_id:
-      name: Definition ID
-      description: The quest definition to update.
-      required: true
-      selector:
-        number:
-          mode: box
-    is_active:
-      name: Active
-      description: Whether the definition should generate future instances.
-      required: true
-      selector:
-        boolean:
-
-set_presence_pattern:
-  name: Set presence pattern
-  description: Upsert a child's repeating presence schedule.
-  fields:
-    child_id:
-      name: Child ID
-      description: The child whose schedule is being set.
-      required: true
-      selector:
-        number:
-          mode: box
-    cycle_length_weeks:
-      name: Cycle length weeks
-      description: Number of weeks in the repeating cycle (1 to 4).
-      required: true
-      selector:
-        number:
-          mode: box
-          min: 1
-          max: 4
-    anchor_date:
-      name: Anchor date
-      description: Cycle anchor as a YYYY-MM-DD date.
-      required: true
-      selector:
-        date:
-    pattern:
-      name: Pattern
-      description: Mapping of week index to present weekday ints (Monday is 0).
-      required: true
-      selector:
-        object:
-
-create_presence_override:
-  name: Create presence override
-  description: Create a date-range presence override for a child.
-  fields:
-    child_id:
-      name: Child ID
-      description: The child the override applies to.
-      required: true
-      selector:
-        number:
-          mode: box
-    start_date:
-      name: Start date
-      description: Inclusive start date (YYYY-MM-DD).
-      required: true
-      selector:
-        date:
-    end_date:
-      name: End date
-      description: Inclusive end date (YYYY-MM-DD).
-      required: true
-      selector:
-        date:
-    is_present:
-      name: Present
-      description: Whether the child is present for this range.
-      required: true
-      selector:
-        boolean:
-    note:
-      name: Note
-      description: Optional note stored with the override.
-      required: false
-      selector:
-        text:
-
-delete_presence_override:
-  name: Delete presence override
-  description: Delete a presence override by id.
-  fields:
-    override_id:
-      name: Override ID
-      description: The override to delete.
-      required: true
-      selector:
-        number:
-          mode: box
-
-export_history_csv:
-  name: Export history CSV
-  description: Export completion history as CSV. Not implemented until Feature 13.
-
-manage_child:
-  name: Manage child
-  description: Create, edit, activate or reorder child profiles.
-  fields:
-    action:
-      name: Action
-      description: create, edit, set_active, or reorder.
-      required: true
-      selector:
-        select:
-          options:
-            - create
-            - edit
-            - set_active
-            - reorder
-    child_id:
-      name: Child ID
-      description: Required for edit and set_active.
-      required: false
-      selector:
-        number:
-          mode: box
-    display_name:
-      name: Display name
-      description: Required for create; optional for edit.
-      required: false
-      selector:
-        text:
-    colour:
-      name: Colour
-      description: Optional colour string.
-      required: false
-      selector:
-        text:
-    avatar_ref:
-      name: Avatar
-      description: Optional avatar reference.
-      required: false
-      selector:
-        text:
-    sort_order:
-      name: Sort order
-      description: Optional panel sort order.
-      required: false
-      selector:
-        number:
-          mode: box
-    is_active:
-      name: Active
-      description: Required for set_active.
-      required: false
-      selector:
-        boolean:
-    ordered_ids:
-      name: Ordered IDs
-      description: Complete permutation of child ids. Required for reorder.
-      required: false
-      selector:
-        object:
+        text:

custom_components/nestquest/sse.py

@@ -0,0 +1,172 @@
+"""HA-bus subscription over the API service's panel SSE stream.
+
+The NestQuest API service (Feature 16) publishes every quest
+transition on ``GET /api/v1/panel/events`` as Server-Sent Events
+frames.  This module is the integration-side subscriber: ONE
+background task consumes :meth:`~.api_client.NestQuestApiClient
+.stream_events` and re-fires each frame on ``hass.bus`` with the SAME
+event type and payload fields the local transition path
+(:mod:`~.events`) emits — ``nestquest_quest_completed``,
+``nestquest_quest_uncompleted``, ``nestquest_quest_missed`` and
+``nestquest_child_day_complete`` — so the four blueprints fire
+identically whether a completion happens through the integration's own
+service or through the API service's panel route.
+
+Failure handling: a failed stream (API down, network blip, non-2xx, a
+dropped connection) is retried FOREVER with a bounded exponential
+backoff — :data:`RECONNECT_MIN_SECONDS` after the first failure,
+doubling up to :data:`RECONNECT_MAX_SECONDS` — so a long API outage
+neither pins the event loop nor spams the log, and a frame received on
+a healthy stream resets the backoff.  Nothing escapes the task: every
+failure is logged with its reason and the loop reconnects; a
+:class:`asyncio.CancelledError` (from :meth:`stop` or integration
+unload) is the only thing that ends it, and it stops cleanly — no
+frame fires after :meth:`stop` returns and the response is closed.
+"""
+from __future__ import annotations
+
+import asyncio
+from typing import Any
+
+from .const import LOGGER
+
+__all__ = [
+    "NestQuestEventStream",
+    "RECONNECT_MAX_SECONDS",
+    "RECONNECT_MIN_SECONDS",
+]
+
+#: Delay before the FIRST reconnect attempt after a stream failure.
+#: One failed frame must not turn into a hot reconnect loop.
+RECONNECT_MIN_SECONDS = 5.0
+
+#: Ceiling for the exponential reconnect backoff: a long API outage
+#: retries at a calm fixed cadence instead of growing without bound.
+RECONNECT_MAX_SECONDS = 60.0
+
+
+class NestQuestEventStream:
+    """Consume the panel SSE stream in the background, fire the HA bus.
+
+    ONE instance per config entry, built in integration setup with the
+    SAME API client the coordinator polls (the client is stateless —
+    one shared session, one connection pool).  ``start()`` schedules
+    the background task; ``stop()`` cancels and awaits it, so unload
+    never leaks the task and no frame fires after teardown.  The task
+    itself is failure-proof: any exception from the stream (typed
+    :class:`~.api_client.NestQuestApiError` or anything else) is
+    logged and retried after the current backoff, never allowed to
+    escape the task.
+    """
+
+    def __init__(
+        self,
+        hass: Any,
+        client: Any,
+        *,
+        reconnect_min_seconds: float = RECONNECT_MIN_SECONDS,
+        reconnect_max_seconds: float = RECONNECT_MAX_SECONDS,
+    ) -> None:
+        """Store the hass bus target, the API client, and the backoff.
+
+        The client is anything exposing ``stream_events()`` (the real
+        :class:`~.api_client.NestQuestApiClient` in production, a stub
+        in tests).  The backoff bounds must be positive and the minimum
+        must not exceed the maximum — a misconfiguration should fail
+        loudly at construction, not quietly reconnect at delay 0.
+        """
+        if (
+            not isinstance(reconnect_min_seconds, (int, float))
+            or isinstance(reconnect_min_seconds, bool)
+            or reconnect_min_seconds <= 0
+            or reconnect_min_seconds > reconnect_max_seconds
+        ):
+            raise ValueError(
+                "reconnect_min_seconds must be a positive number no "
+                f"greater than reconnect_max_seconds, got "
+                f"{reconnect_min_seconds!r}"
+            )
+        if (
+            not isinstance(reconnect_max_seconds, (int, float))
+            or isinstance(reconnect_max_seconds, bool)
+            or reconnect_max_seconds <= 0
+        ):
+            raise ValueError(
+                f"reconnect_max_seconds must be a positive number, got "
+                f"{reconnect_max_seconds!r}"
+            )
+        self._hass = hass
+        self._client = client
+        self._min_backoff = float(reconnect_min_seconds)
+        self._max_backoff = float(reconnect_max_seconds)
+        self._backoff = float(reconnect_min_seconds)
+        self._task: asyncio.Task | None = None
+
+    @property
+    def task(self) -> asyncio.Task | None:
+        """The background task, or ``None`` when never started/stopped."""
+        return self._task
+
+    def start(self) -> None:
+        """Schedule the subscription task (idempotent while it runs)."""
+        if self._task is not None and not self._task.done():
+            return
+        self._backoff = self._min_backoff
+        self._task = asyncio.create_task(
+            self._run(), name="nestquest-sse-subscription"
+        )
+
+    async def stop(self) -> None:
+        """Cancel and await the subscription task.
+
+        Returns only after the task has actually finished, so unload
+        can rely on: no further frame is fired after ``stop()``, and
+        the underlying stream response has been closed.  Safe to call
+        when the task was never started or already stopped.
+        """
+        task, self._task = self._task, None
+        if task is None:
+            return
+        task.cancel()
+        try:
+            await task
+        except asyncio.CancelledError:
+            # The task's own cancellation surfaces here — expected and
+            # swallowed; a cancelling the CALLER would re-raise out of
+            # the surrounding await on its own.
+            pass
+
+    async def _run(self) -> None:
+        """Consume stream frames forever, reconnecting on failure."""
+        while True:
+            try:
+                async for event_type, payload in self._client.stream_events():
+                    # A frame arrived on a healthy stream: the next
+                    # failure reconnects quickly again.
+                    self._backoff = self._min_backoff
+                    try:
+                        self._hass.bus.async_fire(event_type, dict(payload))
+                    except Exception as err:
+                        # Firing one frame must never tear down a
+                        # healthy connection: log and keep consuming.
+                        LOGGER.error(
+                            "NestQuest panel event %s could not be fired "
+                            "on the Home Assistant event bus: %s",
+                            event_type,
+                            err,
+                        )
+            except asyncio.CancelledError:
+                # Unload / shutdown: stop cleanly, never converted.
+                raise
+            except Exception as err:
+                delay = self._backoff
+                self._backoff = min(
+                    self._backoff * 2, self._max_backoff
+                )
+                LOGGER.warning(
+                    "NestQuest panel event stream failed (%s); "
+                    "reconnecting in %.1f s",
+                    err,
+                    delay,
+                )
+                await asyncio.sleep(delay)

custom_components/nestquest/store.py

@@ -1,32 +0,0 @@
-"""Re-export of :mod:`custom_components.nestquest.core.store` for the integration package.
-
-The path resolver lives in
-:mod:`custom_components.nestquest.core.store` (extracted in task
-d0b691d8) and is Home-Assistant-free:
-:func:`custom_components.nestquest.core.store.async_get_db_path`
-takes the full database path.  This module re-exports it and provides
-the original ``async_get_db_path(hass)`` signature so the integration
-resolves the path from ``hass.config.path`` exactly as before.
-"""
-from __future__ import annotations
-
-from pathlib import Path
-
-from homeassistant.core import HomeAssistant
-
-from .core.const import SQLITE_DB_FILENAME
-from .core.store import async_get_db_path as _core_async_get_db_path
-from .core.store import _ensure_dir
-
-__all__ = ["async_get_db_path", "_ensure_dir"]
-
-
-async def async_get_db_path(hass: HomeAssistant) -> Path:
-    """Return the absolute path to the NestQuest SQLite database file.
-
-    Resolves the database file from ``hass.config.path`` and delegates to
-    :func:`custom_components.nestquest.core.store.async_get_db_path`,
-    which ensures the parent directory exists off the event loop via
-    :func:`asyncio.to_thread`.
-    """
-    return await _core_async_get_db_path(hass.config.path(SQLITE_DB_FILENAME))

custom_components/nestquest/strings.json

@@ -18,20 +18,19 @@
     "step": {
       "init": {
         "title": "NestQuest Settings",
-        "description": "Adjust how NestQuest plans, rolls over days, and idles its panel.",
+        "description": "Adjust how the NestQuest API client polls and reaches the NestQuest API service.",
         "data": {
-          "horizon_days": "Generation horizon (days)",
-          "day_rollover_time": "Day rollover time (HH:MM)",
           "panel_idle_timeout": "Panel idle timeout (seconds)",
-          "admin_user_ids": "Admin users (parents)"
+          "snapshot_staleness": "Last-good snapshot staleness (seconds)",
+          "api_base_url": "NestQuest API base URL (http://host:port)",
+          "panel_token": "Panel service token"
         }
       }
     },
     "errors": {
       "invalid": "Invalid value.",
-      "invalid_time": "Time must use 24-hour HH:MM format.",
-      "no_admins": "Select at least one admin user; an empty allowlist would lock everyone out.",
-      "invalid_admin": "Invalid admin selection."
+      "invalid_url": "Enter the API base URL as a full http:// or https:// URL with a host.",
+      "invalid_staleness": "Last-good snapshot staleness must be at least the update interval."
     }
   }
 }

custom_components/nestquest/sweep.py

@@ -1,132 +0,0 @@
-"""The nightly missed-quest sweep (Feature 11).
-
-At the configured day-rollover time (the same HA-local listener that
-re-materializes the rolling horizon) this job finds every instance
-whose ``due_date`` is before the HA-local date, that has NO completion
-event, and that falls after the persisted sweep watermark — and fires
-ONE ``nestquest_quest_missed`` event per instance with the documented
-payload.  The sweep is read-only over the domain tables: it never
-mutates an instance and never writes a completion event (``missed``
-is derived state, never an event_type — Feature 08's contract).
-
-Idempotency is the watermark: after a run, ``nestquest_meta_state``
-records the HA-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.
-"""
-from __future__ import annotations
-
-import asyncio
-import datetime
-import logging
-from zoneinfo import ZoneInfo
-
-from .const import EVENT_QUEST_MISSED
-from .dao_children import ChildrenDao
-from .dao_instances import QuestInstancesDao
-from .dao_meta import MetaStateDao
-from .dao_rules import QuestDefinitionsDao
-from .db import NestQuestDatabase
-
-LOGGER = logging.getLogger(__name__)
-
-#: meta_state key holding the HA-local date the sweep last ran.
-SWEEP_WATERMARK_KEY = "missed_sweep_last_run_date"
-
-#: One asyncio.Lock per (connection wrapper, running loop), mirroring
-#: the migration runner's pattern: the whole watermark read → query →
-#: fire → write span is one critical section, so an overlapping startup
-#: sweep and rollover sweep queue instead of double-announcing.  The
-#: loser re-reads the watermark INSIDE the lock, sees the winner's
-#: date, and fires nothing.
-_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
-
-#: UTC ISO-8601 timestamp policy shared with the DAO layers.
-_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 run_missed_sweep(
-    hass,
-    database: NestQuestDatabase,
-    *,
-    today: datetime.date | None = None,
-) -> int:
-    """Fire one missed event per unswept past-due open instance.
-
-    ``today`` optionally pins the HA-local date (threaded like the
-    materialization and completion layers); when omitted it is read
-    from ``hass.config.time_zone``.  Returns the number of events
-    fired.  Fires nothing and returns 0 when the watermark already
-    covers ``today`` (a same-night rerun).
-
-    The whole watermark read → query → fire → write span runs inside
-    the per-database sweep lock: an overlapping startup sweep and a
-    rollover sweep queue instead of interleaving, and the loser
-    re-reads the watermark inside the lock — sees the winner's date —
-    and announces nothing twice.
-    """
-    today_date = (
-        today
-        if today is not None
-        else datetime.datetime.now(ZoneInfo(hass.config.time_zone)).date()
-    )
-    today_iso = today_date.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 0
-
-        instances_dao = QuestInstancesDao(database)
-        rows = await instances_dao.list_missed_unswept(today_iso, watermark)
-        children_dao = ChildrenDao(database)
-        definitions_dao = QuestDefinitionsDao(database)
-        now_stamp = _now_stamp()
-        fired = 0
-        for instance in rows:
-            child = await children_dao.get(instance.child_id)
-            definition = await definitions_dao.get(instance.definition_id)
-            hass.bus.async_fire(
-                EVENT_QUEST_MISSED,
-                {
-                    "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,
-                },
-            )
-            fired += 1
-        await dao.set(SWEEP_WATERMARK_KEY, today_iso)
-    LOGGER.info(
-        "NestQuest missed sweep for %s fired %d event(s)", today_iso, fired
-    )
-    return fired

custom_components/nestquest/translations/en.json

@@ -18,20 +18,19 @@
     "step": {
       "init": {
         "title": "NestQuest Settings",
-        "description": "Adjust how NestQuest plans, rolls over days, and idles its panel.",
+        "description": "Adjust how the NestQuest API client polls and reaches the NestQuest API service.",
         "data": {
-          "horizon_days": "Generation horizon (days)",
-          "day_rollover_time": "Day rollover time (HH:MM)",
           "panel_idle_timeout": "Panel idle timeout (seconds)",
-          "admin_user_ids": "Admin users (parents)"
+          "snapshot_staleness": "Last-good snapshot staleness (seconds)",
+          "api_base_url": "NestQuest API base URL (http://host:port)",
+          "panel_token": "Panel service token"
         }
       }
     },
     "errors": {
       "invalid": "Invalid value.",
-      "invalid_time": "Time must use 24-hour HH:MM format.",
-      "no_admins": "Select at least one admin user; an empty allowlist would lock everyone out.",
-      "invalid_admin": "Invalid admin selection."
+      "invalid_url": "Enter the API base URL as a full http:// or https:// URL with a host.",
+      "invalid_staleness": "Last-good snapshot staleness must be at least the update interval."
     }
   }
 }