Bind the API port to a configurable LAN address for the reverse proxy

Publish port 8080 on ${NESTQUEST_BIND_ADDRESS:-127.0.0.1} so the shared
Traefik proxy (TLS for nestquest.cubecraftlabs.com) can reach the API
box, while an unconfigured deployment stays localhost-only. Document the
variable in deploy/.env.example and the production topology in
api/README.md.

Maestro task 9d121e76-e1ce-479f-aef5-0e5e9756fda8.

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

.dockerignore

@@ -0,0 +1,27 @@
+# Keep the image build context minimal: only api/ and the bundled
+# custom_components/nestquest/core/ are copied (see the Dockerfile);
+# everything else — VCS state, virtualenvs, tests, the frontend, and
+# any local secrets or database files — never enters the build.
+.git
+.gitignore
+.venv
+**/__pycache__
+**/*.py[cod]
+.pytest_cache
+**/*.db
+**/*.db-wal
+**/*.db-shm
+# Local configuration — never baked into an image.
+.env
+**/.env
+deploy
+design
+docs
+frontend
+orchestration_tests
+scripts
+templates
+tests
+uv.lock
+hacs.json
+*.md

.gitignore

@@ -5,3 +5,12 @@ __pycache__/
 .pytest_cache/
 *.metadata.json
 frontend/node_modules/
+
+# Feature 17 (API deployment): local secret config and runtime data
+# are never committed — compose reads deploy/.env; SQLite/WAL sidecar
+# files are container/volume artifacts.
+.env
+**/.env
+*.db
+*.db-wal
+*.db-shm

Dockerfile

@@ -0,0 +1,47 @@
+# Container image for the NestQuest API service (Feature 17).
+#
+# Build context is the REPOSITORY ROOT (compose sets it), because the
+# API loads the bundled domain layer from
+# custom_components/nestquest/core/ by file location
+# (api/nestquest_core.py): the image must carry both api/ and the
+# bundled core at their relative positions.  Everything else in the
+# repository is excluded via .dockerignore.
+#
+# Multi-stage so no pip/build toolchain survives into the runtime:
+# the builder installs the deployable's own manifest
+# (api/requirements.txt) into a staging prefix and the runtime copies
+# only the installed packages.  The service runs as a non-root user;
+# the SQLite database lives on the mounted volume at
+# /var/lib/nestquest (compose supplies NESTQUEST_DB_PATH pointing
+# there — configuration is environment-supplied, never baked in).
+FROM python:3.12-slim AS builder
+
+COPY api/requirements.txt /tmp/requirements.txt
+RUN pip install --no-cache-dir --prefix=/install -r /tmp/requirements.txt
+
+FROM python:3.12-slim
+
+# The staged dependency install from the builder (no pip, no wheels).
+COPY --from=builder /install /usr/local
+
+# /app is the repository-root equivalent: api/ resolves imports as
+# ``api.*`` and nestquest_core.py finds the bundled core one level up.
+WORKDIR /app
+COPY api/ ./api/
+COPY custom_components/nestquest/core/ ./custom_components/nestquest/core/
+
+# Non-root runtime user; owns the database volume mount point.
+RUN useradd --system --create-home --home-dir /home/nestquest nestquest \
+    && mkdir -p /var/lib/nestquest \
+    && chown nestquest:nestquest /var/lib/nestquest
+USER nestquest
+
+ENV PYTHONUNBUFFERED=1 PYTHONDONTWRITEBYTECODE=1
+
+# The database path and the service token / OIDC settings are supplied
+# by the environment (compose env_file), never committed into the image.
+ENV NESTQUEST_DB_PATH=/var/lib/nestquest/nestquest.db
+VOLUME /var/lib/nestquest
+
+EXPOSE 8080
+CMD ["uvicorn", "--factory", "api.app:create_app", "--host", "0.0.0.0", "--port", "8080"]

admin/package-lock.json

@@ -8,6 +8,7 @@
       "name": "nestquest-admin",
       "version": "0.0.0",
       "dependencies": {
+        "lucide-react": "^1.47.0",
         "react": "^19.2.0",
         "react-dom": "^19.2.0"
       },
@@ -2257,6 +2258,15 @@
         "yallist": "^3.0.2"
       }
     },
+    "node_modules/lucide-react": {
+      "version": "1.47.0",
+      "resolved": "https://registry.npmjs.org/lucide-react/-/lucide-react-1.47.0.tgz",
+      "integrity": "sha512-o8C23aXpNQypRY73W7fW02EyvWJinEMXgKeGjFoKym0zj3Q73hD97A1IQps1g8C14HTGsOpZL0Am+xjfgFZAbg==",
+      "license": "ISC",
+      "peerDependencies": {
+        "react": "^16.5.1 || ^17.0.0 || ^18.0.0 || ^19.0.0"
+      }
+    },
     "node_modules/lz-string": {
       "version": "1.5.0",
       "resolved": "https://registry.npmjs.org/lz-string/-/lz-string-1.5.0.tgz",

admin/package.json

@@ -10,6 +10,7 @@
     "test": "vitest run"
   },
   "dependencies": {
+    "lucide-react": "^1.47.0",
     "react": "^19.2.0",
     "react-dom": "^19.2.0"
   },
@@ -24,4 +25,4 @@
     "vite": "^7.1.5",
     "vitest": "^3.2.4"
   }
-}
+}

admin/src/App.css

@@ -48,17 +48,6 @@
   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;

admin/src/App.test.tsx

@@ -29,9 +29,8 @@ describe("NestQuest Admin shell", () => {
 
     fireEvent.click(screen.getByRole("tab", { name: "History" }));
 
-    expect(screen.getByRole("tabpanel").textContent).toContain(
-      "History placeholder",
-    );
+    expect(screen.getByRole("heading", { name: "History" })).toBeTruthy();
+    expect(screen.getByRole("tabpanel").textContent).not.toContain("placeholder");
     expect(screen.getByRole("tab", { name: "History" }).getAttribute("aria-selected")).toBe(
       "true",
     );

admin/src/App.tsx

@@ -1,6 +1,9 @@
 import { useState } from "react";
 import "./App.css";
+import { TransitionsProvider } from "./api/useTransitions";
 import DefinitionsTab from "./definitions/DefinitionsTab";
+import HistoryTab from "./history/HistoryTab";
+import ScheduleTab from "./schedule/ScheduleTab";
 import TodayTab from "./today/TodayTab";
 
 const TABS = [
@@ -14,47 +17,47 @@ 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" || active === "tasks";
 
   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-${active}`}
-      >
-        {active === "today" ? (
-          <TodayTab />
-        ) : active === "tasks" ? (
-          <DefinitionsTab />
-        ) : (
-          <p className="admin-placeholder">
-            {TABS.find((tab) => tab.id === active)?.label} placeholder — screens
-            arrive in later tasks.
-          </p>
-        )}
-      </main>
-      <nav className="admin-tabbar" aria-label="Admin sections">
-        {TABS.map((tab) => (
-          <button
-            key={tab.id}
-            id={`tab-${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>
+    <TransitionsProvider>
+      <div className="admin-shell">
+        {/* Every tab is a built screen that owns its header (ADMIN-SPEC §1); the
+            generic shell header stays only as a visually hidden page heading. */}
+        <header className="admin-header visually-hidden">
+          <h1 className="admin-title">NestQuest Admin</h1>
+          <p className="admin-subline">Admin console</p>
+        </header>
+        <main
+          className="admin-panel admin-panel--screen"
+          role="tabpanel"
+          aria-labelledby={`tab-${active}`}
+        >
+          {active === "today" ? (
+            <TodayTab />
+          ) : active === "tasks" ? (
+            <DefinitionsTab />
+          ) : active === "schedule" ? (
+            <ScheduleTab />
+          ) : (
+            <HistoryTab />
+          )}
+        </main>
+        <nav className="admin-tabbar" aria-label="Admin sections">
+          {TABS.map((tab) => (
+            <button
+              key={tab.id}
+              id={`tab-${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>
+    </TransitionsProvider>
   );
 }

admin/src/AppRoutes.test.tsx

@@ -1,5 +1,5 @@
 import { afterEach, describe, expect, it, vi } from "vitest";
-import { cleanup, render, screen, waitFor } from "@testing-library/react";
+import { cleanup, fireEvent, render, screen, waitFor } from "@testing-library/react";
 import AppRoutes from "./AppRoutes";
 import { storeTokens } from "./auth/oidc";
 import { config } from "./config";
@@ -32,6 +32,32 @@ describe("AppRoutes auth gating", () => {
     ).toBeTruthy();
   });
 
+  function probeCalls(fetchMock: ReturnType<typeof vi.fn>): string[] {
+    return fetchMock.mock.calls
+      .map(([url]) => String(url))
+      .filter((url) => url.includes("/api/"));
+  }
+
+  it("probes exactly GET /api/v1/admin/ping and no non-admin path", async () => {
+    storeTokens({ access_token: "at-123", expires_in: 600 });
+    const fetchMock = vi.fn().mockResolvedValue(new Response("", { status: 500 }));
+    vi.stubGlobal("fetch", fetchMock);
+
+    render(<AppRoutes />);
+
+    await waitFor(() => {
+      expect(screen.getByTestId("probe-error-screen")).toBeTruthy();
+    });
+    const calls = probeCalls(fetchMock);
+    expect(calls).toEqual([`${config.apiBaseUrl}/api/v1/admin/ping`]);
+    const [, init] = fetchMock.mock.calls[0];
+    expect(init.method ?? "GET").toBe("GET");
+    expect(init.headers.Authorization).toBe("Bearer at-123");
+    for (const url of calls) {
+      expect(new URL(url, "http://localhost").pathname.startsWith("/api/v1/admin/")).toBe(true);
+    }
+  });
+
   it("renders the four-tab shell after a successful authenticated probe", async () => {
     storeTokens({ access_token: "at-123", expires_in: 600 });
     const fetchMock = vi.fn().mockResolvedValue(jsonResponse([]));
@@ -45,6 +71,9 @@ describe("AppRoutes auth gating", () => {
     for (const label of ["Today", "Tasks", "Schedule", "History"]) {
       expect(screen.getByRole("tab", { name: label })).toBeTruthy();
     }
+    expect(String(fetchMock.mock.calls[0][0])).toBe(
+      `${config.apiBaseUrl}/api/v1/admin/ping`,
+    );
   });
 
   it("renders the explicit refusal when the API answers 403", async () => {
@@ -58,6 +87,97 @@ describe("AppRoutes auth gating", () => {
       expect(screen.getByTestId("refusal-screen")).toBeTruthy();
     });
     expect(screen.getByText(/not in the nestquest-admins group/i)).toBeTruthy();
+    expect(screen.queryByRole("tab", { name: "Today" })).toBeNull();
+  });
+
+  it("keeps the login flow when the probe answers 401", async () => {
+    storeTokens({ access_token: "stale", expires_in: 600 });
+    const assign = vi.fn();
+    vi.stubGlobal("location", { ...window.location, assign });
+    const fetchMock = vi.fn().mockImplementation(async (url: string) =>
+      String(url).includes("/api/v1/admin/ping")
+        ? new Response("", { status: 401 })
+        : jsonResponse({
+            issuer: config.issuer,
+            authorization_endpoint: "https://auth.example.com/authorize/",
+            token_endpoint: "https://auth.example.com/token/",
+            userinfo_endpoint: "https://auth.example.com/userinfo/",
+            end_session_endpoint: "https://auth.example.com/end-session/",
+            jwks_uri: "https://auth.example.com/jwks/",
+          }),
+    );
+    vi.stubGlobal("fetch", fetchMock);
+
+    render(<AppRoutes />);
+
+    await waitFor(() => {
+      expect(screen.getByTestId("login-screen")).toBeTruthy();
+    });
+    expect(assign).toHaveBeenCalledTimes(1);
+    const redirect = new URL(assign.mock.calls[0][0] as string);
+    expect(redirect.origin + redirect.pathname).toBe("https://auth.example.com/authorize/");
+    expect(probeCalls(fetchMock)).toEqual([`${config.apiBaseUrl}/api/v1/admin/ping`]);
+    expect(screen.queryByRole("tab", { name: "Today" })).toBeNull();
+    expect(screen.queryByTestId("probe-error-screen")).toBeNull();
+  });
+
+  for (const status of [404, 500]) {
+    it(`shows the error screen, not the shell, when the probe answers ${status}`, async () => {
+      storeTokens({ access_token: "at-123", expires_in: 600 });
+      const fetchMock = vi.fn().mockResolvedValue(new Response("", { status }));
+      vi.stubGlobal("fetch", fetchMock);
+
+      render(<AppRoutes />);
+
+      await waitFor(() => {
+        expect(screen.getByTestId("probe-error-screen")).toBeTruthy();
+      });
+      expect(screen.getByText(new RegExp(`answered ${status}`))).toBeTruthy();
+      expect(screen.getByRole("button", { name: "Retry" })).toBeTruthy();
+      expect(screen.getByRole("button", { name: "Sign out" })).toBeTruthy();
+      expect(screen.queryByRole("tab", { name: "Today" })).toBeNull();
+      expect(screen.queryByTestId("refusal-screen")).toBeNull();
+    });
+  }
+
+  it("shows the error screen, not the shell, when the probe request fails", async () => {
+    storeTokens({ access_token: "at-123", expires_in: 600 });
+    const fetchMock = vi.fn().mockRejectedValue(new TypeError("Failed to fetch"));
+    vi.stubGlobal("fetch", fetchMock);
+
+    render(<AppRoutes />);
+
+    await waitFor(() => {
+      expect(screen.getByTestId("probe-error-screen")).toBeTruthy();
+    });
+    expect(screen.getByText(/could not be reached/i)).toBeTruthy();
+    expect(screen.queryByRole("tab", { name: "Today" })).toBeNull();
+  });
+
+  it("re-probes on retry and enters the shell once the probe succeeds", async () => {
+    storeTokens({ access_token: "at-123", expires_in: 600 });
+    // After the retry the ping succeeds; the shell's own tab loads stay pending.
+    let pings = 0;
+    const fetchMock = vi.fn().mockImplementation((url: string) => {
+      if (!String(url).endsWith("/api/v1/admin/ping")) return new Promise(() => {});
+      pings += 1;
+      return Promise.resolve(new Response("", { status: pings === 1 ? 500 : 200 }));
+    });
+    vi.stubGlobal("fetch", fetchMock);
+
+    render(<AppRoutes />);
+
+    await waitFor(() => {
+      expect(screen.getByTestId("probe-error-screen")).toBeTruthy();
+    });
+    fireEvent.click(screen.getByRole("button", { name: "Retry" }));
+
+    await waitFor(() => {
+      expect(screen.getByRole("tab", { name: "Today" })).toBeTruthy();
+    });
+    expect(String(fetchMock.mock.calls[1][0])).toBe(
+      `${config.apiBaseUrl}/api/v1/admin/ping`,
+    );
   });
 
   it("shows the configuration error screen when the client id is missing", () => {

admin/src/AppRoutes.tsx

@@ -12,7 +12,7 @@ import {
   handleCallback,
   isAuthenticated,
 } from "./auth/oidc";
-import { ApiForbiddenError, apiFetch } from "./api/client";
+import { ApiForbiddenError, ApiUnauthorizedError, apiFetch } from "./api/client";
 import AdminShell from "./App";
 
 type Screen =
@@ -21,18 +21,28 @@ type Screen =
   | { kind: "config-error"; message: string }
   | { kind: "auth-error"; message: string }
   | { kind: "refusal"; message: string }
+  | { kind: "probe-error"; message: string }
   | { kind: "app" };
 
 function currentPath(): string {
   return window.location.pathname.replace(/\/+$/, "") || "/";
 }
 
+const ADMIN_PROBE_PATH = "/api/v1/admin/ping";
+
 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.
+  // The admin plane's authorization probe: only a 2xx enters the shell, so a
+  // non-admin (403) sees the explicit refusal and any other failure an error.
   try {
-    await apiFetch("/api/v1/children", {}, config);
-    setScreen({ kind: "app" });
+    const response = await apiFetch(ADMIN_PROBE_PATH, {}, config);
+    if (response.ok) {
+      setScreen({ kind: "app" });
+      return;
+    }
+    setScreen({
+      kind: "probe-error",
+      message: `The admin API answered ${response.status}. The admin console cannot load.`,
+    });
   } catch (error) {
     if (error instanceof ConfigError) {
       setScreen({ kind: "config-error", message: error.message });
@@ -42,9 +52,15 @@ async function probeApi(setScreen: (screen: Screen) => void) {
       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" });
+    if (error instanceof ApiUnauthorizedError) {
+      // apiFetch has already started the login redirect.
+      setScreen({ kind: "login" });
+      return;
+    }
+    setScreen({
+      kind: "probe-error",
+      message: "The admin API could not be reached. Check your connection and try again.",
+    });
   }
 }
 
@@ -170,6 +186,25 @@ export default function AppRoutes() {
           </button>
         </div>
       );
+    case "probe-error":
+      return (
+        <div className="admin-error" role="alert" data-testid="probe-error-screen">
+          <h1>Admin console unavailable</h1>
+          <p>{screen.message}</p>
+          <button
+            type="button"
+            onClick={() => {
+              setScreen({ kind: "loading" });
+              void probeApi(setScreen);
+            }}
+          >
+            Retry
+          </button>
+          <button type="button" onClick={() => { clearAuth(); window.history.replaceState({}, "", "/"); setScreen({ kind: "login" }); }}>
+            Sign out
+          </button>
+        </div>
+      );
     case "app":
       return <AdminShell />;
   }

admin/src/api/definitions.ts

@@ -103,7 +103,7 @@ function readDetail(body: unknown): string | null {
   return null;
 }
 
-async function readJson<T>(response: Response): Promise<T> {
+export async function readJson<T>(response: Response): Promise<T> {
   if (!response.ok) {
     let body: unknown = null;
     try {

admin/src/api/events.test.ts

@@ -0,0 +1,162 @@
+import { afterEach, beforeEach, describe, expect, it, vi } from "vitest";
+import { waitFor } from "@testing-library/react";
+import { EVENTS_PATH, SseParser, openTransitionStream, type TransitionEvent } from "./events";
+import { frame, testStream, type TestStream } from "./testStream";
+import { storeTokens } from "../auth/oidc";
+
+const COMPLETED = {
+  child_id: 1,
+  child_name: "Declan",
+  instance_id: 12,
+  quest_title: "Make bed",
+  window: "morning",
+  due_date: "2026-09-23",
+  due_time: null,
+  occurred_at: "2026-09-23T11:04:00Z",
+};
+const DAY_COMPLETE = {
+  child_id: 2,
+  child_name: "Maeve",
+  quests_due: 4,
+  quests_completed: 4,
+  occurred_at: "2026-09-23T12:00:00Z",
+};
+
+describe("SseParser", () => {
+  it("yields every frame from one chunk", () => {
+    const parser = new SseParser();
+    const events = parser.push(
+      frame("nestquest_quest_completed", COMPLETED) +
+        frame("nestquest_child_day_complete", DAY_COMPLETE),
+    );
+    expect(events).toEqual([
+      { type: "nestquest_quest_completed", payload: COMPLETED },
+      { type: "nestquest_child_day_complete", payload: DAY_COMPLETE },
+    ]);
+  });
+
+  it("buffers a frame split across two chunks", () => {
+    const parser = new SseParser();
+    const text = frame("nestquest_quest_uncompleted", COMPLETED);
+    const cut = text.indexOf("Make");
+    expect(parser.push(text.slice(0, cut))).toEqual([]);
+    expect(parser.push(text.slice(cut))).toEqual([
+      { type: "nestquest_quest_uncompleted", payload: COMPLETED },
+    ]);
+  });
+
+  it("buffers a split inside the event name and the blank-line terminator", () => {
+    const parser = new SseParser();
+    const text = frame("nestquest_quest_missed", COMPLETED);
+    expect(parser.push(text.slice(0, 12))).toEqual([]);
+    expect(parser.push(text.slice(12, -1))).toEqual([]);
+    expect(parser.push(text.slice(-1))).toEqual([
+      { type: "nestquest_quest_missed", payload: COMPLETED },
+    ]);
+  });
+
+  it("treats a CRLF split across chunks as one line break", () => {
+    const parser = new SseParser();
+    const text = `event: nestquest_quest_completed\r\ndata: ${JSON.stringify(COMPLETED)}\r\n\r\n`;
+    const cut = text.indexOf("\n"); // chunk ends on "\r"
+    expect(parser.push(text.slice(0, cut))).toEqual([]);
+    expect(parser.push(text.slice(cut))).toEqual([
+      { type: "nestquest_quest_completed", payload: COMPLETED },
+    ]);
+  });
+
+  it("drops malformed, unknown and comment frames without throwing", () => {
+    const parser = new SseParser();
+    const events = parser.push(
+      "event: nestquest_quest_completed\ndata: not-json\n\n" +
+        "event: nestquest_quest_completed\ndata: [1,2]\n\n" +
+        "event: something_else\ndata: {}\n\n" +
+        ": keep-alive\n\n" +
+        "data: {}\n\n" +
+        frame("nestquest_quest_completed", COMPLETED),
+    );
+    expect(events).toEqual([{ type: "nestquest_quest_completed", payload: COMPLETED }]);
+  });
+});
+
+describe("openTransitionStream", () => {
+  let fetchMock: ReturnType<typeof vi.fn>;
+  let streams: TestStream[];
+  let stop: (() => void) | null;
+
+  beforeEach(() => {
+    sessionStorage.clear();
+    storeTokens({ access_token: "at-123", expires_in: 600 });
+    streams = [];
+    stop = null;
+    fetchMock = vi.fn(() => {
+      const stream = testStream();
+      streams.push(stream);
+      return Promise.resolve(stream.response);
+    });
+    vi.stubGlobal("fetch", fetchMock);
+  });
+
+  afterEach(() => {
+    stop?.();
+    vi.unstubAllGlobals();
+  });
+
+  it("sends the token in the Authorization header, never in the URL", async () => {
+    stop = openTransitionStream({ onTransition: () => {} });
+    await waitFor(() => expect(fetchMock).toHaveBeenCalledTimes(1));
+    const [url, init] = fetchMock.mock.calls[0];
+    expect(String(url)).toMatch(new RegExp(`${EVENTS_PATH}$`));
+    expect(String(url)).not.toContain("at-123");
+    expect(init.headers.Authorization).toBe("Bearer at-123");
+    expect(init.headers.Accept).toBe("text/event-stream");
+  });
+
+  it("delivers transitions from frames split across chunks", async () => {
+    const seen: TransitionEvent[] = [];
+    stop = openTransitionStream({ onTransition: (event) => seen.push(event) });
+    await waitFor(() => expect(streams).toHaveLength(1));
+    const text = frame("nestquest_quest_completed", COMPLETED);
+    streams[0].push(text.slice(0, 20));
+    streams[0].push(text.slice(20));
+    await waitFor(() =>
+      expect(seen).toEqual([{ type: "nestquest_quest_completed", payload: COMPLETED }]),
+    );
+  });
+
+  it("stop aborts the request and cancels the body", async () => {
+    stop = openTransitionStream({ onTransition: () => {} });
+    await waitFor(() => expect(streams).toHaveLength(1));
+    const signal = fetchMock.mock.calls[0][1].signal as AbortSignal;
+    stop();
+    expect(signal.aborted).toBe(true);
+    await waitFor(() => expect(streams[0].cancelled()).toBe(true));
+  });
+
+  it("reconnects after the stream drops", async () => {
+    const seen: TransitionEvent[] = [];
+    stop = openTransitionStream({ onTransition: (event) => seen.push(event), minDelayMs: 5 });
+    await waitFor(() => expect(streams).toHaveLength(1));
+    streams[0].close();
+    await waitFor(() => expect(streams).toHaveLength(2));
+    streams[1].push(frame("nestquest_quest_missed", COMPLETED));
+    await waitFor(() => expect(seen).toHaveLength(1));
+  });
+
+  it("does not reconnect after stop, even with a reconnect pending", async () => {
+    stop = openTransitionStream({ onTransition: () => {}, minDelayMs: 20 });
+    await waitFor(() => expect(streams).toHaveLength(1));
+    streams[0].close();
+    stop();
+    await new Promise((resolve) => setTimeout(resolve, 60));
+    expect(fetchMock).toHaveBeenCalledTimes(1);
+  });
+
+  it("gives up on a 403 refusal instead of retrying", async () => {
+    fetchMock.mockImplementation(() => Promise.resolve(new Response("", { status: 403 })));
+    stop = openTransitionStream({ onTransition: () => {}, minDelayMs: 5 });
+    await waitFor(() => expect(fetchMock).toHaveBeenCalledTimes(1));
+    await new Promise((resolve) => setTimeout(resolve, 40));
+    expect(fetchMock).toHaveBeenCalledTimes(1);
+  });
+});

admin/src/api/events.ts

@@ -0,0 +1,196 @@
+/**
+ * Live transition stream: GET /api/v1/admin/events (text/event-stream).
+ *
+ * The admin JWT travels in the Authorization header (via apiFetch), so the
+ * stream is read with fetch + a ReadableStream reader — EventSource cannot
+ * set headers, and the token must never go into a URL.
+ */
+import { ApiForbiddenError, ApiUnauthorizedError, apiFetch } from "./client";
+
+export const EVENTS_PATH = "/api/v1/admin/events";
+
+/** The four documented transitions, as the API names them on the wire. */
+export const TRANSITION_TYPES = [
+  "nestquest_quest_completed",
+  "nestquest_quest_uncompleted",
+  "nestquest_quest_missed",
+  "nestquest_child_day_complete",
+] as const;
+
+export type TransitionType = (typeof TRANSITION_TYPES)[number];
+
+/** Quest transitions carry the instance; a day-complete carries the child's counts. */
+export interface QuestTransitionPayload {
+  child_id: number;
+  child_name: string | null;
+  instance_id: number;
+  quest_title: string | null;
+  window: string;
+  due_date: string;
+  due_time: string | null;
+  occurred_at: string;
+}
+
+export interface ChildDayCompletePayload {
+  child_id: number;
+  child_name: string | null;
+  quests_due: number;
+  quests_completed: number;
+  occurred_at: string;
+}
+
+export type TransitionEvent =
+  | {
+      type:
+        | "nestquest_quest_completed"
+        | "nestquest_quest_uncompleted"
+        | "nestquest_quest_missed";
+      payload: QuestTransitionPayload;
+    }
+  | { type: "nestquest_child_day_complete"; payload: ChildDayCompletePayload };
+
+function isTransitionType(value: string): value is TransitionType {
+  return (TRANSITION_TYPES as readonly string[]).includes(value);
+}
+
+/**
+ * Incremental SSE frame parser. Feed it decoded text in whatever chunks the
+ * network delivers; it buffers a partial line or frame until it completes.
+ * Comments (keep-alives), unknown event types and frames whose data is not a
+ * JSON object are dropped, never thrown.
+ */
+export class SseParser {
+  private buffer = "";
+  private eventType = "";
+  private data: string[] = [];
+  /** A chunk ended on "\r": a leading "\n" in the next chunk is the same line break. */
+  private pendingCr = false;
+
+  push(text: string): TransitionEvent[] {
+    if (this.pendingCr && text.startsWith("\n")) text = text.slice(1);
+    this.pendingCr = text.endsWith("\r");
+    this.buffer += text;
+    const lines = this.buffer.split(/\r\n|\r|\n/);
+    this.buffer = lines.pop() ?? "";
+    const events: TransitionEvent[] = [];
+    for (const line of lines) {
+      const event = this.line(line);
+      if (event) events.push(event);
+    }
+    return events;
+  }
+
+  private line(line: string): TransitionEvent | null {
+    if (line === "") return this.dispatch();
+    if (line.startsWith(":")) return null;
+    const colon = line.indexOf(":");
+    const field = colon === -1 ? line : line.slice(0, colon);
+    let value = colon === -1 ? "" : line.slice(colon + 1);
+    if (value.startsWith(" ")) value = value.slice(1);
+    if (field === "event") this.eventType = value;
+    else if (field === "data") this.data.push(value);
+    return null;
+  }
+
+  private dispatch(): TransitionEvent | null {
+    const type = this.eventType;
+    const data = this.data.join("\n");
+    this.eventType = "";
+    this.data = [];
+    if (!isTransitionType(type)) return null;
+    let payload: unknown;
+    try {
+      payload = JSON.parse(data);
+    } catch {
+      return null;
+    }
+    if (!payload || typeof payload !== "object" || Array.isArray(payload)) return null;
+    return { type, payload } as TransitionEvent;
+  }
+}
+
+export interface TransitionStreamOptions {
+  onTransition: (event: TransitionEvent) => void;
+  /** Reconnect delay after a drop: starts at `minDelayMs`, doubles up to `maxDelayMs`. */
+  minDelayMs?: number;
+  maxDelayMs?: number;
+}
+
+function wait(ms: number, signal: AbortSignal): Promise<void> {
+  return new Promise((resolve) => {
+    const timer = setTimeout(done, ms);
+    signal.addEventListener("abort", done, { once: true });
+    function done() {
+      clearTimeout(timer);
+      signal.removeEventListener("abort", done);
+      resolve();
+    }
+  });
+}
+
+/** Read one connection until the body ends (or the signal aborts). */
+async function readOnce(
+  signal: AbortSignal,
+  onTransition: (event: TransitionEvent) => void,
+): Promise<void> {
+  const response = await apiFetch(EVENTS_PATH, {
+    signal,
+    headers: { Accept: "text/event-stream" },
+  });
+  if (!response.ok || !response.body) {
+    throw new Error(`Event stream request failed (HTTP ${response.status}).`);
+  }
+  const reader = response.body.getReader();
+  const decoder = new TextDecoder();
+  const parser = new SseParser();
+  const cancel = () => void reader.cancel().catch(() => {});
+  signal.addEventListener("abort", cancel, { once: true });
+  try {
+    for (;;) {
+      const { value, done } = await reader.read();
+      if (done || signal.aborted) break;
+      for (const event of parser.push(decoder.decode(value, { stream: true }))) {
+        if (signal.aborted) break;
+        onTransition(event);
+      }
+    }
+  } finally {
+    signal.removeEventListener("abort", cancel);
+    reader.releaseLock();
+  }
+}
+
+/**
+ * Subscribe to the admin transition stream, reconnecting with a bounded
+ * backoff after a drop. Returns a stop function that aborts the open request
+ * and any pending reconnect. A 401/403 stops the stream for good: apiFetch
+ * has already started a login (401) or the account is refused (403).
+ */
+export function openTransitionStream({
+  onTransition,
+  minDelayMs = 1_000,
+  maxDelayMs = 30_000,
+}: TransitionStreamOptions): () => void {
+  const controller = new AbortController();
+  const { signal } = controller;
+
+  void (async () => {
+    let delay = minDelayMs;
+    while (!signal.aborted) {
+      try {
+        await readOnce(signal, onTransition);
+        // A connection that was accepted and then ended starts the backoff over.
+        delay = minDelayMs;
+      } catch (error: unknown) {
+        if (signal.aborted) return;
+        if (error instanceof ApiUnauthorizedError || error instanceof ApiForbiddenError) return;
+        // Dropped or refused connection: fall through to the backoff.
+      }
+      if (signal.aborted) return;
+      await wait(delay, signal);
+      delay = Math.min(delay * 2, maxDelayMs);
+    }
+  })();
+
+  return () => controller.abort();
+}

admin/src/api/history.ts

@@ -0,0 +1,85 @@
+/**
+ * Typed client for the admin history route (/api/v1/admin/history): the
+ * append-only event log over a closed due-date range for one filter.
+ */
+import { apiFetch } from "./client";
+import { ApiRequestError, readJson } from "./definitions";
+
+export type HistoryFilter = "all" | "reversals" | "missed";
+
+export type HistoryEventType = "completed" | "uncompleted" | "missed";
+
+export interface HistoryRow {
+  /** UTC ISO stamp; null for a derived missed row (there is no event). */
+  occurred_at: string | null;
+  event_type: HistoryEventType;
+  child_name: string;
+  child_id: number;
+  quest_title: string;
+  instance_id: number;
+  window: string;
+  /** "YYYY-MM-DD", the day the task was owed. */
+  due_date: string;
+  /** Local wall-clock "HH:MM", or null. */
+  due_time: string | null;
+  /** e.g. "panel (Declan)", "joshua (admin)", "nightly sweep". */
+  actor: string;
+  was_on_time: boolean | null;
+}
+
+export interface HistoryResponse {
+  filter: HistoryFilter;
+  start: string;
+  end: string;
+  count: number;
+  rows: HistoryRow[];
+}
+
+export const HISTORY_PATH = "/api/v1/admin/history";
+
+/** `start`/`end` are inclusive "YYYY-MM-DD" due dates. */
+export async function fetchHistory(
+  filter: HistoryFilter,
+  start: string,
+  end: string,
+): Promise<HistoryResponse> {
+  const params = new URLSearchParams({ start, end, filter });
+  return readJson<HistoryResponse>(await apiFetch(`${HISTORY_PATH}?${params.toString()}`));
+}
+
+export const HISTORY_CSV_PATH = "/api/v1/admin/history.csv";
+
+export interface HistoryCsv {
+  blob: Blob;
+  filename: string;
+}
+
+/** The `filename` from a Content-Disposition header, or null. */
+export function csvFilename(disposition: string | null): string | null {
+  const match = disposition?.match(/filename="?([^";]+)"?/i);
+  return match ? match[1].trim() : null;
+}
+
+/**
+ * The CSV export of the same range and filter as `fetchHistory`. Goes through
+ * apiFetch so the admin token travels in the Authorization header.
+ */
+export async function exportHistoryCsv(
+  filter: HistoryFilter,
+  start: string,
+  end: string,
+): Promise<HistoryCsv> {
+  const params = new URLSearchParams({ start, end, filter });
+  const response = await apiFetch(`${HISTORY_CSV_PATH}?${params.toString()}`);
+  if (!response.ok) {
+    // readJson raises ApiRequestError with the API's `detail` for a non-OK response.
+    await readJson<never>(response);
+    throw new ApiRequestError(response.status, null);
+  }
+  return {
+    blob: await response.blob(),
+    filename:
+      csvFilename(response.headers.get("Content-Disposition")) ??
+      `nestquest-history-${start}-to-${end}.csv`,
+  };
+}

admin/src/api/instances.ts

@@ -0,0 +1,23 @@
+/**
+ * Typed client for the admin instance mutation route
+ * (POST /api/v1/admin/instances/{id}/uncomplete).
+ */
+import { apiFetch } from "./client";
+import { readJson } from "./definitions";
+
+export interface UncompleteResult {
+  instance_id: number;
+  /** The derived state after the reversal: "open", or "missed" when past due. */
+  state: string;
+  /** False when the instance was already open (a no-op). */
+  appended: boolean;
+}
+
+export function uncompletePath(instanceId: number): string {
+  return `/api/v1/admin/instances/${instanceId}/uncomplete`;
+}
+
+/** Reverse one completion; raises ApiRequestError with the API's detail on failure. */
+export async function uncompleteInstance(instanceId: number): Promise<UncompleteResult> {
+  return readJson<UncompleteResult>(await apiFetch(uncompletePath(instanceId), { method: "POST" }));
+}

admin/src/api/presence.ts

@@ -0,0 +1,126 @@
+/**
+ * Typed client for the admin presence routes: a child's repeating schedule
+ * (/api/v1/admin/children/{id}/presence-schedule) and the household's
+ * date-range overrides (/api/v1/admin/presence-overrides).
+ */
+import { apiFetch } from "./client";
+import { CHILDREN_PATH, readJson } from "./definitions";
+
+/**
+ * Cycle week index ("0".."n-1", JSON object keys) -> present weekdays
+ * (0 = Monday .. 6 = Sunday). An empty list is away that whole week.
+ */
+export type PresencePattern = Record<string, number[]>;
+
+export interface PresenceScheduleBody {
+  cycle_length_weeks: number;
+  /** "YYYY-MM-DD"; pins cycle week 0. */
+  anchor_date: string;
+  pattern: PresencePattern;
+}
+
+export interface PresenceSchedule extends PresenceScheduleBody {
+  child_id: number;
+}
+
+export interface PresenceOverride {
+  id: number;
+  child_id: number;
+  start_date: string;
+  end_date: string;
+  is_present: boolean;
+  note: string | null;
+}
+
+export interface PresenceOverrideFilter {
+  childId?: number;
+  /** "YYYY-MM-DD"; keeps overrides overlapping [start, end]. */
+  start?: string;
+  end?: string;
+}
+
+export const PRESENCE_OVERRIDES_PATH = "/api/v1/admin/presence-overrides";
+
+export function presenceSchedulePath(childId: number): string {
+  return `${CHILDREN_PATH}/${childId}/presence-schedule`;
+}
+
+/** The child's schedule, or null when it has none (present every day). */
+export async function fetchPresenceSchedule(childId: number): Promise<PresenceSchedule | null> {
+  const body = await readJson<{ schedule: PresenceSchedule | null }>(
+    await apiFetch(presenceSchedulePath(childId)),
+  );
+  return body.schedule;
+}
+
+/** Set (upsert) the child's schedule; resolves to the schedule as stored. */
+export async function savePresenceSchedule(
+  childId: number,
+  body: PresenceScheduleBody,
+): Promise<PresenceSchedule> {
+  return readJson<PresenceSchedule>(
+    await apiFetch(presenceSchedulePath(childId), {
+      method: "PUT",
+      headers: { "Content-Type": "application/json" },
+      body: JSON.stringify(body),
+    }),
+  );
+}
+
+export async function fetchPresenceOverrides(
+  filter: PresenceOverrideFilter = {},
+): Promise<PresenceOverride[]> {
+  const params = new URLSearchParams();
+  if (filter.childId !== undefined) params.set("child_id", String(filter.childId));
+  if (filter.start !== undefined) params.set("start", filter.start);
+  if (filter.end !== undefined) params.set("end", filter.end);
+  const query = params.toString();
+  const body = await readJson<{ overrides: PresenceOverride[] }>(
+    await apiFetch(query ? `${PRESENCE_OVERRIDES_PATH}?${query}` : PRESENCE_OVERRIDES_PATH),
+  );
+  return body.overrides;
+}
+
+export interface PresenceOverrideRange {
+  child_id: number;
+  /** "YYYY-MM-DD", inclusive. */
+  start_date: string;
+  /** "YYYY-MM-DD", inclusive; never before start_date. */
+  end_date: string;
+  is_present: boolean;
+}
+
+export interface PresenceOverrideBody extends PresenceOverrideRange {
+  note?: string;
+}
+
+export const PRESENCE_OVERRIDE_CONSEQUENCE_PATH = `${PRESENCE_OVERRIDES_PATH}/consequence`;
+
+function postJson(path: string, body: unknown): Promise<Response> {
+  return apiFetch(path, {
+    method: "POST",
+    headers: { "Content-Type": "application/json" },
+    body: JSON.stringify(body),
+  });
+}
+
+/**
+ * How many open upcoming tasks saving this override would remove. Computed
+ * by the API before anything is saved; completed instances never count.
+ */
+export async function previewOverrideConsequence(range: PresenceOverrideRange): Promise<number> {
+  const body = await readJson<{ removed: number }>(
+    await postJson(PRESENCE_OVERRIDE_CONSEQUENCE_PATH, range),
+  );
+  return body.removed;
+}
+
+export async function createPresenceOverride(body: PresenceOverrideBody): Promise<PresenceOverride> {
+  return readJson<PresenceOverride>(await postJson(PRESENCE_OVERRIDES_PATH, body));
+}
+
+export async function deletePresenceOverride(overrideId: number): Promise<void> {
+  await readJson<{ status: string }>(
+    await apiFetch(`${PRESENCE_OVERRIDES_PATH}/${overrideId}`, { method: "DELETE" }),
+  );
+}

admin/src/api/testStream.ts

@@ -0,0 +1,39 @@
+/**
+ * Test helper: a controllable text/event-stream Response whose body the test
+ * feeds chunk by chunk (so a frame can be split across chunk boundaries).
+ */
+export interface TestStream {
+  response: Response;
+  push(text: string): void;
+  close(): void;
+  /** True once the reader cancelled the body (the stream was torn down). */
+  cancelled(): boolean;
+}
+
+export function testStream(): TestStream {
+  const encoder = new TextEncoder();
+  let controller!: ReadableStreamDefaultController<Uint8Array>;
+  let cancelled = false;
+  const body = new ReadableStream<Uint8Array>({
+    start(c) {
+      controller = c;
+    },
+    cancel() {
+      cancelled = true;
+    },
+  });
+  return {
+    response: new Response(body, {
+      status: 200,
+      headers: { "Content-Type": "text/event-stream" },
+    }),
+    push: (text) => controller.enqueue(encoder.encode(text)),
+    close: () => controller.close(),
+    cancelled: () => cancelled,
+  };
+}
+
+/** One SSE frame exactly as api/sse.py writes it. */
+export function frame(type: string, payload: unknown): string {
+  return `event: ${type}\ndata: ${JSON.stringify(payload)}\n\n`;
+}

admin/src/api/useTransitions.tsx

@@ -0,0 +1,61 @@
+/**
+ * One live transition stream per signed-in shell, fanned out to the screens.
+ *
+ * <TransitionsProvider> opens the stream on mount and aborts it on unmount;
+ * useTransitions(handler) registers a screen's handler for as long as the
+ * screen is mounted. Without a provider the hook does nothing, so a screen
+ * rendered on its own (e.g. in a test) never opens a stream.
+ */
+import { createContext, useContext, useEffect, useRef, useState, type ReactNode } from "react";
+import { openTransitionStream, type TransitionEvent } from "./events";
+
+type Listener = (event: TransitionEvent) => void;
+
+interface TransitionHub {
+  subscribe(listener: Listener): () => void;
+}
+
+const TransitionsContext = createContext<TransitionHub | null>(null);
+
+export function TransitionsProvider({ children }: { children: ReactNode }) {
+  const [hub] = useState(() => {
+    const listeners = new Set<Listener>();
+    return {
+      listeners,
+      subscribe(listener: Listener) {
+        listeners.add(listener);
+        return () => {
+          listeners.delete(listener);
+        };
+      },
+    };
+  });
+
+  useEffect(
+    () =>
+      openTransitionStream({
+        onTransition: (event) => {
+          for (const listener of [...hub.listeners]) {
+            try {
+              listener(event);
+            } catch {
+              // One screen's handler must not tear down the shared stream.
+            }
+          }
+        },
+      }),
+    [hub],
+  );
+
+  return <TransitionsContext.Provider value={hub}>{children}</TransitionsContext.Provider>;
+}
+
+/** Call `handler` for every transition while the calling component is mounted. */
+export function useTransitions(handler: Listener): void {
+  const hub = useContext(TransitionsContext);
+  const handlerRef = useRef(handler);
+  useEffect(() => {
+    handlerRef.current = handler;
+  });
+  useEffect(() => hub?.subscribe((event) => handlerRef.current(event)), [hub]);
+}

admin/src/definitions/DefinitionsTab.css

@@ -414,6 +414,30 @@
   gap: 6px;
 }
 
+.defs-icon-grid {
+  display: grid;
+  grid-template-columns: repeat(auto-fill, minmax(var(--nq-a-tap-min), 1fr));
+  gap: 6px;
+}
+
+.defs-icon {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  min-height: var(--nq-a-tap-min);
+  border: 1px solid var(--nq-a-border);
+  border-radius: var(--nq-a-density-radius);
+  background: var(--nq-a-surface);
+  color: var(--nq-a-ink);
+  cursor: pointer;
+}
+
+.defs-icon--on {
+  border-color: transparent;
+  background: var(--nq-brand-gradient);
+  color: #fff;
+}
+
 .defs-due-times {
   display: flex;
   flex-direction: column;

admin/src/definitions/DefinitionsTab.test.tsx

@@ -1,6 +1,7 @@
 import { afterEach, beforeEach, describe, expect, it, vi } from "vitest";
 import { act, cleanup, fireEvent, render, screen, waitFor, within } from "@testing-library/react";
 import DefinitionsTab from "./DefinitionsTab";
+import { DEFINITION_ICONS, DefinitionIcon } from "./definitionIcons";
 import type { AdminChild, DefinitionRule, QuestDefinition } from "../api/definitions";
 import { storeTokens } from "../auth/oidc";
 
@@ -134,7 +135,7 @@ function fakeApi(initial: QuestDefinition[]) {
         id: 99,
         title: body.title,
         description: null,
-        icon: null,
+        icon: body.icon ?? null,
         is_active: true,
         skip_on_away: body.skip_on_away,
         rule: body.rule,
@@ -158,6 +159,7 @@ function fakeApi(initial: QuestDefinition[]) {
           ? {
               ...d,
               title: body.title ?? d.title,
+              icon: "icon" in body ? body.icon : d.icon,
               skip_on_away: body.skip_on_away ?? d.skip_on_away,
               rule: body.rule ?? d.rule,
               // Like the API: a sent list replaces the whole set; an absent one keeps it.
@@ -331,6 +333,7 @@ describe("DefinitionsTab", () => {
         path: "/api/v1/admin/quest-definitions",
         body: {
           title: "Feed the cat",
+          icon: null,
           rule: {
             rule_type: "weekly",
             interval: 2,
@@ -419,6 +422,7 @@ describe("DefinitionsTab", () => {
         path: "/api/v1/admin/quest-definitions/11",
         body: {
           title: "Take out the bins",
+          icon: null,
           rule: {
             rule_type: "monthly_day",
             interval: 1,
@@ -436,9 +440,6 @@ describe("DefinitionsTab", () => {
         },
       },
     ]);
-    // The icon is never sent, so it is carried through unchanged.
-    expect(api.writes()[0].body).not.toHaveProperty("icon");
-
     await screen.findByText("Take out the bins");
     expect(api.listFetches()).toBe(2);
     expect(screen.queryByRole("dialog")).toBeNull();
@@ -918,3 +919,169 @@ describe("DefinitionsTab occurrence preview", () => {
     expect(api.previews()).toHaveLength(1);
   });
 });
+
+describe("DefinitionsTab icon picker", () => {
+  beforeEach(() => {
+    sessionStorage.clear();
+    storeTokens({ access_token: "at-123", expires_in: 600 });
+  });
+
+  afterEach(() => {
+    cleanup();
+    vi.unstubAllGlobals();
+    vi.useRealTimers();
+  });
+
+  /** The Lucide name a row renders, or null for the generic fallback glyph. */
+  function rowIcon(row: HTMLElement): string | null {
+    const svg = row.querySelector(".defs-row-glyph svg");
+    expect(svg).not.toBeNull();
+    return svg!.getAttribute("data-icon");
+  }
+
+  function iconRadio(s: HTMLElement, label: string): HTMLElement {
+    return within(within(s).getByRole("radiogroup", { name: "Icon" })).getByRole("radio", {
+      name: label,
+    });
+  }
+
+  it("ships the curated subset, and every entry renders an SVG", () => {
+    expect(DEFINITION_ICONS.map((entry) => entry.name)).toEqual([
+      "bed",
+      "bath",
+      "shower-head",
+      "toilet",
+      "brush",
+      "smile",
+      "shirt",
+      "washing-machine",
+      "utensils",
+      "cooking-pot",
+      "apple",
+      "brush-cleaning",
+      "spray-can",
+      "trash-2",
+      "recycle",
+      "sofa",
+      "house",
+      "backpack",
+      "book-open",
+      "pencil",
+      "music",
+      "dog",
+      "cat",
+      "fish",
+      "sprout",
+      "droplets",
+      "bike",
+      "volleyball",
+      "gamepad-2",
+      "star",
+      "heart",
+      "sun",
+      "moon",
+      "clock",
+      "calendar",
+      "list-checks",
+    ]);
+    expect(DEFINITION_ICONS.length).toBeGreaterThanOrEqual(24);
+    expect(DEFINITION_ICONS.length).toBeLessThanOrEqual(40);
+    for (const { name } of DEFINITION_ICONS) {
+      const { container, unmount } = render(<DefinitionIcon name={name} />);
+      const svg = container.querySelector("svg");
+      expect(svg, name).not.toBeNull();
+      expect(svg!.getAttribute("data-icon")).toBe(name);
+      expect(svg!.querySelectorAll("path, circle, rect, line, polyline, ellipse").length).toBeGreaterThan(0);
+      unmount();
+    }
+  });
+
+  it("a chosen icon is POSTed for a new task and renders on its row", async () => {
+    await renderReady();
+    fireEvent.click(screen.getByRole("button", { name: "New" }));
+    const s = sheet();
+    expect(iconRadio(s, "No icon").getAttribute("aria-checked")).toBe("true");
+
+    fireEvent.change(within(s).getByRole("textbox", { name: "Title" }), {
+      target: { value: "Make the bed" },
+    });
+    fireEvent.click(within(s).getByRole("button", { name: /Assigned children/ }));
+    fireEvent.click(within(s).getByRole("checkbox", { name: "Declan" }));
+    fireEvent.click(within(s).getByRole("button", { name: "Morning" }));
+    fireEvent.click(iconRadio(s, "Bed"));
+    expect(iconRadio(s, "Bed").getAttribute("aria-checked")).toBe("true");
+    expect(iconRadio(s, "Bed").className).toContain("defs-icon--on");
+    expect(iconRadio(s, "No icon").getAttribute("aria-checked")).toBe("false");
+
+    await act(async () => {
+      fireEvent.click(within(s).getByRole("button", { name: "Save changes" }));
+    });
+
+    expect(api.writes()).toHaveLength(1);
+    expect(api.writes()[0].method).toBe("POST");
+    expect((api.writes()[0].body as { icon: string }).icon).toBe("bed");
+    expect(rowIcon(await screen.findByTestId("definition-99"))).toBe("bed");
+  });
+
+  it("a chosen icon is PATCHed for an existing task without breaking the assignee omit", async () => {
+    await renderReady();
+    expect(rowIcon(screen.getByTestId("definition-11"))).toBeNull();
+    fireEvent.click(screen.getByTestId("definition-11"));
+    const s = sheet();
+    expect(iconRadio(s, "No icon").getAttribute("aria-checked")).toBe("true");
+    fireEvent.click(iconRadio(s, "Bins"));
+
+    await act(async () => {
+      fireEvent.click(within(s).getByRole("button", { name: "Save changes" }));
+    });
+
+    expect(screen.queryByTestId("unassign-confirm")).toBeNull();
+    expect(api.writes()).toHaveLength(1);
+    const { method, path, body } = api.writes()[0];
+    expect(method).toBe("PATCH");
+    expect(path).toBe("/api/v1/admin/quest-definitions/11");
+    expect((body as { icon: string }).icon).toBe("trash-2");
+    // Inactive "Old" stays assigned: the unchanged selection is still omitted.
+    expect(body).not.toHaveProperty("assignee_child_ids");
+    await waitFor(() => expect(rowIcon(screen.getByTestId("definition-11"))).toBe("trash-2"));
+  });
+
+  it("an unchanged icon is still sent on edit and shows as selected", async () => {
+    await renderReady();
+    expect(rowIcon(screen.getByTestId("definition-10"))).toBe("smile");
+    fireEvent.click(screen.getByTestId("definition-10"));
+    const s = sheet();
+    expect(iconRadio(s, "Smile").getAttribute("aria-checked")).toBe("true");
+    fireEvent.change(within(s).getByRole("textbox", { name: "Title" }), {
+      target: { value: "Brush teeth well" },
+    });
+
+    await act(async () => {
+      fireEvent.click(within(s).getByRole("button", { name: "Save changes" }));
+    });
+
+    expect((api.writes()[0].body as { icon: string }).icon).toBe("smile");
+  });
+
+  it("an unknown legacy icon falls back to the generic glyph and is kept on save", async () => {
+    const legacy: QuestDefinition = { ...BRUSH, id: 20, icon: "rocket-ship-9000" };
+    await renderReady([legacy]);
+    const row = screen.getByTestId("definition-20");
+    expect(rowIcon(row)).toBeNull();
+
+    fireEvent.click(row);
+    const s = sheet();
+    const group = within(s).getByRole("radiogroup", { name: "Icon" });
+    for (const radio of within(group).getAllByRole("radio")) {
+      expect(radio.getAttribute("aria-checked")).toBe("false");
+    }
+
+    await act(async () => {
+      fireEvent.click(within(s).getByRole("button", { name: "Save changes" }));
+    });
+
+    expect((api.writes()[0].body as { icon: string }).icon).toBe("rocket-ship-9000");
+    await waitFor(() => expect(screen.queryByRole("dialog")).toBeNull());
+    expect(rowIcon(screen.getByTestId("definition-20"))).toBeNull();
+  });
+});

admin/src/definitions/DefinitionsTab.tsx

@@ -1,8 +1,6 @@
 /**
- * Definitions ("Tasks") tab — list + edit sheet (design/ADMIN-SPEC.md §3.1–3.2).
- *
- * The icon picker (§3.3) is a separate task: an existing definition's icon is
- * carried through unchanged by never sending it.
+ * Definitions ("Tasks") tab — list + edit sheet with icon picker
+ * (design/ADMIN-SPEC.md §3.1–3.3).
  */
 import {
   useEffect,
@@ -44,6 +42,7 @@ import {
   PlusGlyph,
   TaskGlyph,
 } from "./glyphs";
+import { DEFINITION_ICONS, DefinitionIcon } from "./definitionIcons";
 import "./DefinitionsTab.css";
 
 /** ADMIN-SPEC §1: every scroll column ends with 92px so content clears the tab bar. */
@@ -78,6 +77,8 @@ const WEEKDAY_LONG = ["Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "S
 
 interface Draft {
   title: string;
+  /** A Lucide name; a legacy value outside the subset is kept until replaced. */
+  icon: string | null;
   assigneeIds: number[];
   repeats: Repeats;
   interval: string;
@@ -117,6 +118,7 @@ function newDraft(activeChildren: AdminChild[]): Draft {
   const today = new Date();
   return {
     title: "",
+    icon: null,
     assigneeIds: activeChildren.length === 1 ? [activeChildren[0].id] : [],
     repeats: "daily",
     interval: "1",
@@ -141,6 +143,7 @@ function draftFrom(definition: QuestDefinition, activeChildren: AdminChild[]): D
   for (const w of definition.windows) dueTimes[w.window] = w.due_time ?? "";
   return {
     title: definition.title,
+    icon: definition.icon,
     // Inactive children cannot be submitted (the API rejects them with 422).
     assigneeIds: definition.assignees.map((a) => a.id).filter((id) => active.has(id)),
     repeats: REPEATS_BY_RULE[rule.rule_type],
@@ -233,6 +236,7 @@ function buildBody(draft: Draft, keepsAssignees = false): DefinitionCreateBody |
   );
   return {
     title,
+    icon: draft.icon,
     rule,
     assignee_child_ids: [...draft.assigneeIds],
     windows,
@@ -319,7 +323,7 @@ function DefinitionRow({
         onClick={onOpen}
       >
         <span className="defs-row-glyph">
-          <TaskGlyph />
+          <DefinitionIcon name={definition.icon} />
         </span>
         <span className="defs-row-text">
           <span className="defs-row-title">{definition.title}</span>
@@ -558,6 +562,35 @@ function EditSheet({
             />
           </Field>
 
+          <Field label="Icon" id="defs-label-icon">
+            <div className="defs-icon-grid" role="radiogroup" aria-labelledby="defs-label-icon">
+              <button
+                type="button"
+                role="radio"
+                aria-checked={draft.icon === null}
+                aria-label="No icon"
+                className={draft.icon === null ? "defs-icon defs-icon--on" : "defs-icon"}
+                onClick={() => update({ icon: null })}
+              >
+                <TaskGlyph size={18} />
+              </button>
+              {DEFINITION_ICONS.map(({ name, label, Icon }) => (
+                <button
+                  key={name}
+                  type="button"
+                  role="radio"
+                  aria-checked={draft.icon === name}
+                  aria-label={label}
+                  data-icon-option={name}
+                  className={draft.icon === name ? "defs-icon defs-icon--on" : "defs-icon"}
+                  onClick={() => update({ icon: name })}
+                >
+                  <Icon size={18} aria-hidden="true" focusable="false" />
+                </button>
+              ))}
+            </div>
+          </Field>
+
           <Field label="Assigned children" id="defs-label-children">
             <button
               type="button"

admin/src/definitions/definitionIcons.tsx

@@ -0,0 +1,103 @@
+/**
+ * The shipped Lucide subset a definition's `icon` may name (ADMIN-SPEC §3.3).
+ * Only these named imports are bundled — no CDN, no runtime fetch. The stored
+ * value is the Lucide kebab-case name, so it stays meaningful to any surface.
+ */
+import {
+  Apple,
+  Backpack,
+  Bath,
+  Bed,
+  Bike,
+  BookOpen,
+  Brush,
+  BrushCleaning,
+  Calendar,
+  Cat,
+  Clock,
+  CookingPot,
+  Dog,
+  Droplets,
+  Fish,
+  Gamepad2,
+  Heart,
+  House,
+  ListChecks,
+  Moon,
+  Music,
+  Pencil,
+  Recycle,
+  Shirt,
+  ShowerHead,
+  Smile,
+  Sofa,
+  SprayCan,
+  Sprout,
+  Star,
+  Sun,
+  Toilet,
+  Trash2,
+  Utensils,
+  Volleyball,
+  WashingMachine,
+  type LucideIcon,
+} from "lucide-react";
+import { TaskGlyph } from "./glyphs";
+
+export interface DefinitionIconEntry {
+  name: string;
+  label: string;
+  Icon: LucideIcon;
+}
+
+export const DEFINITION_ICONS: readonly DefinitionIconEntry[] = [
+  { name: "bed", label: "Bed", Icon: Bed },
+  { name: "bath", label: "Bath", Icon: Bath },
+  { name: "shower-head", label: "Shower", Icon: ShowerHead },
+  { name: "toilet", label: "Toilet", Icon: Toilet },
+  { name: "brush", label: "Brush", Icon: Brush },
+  { name: "smile", label: "Smile", Icon: Smile },
+  { name: "shirt", label: "Clothes", Icon: Shirt },
+  { name: "washing-machine", label: "Laundry", Icon: WashingMachine },
+  { name: "utensils", label: "Meal", Icon: Utensils },
+  { name: "cooking-pot", label: "Cooking", Icon: CookingPot },
+  { name: "apple", label: "Snack", Icon: Apple },
+  { name: "brush-cleaning", label: "Sweep", Icon: BrushCleaning },
+  { name: "spray-can", label: "Clean", Icon: SprayCan },
+  { name: "trash-2", label: "Bins", Icon: Trash2 },
+  { name: "recycle", label: "Recycling", Icon: Recycle },
+  { name: "sofa", label: "Tidy", Icon: Sofa },
+  { name: "house", label: "Home", Icon: House },
+  { name: "backpack", label: "School bag", Icon: Backpack },
+  { name: "book-open", label: "Reading", Icon: BookOpen },
+  { name: "pencil", label: "Homework", Icon: Pencil },
+  { name: "music", label: "Music", Icon: Music },
+  { name: "dog", label: "Dog", Icon: Dog },
+  { name: "cat", label: "Cat", Icon: Cat },
+  { name: "fish", label: "Fish", Icon: Fish },
+  { name: "sprout", label: "Plants", Icon: Sprout },
+  { name: "droplets", label: "Water", Icon: Droplets },
+  { name: "bike", label: "Bike", Icon: Bike },
+  { name: "volleyball", label: "Sport", Icon: Volleyball },
+  { name: "gamepad-2", label: "Games", Icon: Gamepad2 },
+  { name: "star", label: "Star", Icon: Star },
+  { name: "heart", label: "Heart", Icon: Heart },
+  { name: "sun", label: "Morning", Icon: Sun },
+  { name: "moon", label: "Bedtime", Icon: Moon },
+  { name: "clock", label: "Clock", Icon: Clock },
+  { name: "calendar", label: "Calendar", Icon: Calendar },
+  { name: "list-checks", label: "Checklist", Icon: ListChecks },
+];
+
+const BY_NAME = new Map(DEFINITION_ICONS.map((entry) => [entry.name, entry]));
+
+export function findDefinitionIcon(name: string | null): DefinitionIconEntry | null {
+  return name === null ? null : (BY_NAME.get(name) ?? null);
+}
+
+/** A definition's glyph; no icon, or one outside the subset, gets the generic task glyph. */
+export function DefinitionIcon({ name, size = 17 }: { name: string | null; size?: number }) {
+  const entry = findDefinitionIcon(name);
+  if (!entry) return <TaskGlyph size={size} />;
+  return <entry.Icon size={size} aria-hidden="true" focusable="false" data-icon={entry.name} />;
+}

admin/src/history/HistoryTab.css

@@ -0,0 +1,296 @@
+/* History tab — compact density (design/ADMIN-SPEC.md §5). Mobile-first at
+   the 390x844 reference; on wider viewports the column is capped and centred. */
+
+.history-screen {
+  width: 100%;
+  max-width: 640px;
+  margin: 0 auto;
+}
+
+.history-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;
+}
+
+.history-title {
+  margin: 0;
+  font-size: var(--nq-a-size-screen);
+  font-weight: 800;
+  letter-spacing: -0.02em;
+}
+
+.history-sub {
+  margin: 2px 0 0;
+  font-size: 12px;
+  font-weight: 600;
+  color: var(--nq-a-ink-secondary);
+}
+
+.history-csv {
+  flex: none;
+  display: inline-flex;
+  align-items: center;
+  gap: 5px;
+  min-height: 36px;
+  padding: 0 12px;
+  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: 12.5px;
+  font-weight: 700;
+  cursor: pointer;
+}
+
+.history-csv:disabled {
+  cursor: progress;
+  opacity: 0.6;
+}
+
+/* Non-blocking CSV export failure; the tab stays usable. */
+.history-export-error {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 10px;
+  padding: var(--nq-a-density-row-pad);
+  border-radius: var(--nq-a-density-radius);
+  background: var(--nq-a-danger-bg);
+  color: var(--nq-a-danger-strong);
+  font-size: 13px;
+  font-weight: 600;
+}
+
+.history-export-dismiss {
+  flex: none;
+  padding: 4px 8px;
+  border: none;
+  background: none;
+  color: inherit;
+  font-family: inherit;
+  font-size: 12.5px;
+  font-weight: 700;
+  cursor: pointer;
+}
+
+/* Scroll column: 14px 16px, bottom 92px (set inline, ADMIN-SPEC §1). */
+.history-scroll {
+  display: flex;
+  flex-direction: column;
+  gap: var(--nq-a-density-gap);
+  padding: 14px 16px;
+}
+
+.history-card {
+  background: var(--nq-a-surface);
+  border: 1px solid var(--nq-a-border);
+  border-radius: var(--nq-a-density-radius);
+}
+
+/* Stat row */
+.history-stats {
+  display: grid;
+  grid-template-columns: repeat(3, 1fr);
+  gap: 8px;
+}
+
+.history-stat {
+  padding: 12px;
+  background: var(--nq-a-surface);
+  border: 1px solid var(--nq-a-border);
+  border-radius: var(--nq-a-density-radius);
+}
+
+.history-stat-value {
+  font-size: 20px;
+  font-weight: 800;
+  line-height: 1.1;
+}
+
+.history-stat-value--on-time {
+  color: var(--nq-brand-blue);
+}
+
+.history-stat-value--missed {
+  color: var(--nq-a-danger);
+}
+
+.history-stat-label {
+  margin-top: 2px;
+  font-size: 10px;
+  font-weight: 600;
+  text-transform: uppercase;
+  letter-spacing: 0.08em;
+  color: var(--nq-a-ink-secondary);
+}
+
+/* Filter chips */
+.history-chips {
+  display: flex;
+  gap: 6px;
+  overflow-x: auto;
+}
+
+.history-chip {
+  flex: none;
+  min-height: 32px;
+  padding: 0 12px;
+  border: 1px solid var(--nq-a-border);
+  border-radius: var(--nq-a-radius-pill);
+  background: var(--nq-a-surface);
+  color: var(--nq-a-ink);
+  font-family: inherit;
+  font-size: 12px;
+  font-weight: 700;
+  cursor: pointer;
+}
+
+.history-chip--active {
+  border-color: #18181d;
+  background: #18181d;
+  color: #fff;
+}
+
+/* Day-grouped event rows */
+.history-day {
+  display: flex;
+  flex-direction: column;
+  gap: 6px;
+}
+
+.history-section-label {
+  margin: 4px 0 0;
+  font-size: 11px;
+  font-weight: 700;
+  text-transform: uppercase;
+  letter-spacing: 0.08em;
+  color: var(--nq-a-ink-secondary);
+}
+
+.history-list {
+  margin: 0;
+  padding: 0;
+  list-style: none;
+}
+
+.history-list > li + li {
+  border-top: 1px solid var(--nq-a-divider);
+}
+
+.history-event {
+  display: flex;
+  align-items: center;
+  gap: 10px;
+  min-height: var(--nq-a-tap-min);
+  padding: var(--nq-a-density-row-pad);
+}
+
+.history-dot {
+  flex: none;
+  width: 7px;
+  height: 7px;
+  border-radius: 50%;
+}
+
+.history-dot--completed {
+  background: var(--nq-a-success);
+}
+
+.history-dot--uncompleted {
+  background: var(--nq-a-reversal);
+}
+
+.history-dot--missed {
+  background: var(--nq-a-danger);
+}
+
+.history-event-text {
+  flex: 1;
+  min-width: 0;
+}
+
+.history-event-title {
+  font-size: 12.5px;
+  font-weight: 700;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
+.history-event-meta {
+  margin-top: 1px;
+  font-size: 10.5px;
+  font-weight: 600;
+  color: var(--nq-a-ink-secondary);
+}
+
+.history-event-time {
+  flex: none;
+  font-size: 11px;
+  font-weight: 600;
+  color: var(--nq-a-ink-secondary);
+}
+
+.history-empty {
+  padding: var(--nq-a-density-card-pad);
+  font-size: 13px;
+  font-weight: 600;
+  color: var(--nq-a-ink-secondary);
+}
+
+/* Append-only footer strip */
+.history-note {
+  display: flex;
+  align-items: flex-start;
+  gap: 8px;
+  padding: 10px 12px;
+  border: 1px solid var(--nq-a-border);
+  border-radius: var(--nq-a-density-radius);
+  background: var(--nq-a-page);
+  color: var(--nq-a-ink-secondary);
+  font-size: 11.5px;
+  font-weight: 600;
+}
+
+.history-note-glyph {
+  flex: none;
+  display: flex;
+}
+
+/* Loading / error */
+.history-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);
+}
+
+.history-status--error {
+  color: var(--nq-a-danger-strong);
+}
+
+.history-status--error p {
+  margin: 0 0 10px;
+}
+
+.history-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/history/HistoryTab.test.tsx

@@ -0,0 +1,631 @@
+import { afterAll, afterEach, beforeAll, beforeEach, describe, expect, it, vi } from "vitest";
+import { act, cleanup, fireEvent, render, screen, waitFor, within } from "@testing-library/react";
+import HistoryTab, { FOOTER_NOTE, computeStats } from "./HistoryTab";
+import type { HistoryFilter, HistoryRow } from "../api/history";
+import { storeTokens } from "../auth/oidc";
+import { TransitionsProvider } from "../api/useTransitions";
+import { frame, testStream, type TestStream } from "../api/testStream";
+
+const TODAY = "2026-09-23";
+
+function row(overrides: Partial<HistoryRow>): HistoryRow {
+  return {
+    occurred_at: null,
+    event_type: "completed",
+    child_name: "Declan",
+    child_id: 1,
+    quest_title: "Brush teeth",
+    instance_id: 1,
+    window: "morning",
+    due_date: TODAY,
+    due_time: null,
+    actor: "panel (Declan)",
+    was_on_time: true,
+    ...overrides,
+  };
+}
+
+// America/Los_Angeles is UTC-7 in September.
+const BRUSH = row({
+  instance_id: 1,
+  occurred_at: "2026-09-23T14:04:00Z", // 7:04 AM
+  due_time: "07:30",
+});
+const BED_DONE = row({
+  instance_id: 2,
+  quest_title: "Make bed",
+  child_name: "Maeve",
+  child_id: 2,
+  occurred_at: "2026-09-23T14:50:00Z", // 7:50 AM
+  actor: "panel (Maeve)",
+});
+const BED_UNDONE = row({
+  instance_id: 2,
+  event_type: "uncompleted",
+  quest_title: "Make bed",
+  child_name: "Maeve",
+  child_id: 2,
+  occurred_at: "2026-09-23T15:10:00Z", // 8:10 AM
+  actor: "joshua (admin)",
+  was_on_time: null,
+});
+const CAT_LATE = row({
+  instance_id: 3,
+  quest_title: "Feed cat",
+  due_date: "2026-09-22",
+  due_time: "07:00",
+  occurred_at: "2026-09-22T14:22:00Z", // 7:22 AM, 22 min after due
+  was_on_time: false,
+});
+// 7:30 PM local on Sep 22 — already Sep 23 in UTC.
+const HOMEWORK_LATE = row({
+  instance_id: 4,
+  quest_title: "Homework",
+  child_name: "Rory",
+  child_id: 3,
+  due_date: "2026-09-22",
+  due_time: null,
+  occurred_at: "2026-09-23T02:30:00Z",
+  actor: "panel (Rory)",
+  was_on_time: false,
+});
+const PLANTS_MISSED = row({
+  instance_id: 5,
+  event_type: "missed",
+  quest_title: "Water plants",
+  child_name: "Rory",
+  child_id: 3,
+  due_date: "2026-09-21",
+  due_time: "18:00",
+  actor: "nightly sweep",
+  was_on_time: null,
+});
+
+// The API's order: due_date, then instance, then event id.
+const ROWS: Record<HistoryFilter, HistoryRow[]> = {
+  all: [CAT_LATE, HOMEWORK_LATE, BRUSH, BED_DONE, BED_UNDONE],
+  reversals: [BED_UNDONE],
+  missed: [PLANTS_MISSED],
+};
+
+function jsonResponse(body: unknown, status = 200): Response {
+  return new Response(JSON.stringify(body), {
+    status,
+    headers: { "Content-Type": "application/json" },
+  });
+}
+
+const CSV_BODY = "occurred_at,event_type\n2026-09-23T14:04:00Z,completed\n";
+
+function csvResponse(filter: string, start: string, end: string): Response {
+  return new Response(`${filter}\n${CSV_BODY}`, {
+    status: 200,
+    headers: {
+      "Content-Type": "text/csv; charset=utf-8",
+      "Content-Disposition": `attachment; filename="nestquest-history-${start}-to-${end}.csv"`,
+    },
+  });
+}
+
+function routeFetch(url: string): Response {
+  const parsed = new URL(url, "http://x");
+  if (parsed.pathname.endsWith("/api/v1/admin/history.csv")) {
+    return csvResponse(
+      parsed.searchParams.get("filter") ?? "",
+      parsed.searchParams.get("start") ?? "",
+      parsed.searchParams.get("end") ?? "",
+    );
+  }
+  if (!parsed.pathname.endsWith("/api/v1/admin/history")) {
+    return jsonResponse({ detail: "unexpected" }, 500);
+  }
+  const filter = parsed.searchParams.get("filter") as HistoryFilter;
+  const rows = ROWS[filter];
+  return jsonResponse({
+    filter,
+    start: parsed.searchParams.get("start"),
+    end: parsed.searchParams.get("end"),
+    count: rows.length,
+    rows,
+  });
+}
+
+let fetchMock: ReturnType<typeof vi.fn>;
+
+function historyCalls(): URL[] {
+  return fetchMock.mock.calls.map(([url]) => new URL(String(url), "http://x"));
+}
+
+function metas(section: HTMLElement): string[] {
+  return within(section)
+    .getAllByTestId("history-meta")
+    .map((el) => el.textContent ?? "");
+}
+
+async function renderReady() {
+  render(<HistoryTab today={TODAY} />);
+  await screen.findByTestId("stat-on-time");
+}
+
+describe("HistoryTab", () => {
+  beforeAll(() => {
+    vi.stubEnv("TZ", "America/Los_Angeles");
+  });
+
+  afterAll(() => {
+    vi.unstubAllEnvs();
+  });
+
+  beforeEach(() => {
+    sessionStorage.clear();
+    storeTokens({ access_token: "at-123", expires_in: 600 });
+    fetchMock = vi.fn((url: string) => Promise.resolve(routeFetch(url)));
+    vi.stubGlobal("fetch", fetchMock);
+  });
+
+  afterEach(() => {
+    cleanup();
+    vi.unstubAllGlobals();
+  });
+
+  it("renders the header and queries the last 14 days with the Bearer token", async () => {
+    await renderReady();
+    expect(screen.getByRole("heading", { name: "History" })).toBeTruthy();
+    expect(screen.getByText("Append-only event log · last 14 days")).toBeTruthy();
+
+    const calls = historyCalls();
+    expect(calls.length).toBeGreaterThan(0);
+    for (const url of calls) {
+      expect(url.pathname).toBe("/api/v1/admin/history");
+      expect(url.searchParams.get("start")).toBe("2026-09-10");
+      expect(url.searchParams.get("end")).toBe(TODAY);
+    }
+    expect(calls.map((url) => url.searchParams.get("filter")).sort()).toEqual(["all", "missed"]);
+    expect(fetchMock.mock.calls[0][1].headers.Authorization).toBe("Bearer at-123");
+  });
+
+  it("stat row shows On time %, Completed and Missed for the period", async () => {
+    await renderReady();
+    // 4 completions (2 on time) in `all`; 1 derived missed row.
+    expect(screen.getByTestId("stat-on-time").textContent).toBe("50%On time");
+    expect(screen.getByTestId("stat-completed").textContent).toBe("4Completed");
+    expect(screen.getByTestId("stat-missed").textContent).toBe("1Missed");
+  });
+
+  it("On time shows — when the period has no completions", () => {
+    expect(computeStats([BED_UNDONE], [])).toEqual({ onTimePct: null, completed: 0, missed: 0 });
+  });
+
+  it("groups rows by local day, newest first, with event type, actor and on-time meta", async () => {
+    await renderReady();
+
+    const today = screen.getByTestId(`day-${TODAY}`);
+    expect(within(today).getByRole("heading").textContent).toBe("Today");
+    expect(metas(today)).toEqual([
+      "uncompleted · joshua (admin)",
+      "completed · panel (Maeve) · on time",
+      "completed · panel (Declan) · on time",
+    ]);
+    expect(within(today).getAllByText("Make bed · Maeve")).toHaveLength(2);
+    expect(within(today).getByText("8:10 AM")).toBeTruthy();
+
+    // The 7:30 PM completion is Sep 23 in UTC but Sep 22 locally.
+    const yesterday = screen.getByTestId("day-2026-09-22");
+    expect(within(yesterday).getByRole("heading").textContent).toBe("Yesterday");
+    expect(metas(yesterday)).toEqual([
+      "completed · panel (Rory) · late",
+      "completed · panel (Declan) · late 22 min",
+    ]);
+    expect(within(yesterday).getByText("7:30 PM")).toBeTruthy();
+
+    const dots = screen.getAllByTestId("history-dot").map((el) => el.className);
+    expect(dots[0]).toContain("history-dot--uncompleted");
+    expect(dots[1]).toContain("history-dot--completed");
+  });
+
+  it("each filter chip re-queries the API with its filter and re-renders", async () => {
+    await renderReady();
+
+    fireEvent.click(screen.getByRole("button", { name: "Reversals" }));
+    await waitFor(() =>
+      expect(historyCalls().some((url) => url.searchParams.get("filter") === "reversals")).toBe(true),
+    );
+    await waitFor(() => expect(screen.getAllByTestId("history-row")).toHaveLength(1));
+    expect(screen.getByTestId("history-meta").textContent).toBe("uncompleted · joshua (admin)");
+    expect(screen.getByRole("button", { name: "Reversals" }).getAttribute("aria-pressed")).toBe("true");
+
+    fireEvent.click(screen.getByRole("button", { name: "Missed" }));
+    const missedDay = await screen.findByTestId("day-2026-09-21");
+    expect(within(missedDay).getByRole("heading").textContent).toBe("Mon, Sep 21");
+    expect(metas(missedDay)).toEqual(["missed · nightly sweep"]);
+    expect(within(missedDay).getByTestId("history-dot").className).toContain("history-dot--missed");
+    expect(within(missedDay).getByText("6:00 PM")).toBeTruthy();
+    // Stats stay the period's numbers whichever chip is selected.
+    expect(screen.getByTestId("stat-completed").textContent).toBe("4Completed");
+
+    fetchMock.mockClear();
+    fireEvent.click(screen.getByRole("button", { name: "All events" }));
+    await screen.findByTestId(`day-${TODAY}`);
+    expect(historyCalls().map((url) => url.searchParams.get("filter"))).toContain("all");
+    expect(screen.getAllByTestId("history-row")).toHaveLength(5);
+  });
+
+  it("shows the append-only footer", async () => {
+    await renderReady();
+    expect(FOOTER_NOTE).toBe("Events are never edited or deleted. A reversal is its own row.");
+    expect(screen.getByTestId("history-footer").textContent).toBe(FOOTER_NOTE);
+  });
+
+  describe("CSV export", () => {
+    let createObjectURL: ReturnType<typeof vi.fn>;
+    let revokeObjectURL: ReturnType<typeof vi.fn>;
+    let clicked: { href: string; download: string; attached: boolean }[];
+
+    beforeEach(() => {
+      createObjectURL = vi.fn(() => "blob:nestquest/csv-1");
+      revokeObjectURL = vi.fn();
+      // jsdom has no object URLs; install stubs and remove them afterwards.
+      Object.assign(URL, { createObjectURL, revokeObjectURL });
+      clicked = [];
+      vi.spyOn(HTMLAnchorElement.prototype, "click").mockImplementation(function (this: HTMLAnchorElement) {
+        clicked.push({
+          href: this.getAttribute("href") ?? "",
+          download: this.download,
+          attached: document.body.contains(this),
+        });
+      });
+    });
+
+    afterEach(() => {
+      vi.restoreAllMocks();
+      const stubbed = URL as unknown as Record<string, unknown>;
+      delete stubbed.createObjectURL;
+      delete stubbed.revokeObjectURL;
+    });
+
+    function csvCalls(): [URL, RequestInit][] {
+      return fetchMock.mock.calls
+        .map(([url, init]) => [new URL(String(url), "http://x"), init] as [URL, RequestInit])
+        .filter(([url]) => url.pathname === "/api/v1/admin/history.csv");
+    }
+
+    it("requests the CSV for the active filter and displayed range with the Bearer token", async () => {
+      await renderReady();
+      fireEvent.click(screen.getByRole("button", { name: "CSV" }));
+      await waitFor(() => expect(clicked).toHaveLength(1));
+
+      const calls = csvCalls();
+      expect(calls).toHaveLength(1);
+      const [url, init] = calls[0];
+      expect(url.searchParams.get("filter")).toBe("all");
+      expect(url.searchParams.get("start")).toBe("2026-09-10");
+      expect(url.searchParams.get("end")).toBe(TODAY);
+      expect((init.headers as Record<string, string>).Authorization).toBe("Bearer at-123");
+      // The token never travels in the URL.
+      expect(url.toString()).not.toContain("at-123");
+    });
+
+    it("offers the returned CSV for download, then revokes the URL and removes the anchor", async () => {
+      await renderReady();
+      fireEvent.click(screen.getByRole("button", { name: "CSV" }));
+      await waitFor(() => expect(clicked).toHaveLength(1));
+
+      expect(createObjectURL).toHaveBeenCalledTimes(1);
+      const blob = createObjectURL.mock.calls[0][0] as Blob;
+      expect(await blob.text()).toBe(`all\n${CSV_BODY}`);
+      expect(clicked[0]).toEqual({
+        href: "blob:nestquest/csv-1",
+        download: "nestquest-history-2026-09-10-to-2026-09-23.csv",
+        attached: true,
+      });
+      expect(revokeObjectURL).toHaveBeenCalledWith("blob:nestquest/csv-1");
+      expect(document.querySelector("a[download]")).toBeNull();
+      expect(screen.queryByTestId("history-export-error")).toBeNull();
+    });
+
+    it("falls back to the range filename without a Content-Disposition header", async () => {
+      fetchMock.mockImplementation((url: string) =>
+        Promise.resolve(
+          new URL(url, "http://x").pathname.endsWith(".csv")
+            ? new Response(CSV_BODY, { status: 200, headers: { "Content-Type": "text/csv" } })
+            : routeFetch(url),
+        ),
+      );
+      await renderReady();
+      fireEvent.click(screen.getByRole("button", { name: "CSV" }));
+      await waitFor(() => expect(clicked).toHaveLength(1));
+      expect(clicked[0].download).toBe("nestquest-history-2026-09-10-to-2026-09-23.csv");
+    });
+
+    it("switching the filter chip then exporting uses the new filter", async () => {
+      await renderReady();
+      fireEvent.click(screen.getByRole("button", { name: "Reversals" }));
+      await waitFor(() => expect(screen.getAllByTestId("history-row")).toHaveLength(1));
+
+      fireEvent.click(screen.getByRole("button", { name: "CSV" }));
+      await waitFor(() => expect(clicked).toHaveLength(1));
+      const calls = csvCalls();
+      expect(calls).toHaveLength(1);
+      expect(calls[0][0].searchParams.get("filter")).toBe("reversals");
+      expect(calls[0][0].searchParams.get("start")).toBe("2026-09-10");
+      expect(calls[0][0].searchParams.get("end")).toBe(TODAY);
+    });
+
+    it("a failed export shows a non-blocking error and does not download", async () => {
+      fetchMock.mockImplementation((url: string) =>
+        Promise.resolve(
+          new URL(url, "http://x").pathname.endsWith(".csv")
+            ? jsonResponse({ detail: "boom" }, 500)
+            : routeFetch(url),
+        ),
+      );
+      await renderReady();
+      fireEvent.click(screen.getByRole("button", { name: "CSV" }));
+
+      const error = await screen.findByTestId("history-export-error");
+      expect(error.textContent).toContain("The CSV export failed");
+      expect(createObjectURL).not.toHaveBeenCalled();
+      expect(clicked).toHaveLength(0);
+      // The tab stays usable: rows remain, the button is re-enabled, chips still work.
+      expect(screen.getAllByTestId("history-row")).toHaveLength(5);
+      expect((screen.getByRole("button", { name: "CSV" }) as HTMLButtonElement).disabled).toBe(false);
+      fireEvent.click(screen.getByRole("button", { name: "Reversals" }));
+      await waitFor(() => expect(screen.getAllByTestId("history-row")).toHaveLength(1));
+
+      fireEvent.click(within(error).getByRole("button", { name: "Dismiss" }));
+      expect(screen.queryByTestId("history-export-error")).toBeNull();
+    });
+
+    it("the button is disabled while the request is in flight (no double-submit)", async () => {
+      let release: (response: Response) => void = () => {};
+      fetchMock.mockImplementation((url: string) =>
+        new URL(url, "http://x").pathname.endsWith(".csv")
+          ? new Promise<Response>((resolve) => {
+              release = resolve;
+            })
+          : Promise.resolve(routeFetch(url)),
+      );
+      await renderReady();
+      const csv = screen.getByRole("button", { name: "CSV" }) as HTMLButtonElement;
+      fireEvent.click(csv);
+      await waitFor(() => expect(csv.disabled).toBe(true));
+      fireEvent.click(csv);
+      expect(csvCalls()).toHaveLength(1);
+
+      release(csvResponse("all", "2026-09-10", TODAY));
+      await waitFor(() => expect(clicked).toHaveLength(1));
+      await waitFor(() => expect(csv.disabled).toBe(false));
+      expect(csvCalls()).toHaveLength(1);
+    });
+  });
+
+  it("rows are read-only: no row carries a control", async () => {
+    await renderReady();
+    for (const el of screen.getAllByTestId("history-row")) {
+      expect(within(el).queryByRole("button")).toBeNull();
+    }
+  });
+
+  it("a failed fetch shows the error state and Try again reloads", async () => {
+    fetchMock.mockImplementation(() => Promise.resolve(jsonResponse({ detail: "boom" }, 500)));
+    render(<HistoryTab today={TODAY} />);
+
+    const error = await screen.findByTestId("history-error");
+    expect(error.textContent).toContain("The history could not be loaded");
+    expect(screen.getByTestId("history-footer")).toBeTruthy();
+
+    fetchMock.mockImplementation((url: string) => Promise.resolve(routeFetch(url)));
+    fireEvent.click(within(error).getByRole("button", { name: "Try again" }));
+    await screen.findByTestId("stat-on-time");
+    expect(screen.queryByTestId("history-error")).toBeNull();
+  });
+
+  it("the scroll column ends with 92px bottom padding", async () => {
+    await renderReady();
+    expect(screen.getByTestId("history-scroll").style.paddingBottom).toBe("92px");
+  });
+});
+
+describe("HistoryTab live updates", () => {
+  let fetchMock: ReturnType<typeof vi.fn>;
+  let streams: TestStream[];
+
+  function historyRequests(): URL[] {
+    return fetchMock.mock.calls
+      .map(([url]) => new URL(String(url), "http://x"))
+      .filter((url) => url.pathname === "/api/v1/admin/history");
+  }
+
+  const PAYLOAD = {
+    child_id: 2,
+    child_name: "Maeve",
+    instance_id: 2,
+    quest_title: "Make bed",
+    window: "morning",
+    due_date: TODAY,
+    due_time: null,
+    occurred_at: "2026-09-23T15:10:00Z",
+  };
+
+  beforeAll(() => {
+    vi.stubEnv("TZ", "America/Los_Angeles");
+  });
+
+  afterAll(() => {
+    vi.unstubAllEnvs();
+  });
+
+  beforeEach(() => {
+    sessionStorage.clear();
+    storeTokens({ access_token: "at-123", expires_in: 600 });
+    streams = [];
+    fetchMock = vi.fn((url: string) => {
+      if (new URL(url, "http://x").pathname.endsWith("/api/v1/admin/events")) {
+        const stream = testStream();
+        streams.push(stream);
+        return Promise.resolve(stream.response);
+      }
+      return Promise.resolve(routeFetch(url));
+    });
+    vi.stubGlobal("fetch", fetchMock);
+  });
+
+  afterEach(() => {
+    cleanup();
+    vi.unstubAllGlobals();
+  });
+
+  it("a quest transition refetches the active filter; a day-complete does not", async () => {
+    render(
+      <TransitionsProvider>
+        <HistoryTab today={TODAY} />
+      </TransitionsProvider>,
+    );
+    await screen.findByTestId("stat-on-time");
+    fireEvent.click(screen.getByRole("button", { name: "Reversals" }));
+    await waitFor(() =>
+      expect(historyRequests().some((u) => u.searchParams.get("filter") === "reversals")).toBe(true),
+    );
+    await screen.findByTestId("stat-on-time");
+    await waitFor(() => expect(streams).toHaveLength(1));
+    const before = historyRequests().length;
+
+    streams[0].push(
+      frame("nestquest_child_day_complete", {
+        child_id: 2,
+        child_name: "Maeve",
+        quests_due: 4,
+        quests_completed: 4,
+        occurred_at: "2026-09-23T15:00:00Z",
+      }),
+    );
+    await new Promise((resolve) => setTimeout(resolve, 30));
+    expect(historyRequests().length).toBe(before);
+
+    streams[0].push(frame("nestquest_quest_uncompleted", PAYLOAD));
+
+    await waitFor(() => expect(historyRequests().length).toBe(before + 3));
+    const refetched = historyRequests().slice(before);
+    // One refetch (reversals + the two stats queries), same range and filter.
+    expect(refetched.map((u) => u.searchParams.get("filter")).sort()).toEqual([
+      "all",
+      "missed",
+      "reversals",
+    ]);
+    for (const url of refetched) {
+      expect(url.searchParams.get("start")).toBe("2026-09-10");
+      expect(url.searchParams.get("end")).toBe(TODAY);
+    }
+    await new Promise((resolve) => setTimeout(resolve, 30));
+    expect(historyRequests().length).toBe(before + 3);
+    expect(screen.queryByTestId("history-loading")).toBeNull();
+    expect(screen.getByRole("button", { name: "Reversals" }).getAttribute("aria-pressed")).toBe("true");
+    // Rows stay read-only (D-005): no row carries a control.
+    for (const row of screen.getAllByTestId("history-row")) {
+      expect(within(row).queryByRole("button")).toBeNull();
+    }
+  });
+
+  describe("a filter change interleaved with a quest transition", () => {
+    // Both land before the load effect runs, so one load serves both.
+    async function interleave(order: "sse-first" | "chip-first") {
+      await act(async () => {
+        const click = () => fireEvent.click(screen.getByRole("button", { name: "Reversals" }));
+        if (order === "chip-first") click();
+        streams[0].push(frame("nestquest_quest_uncompleted", PAYLOAD));
+        await new Promise((resolve) => setTimeout(resolve, 30));
+        if (order === "sse-first") click();
+      });
+    }
+
+    async function renderLive() {
+      render(
+        <TransitionsProvider>
+          <HistoryTab today={TODAY} />
+        </TransitionsProvider>,
+      );
+      await screen.findByTestId("stat-on-time");
+      await waitFor(() => expect(streams).toHaveLength(1));
+      expect(screen.getAllByTestId("history-row")).toHaveLength(ROWS.all.length);
+    }
+
+    function titles(): string[] {
+      return screen.getAllByTestId("history-row").map((el) => el.textContent ?? "");
+    }
+
+    for (const order of ["sse-first", "chip-first"] as const) {
+      it(`${order}: shows loading, then only the active filter's rows`, async () => {
+        let release!: () => void;
+        const gate = new Promise<void>((resolve) => {
+          release = resolve;
+        });
+        const route = fetchMock.getMockImplementation()!;
+        await renderLive();
+        fetchMock.mockImplementation((url: string) => {
+          const parsed = new URL(url, "http://x");
+          if (parsed.searchParams.get("filter") === "reversals") {
+            return gate.then(() => route(url));
+          }
+          return route(url);
+        });
+
+        await interleave(order);
+        expect(screen.getByRole("button", { name: "Reversals" }).getAttribute("aria-pressed")).toBe("true");
+        // The previous filter's rows never show under the new chip.
+        expect(screen.getByTestId("history-loading")).toBeTruthy();
+        expect(screen.queryAllByTestId("history-row")).toHaveLength(0);
+
+        release();
+        await screen.findByTestId("stat-on-time");
+        expect(titles()).toHaveLength(1);
+        expect(titles()[0]).toContain("Make bed · Maeve");
+        expect(screen.getAllByTestId("history-dot")[0].className).toContain("history-dot--uncompleted");
+      });
+
+      it(`${order}: a failed filter-change load shows the error state, not stale rows`, async () => {
+        const route = fetchMock.getMockImplementation()!;
+        await renderLive();
+        fetchMock.mockImplementation((url: string) => {
+          const parsed = new URL(url, "http://x");
+          if (parsed.pathname === "/api/v1/admin/history") {
+            return Promise.resolve(jsonResponse({ detail: "boom" }, 500));
+          }
+          return route(url);
+        });
+
+        await interleave(order);
+        const error = await screen.findByTestId("history-error");
+        expect(error.textContent).toContain("The history could not be loaded");
+        expect(screen.getByRole("button", { name: "Reversals" }).getAttribute("aria-pressed")).toBe("true");
+        expect(screen.queryAllByTestId("history-row")).toHaveLength(0);
+        expect(screen.queryByTestId("stat-on-time")).toBeNull();
+      });
+    }
+  });
+
+  it("a failed transition refresh keeps the active filter's rows on screen", async () => {
+    render(
+      <TransitionsProvider>
+        <HistoryTab today={TODAY} />
+      </TransitionsProvider>,
+    );
+    await screen.findByTestId("stat-on-time");
+    await waitFor(() => expect(streams).toHaveLength(1));
+    const route = fetchMock.getMockImplementation()!;
+    fetchMock.mockImplementation((url: string) => {
+      if (new URL(url, "http://x").pathname === "/api/v1/admin/history") {
+        return Promise.resolve(jsonResponse({ detail: "boom" }, 500));
+      }
+      return route(url);
+    });
+    const before = historyRequests().length;
+
+    streams[0].push(frame("nestquest_quest_uncompleted", PAYLOAD));
+    // The "all" filter plus the missed stats query.
+    await waitFor(() => expect(historyRequests().length).toBe(before + 2));
+    await new Promise((resolve) => setTimeout(resolve, 30));
+    expect(screen.queryByTestId("history-error")).toBeNull();
+    expect(screen.queryByTestId("history-loading")).toBeNull();
+    expect(screen.getAllByTestId("history-row")).toHaveLength(ROWS.all.length);
+  });
+});

admin/src/history/HistoryTab.tsx

@@ -0,0 +1,300 @@
+/**
+ * History tab — the append-only event log (design/ADMIN-SPEC.md §5).
+ *
+ * Rows are read-only: events are never edited or deleted, and a reversal is
+ * its own row (D-005).
+ */
+import { useEffect, useRef, useState } from "react";
+import { ApiForbiddenError } from "../api/client";
+import type { TransitionEvent } from "../api/events";
+import { useTransitions } from "../api/useTransitions";
+import { exportHistoryCsv, fetchHistory, type HistoryFilter, type HistoryRow } from "../api/history";
+import { localTodayIso } from "../schedule/cycle";
+import { dayLabel, groupByDay, rowMeta, rowTime, shiftIso } from "./format";
+import { DownloadGlyph, LockGlyph } from "./glyphs";
+import "./HistoryTab.css";
+
+/** ADMIN-SPEC §1: every scroll column ends with 92px so content clears the tab bar. */
+export const SCROLL_BOTTOM_PADDING = "92px";
+
+export const RANGE_DAYS = 14;
+
+export const FOOTER_NOTE = "Events are never edited or deleted. A reversal is its own row.";
+
+export const FILTERS: { id: HistoryFilter; label: string }[] = [
+  { id: "all", label: "All events" },
+  { id: "reversals", label: "Reversals" },
+  { id: "missed", label: "Missed" },
+];
+
+export interface HistoryStats {
+  /** Whole percent, or null when the period has no completions. */
+  onTimePct: number | null;
+  completed: number;
+  missed: number;
+}
+
+/** Per-period stats from the `all` rows (completions) and the `missed` rows. */
+export function computeStats(allRows: HistoryRow[], missedRows: HistoryRow[]): HistoryStats {
+  const completions = allRows.filter((row) => row.event_type === "completed");
+  const onTime = completions.filter((row) => row.was_on_time === true).length;
+  return {
+    onTimePct: completions.length > 0 ? Math.round((onTime / completions.length) * 100) : null,
+    completed: completions.length,
+    missed: missedRows.filter((row) => row.event_type === "missed").length,
+  };
+}
+
+interface Loaded {
+  rows: HistoryRow[];
+  stats: HistoryStats;
+}
+
+type LoadState =
+  | { kind: "loading" }
+  | { kind: "error"; message: string }
+  /** `key` is the (filter, start, end) the rows were loaded for. */
+  | { kind: "ready"; data: Loaded; key: string };
+
+/**
+ * The selected filter's rows plus the period stats. Stats always come from
+ * the `all` and `missed` queries, whichever chip is selected, so switching
+ * chips never changes the period's numbers.
+ */
+async function loadHistory(filter: HistoryFilter, start: string, end: string): Promise<Loaded> {
+  const [selected, all, missed] = await Promise.all([
+    fetchHistory(filter, start, end),
+    filter === "all" ? null : fetchHistory("all", start, end),
+    filter === "missed" ? null : fetchHistory("missed", start, end),
+  ]);
+  return {
+    rows: selected.rows,
+    stats: computeStats((all ?? selected).rows, (missed ?? selected).rows),
+  };
+}
+
+/** Offer a Blob as a file download without navigating the page. */
+export function offerDownload(blob: Blob, filename: string): void {
+  const url = URL.createObjectURL(blob);
+  const anchor = document.createElement("a");
+  anchor.href = url;
+  anchor.download = filename;
+  anchor.style.display = "none";
+  document.body.appendChild(anchor);
+  try {
+    anchor.click();
+  } finally {
+    anchor.remove();
+    URL.revokeObjectURL(url);
+  }
+}
+
+function ScreenHeader({ exporting, onExport }: { exporting: boolean; onExport: () => void }) {
+  return (
+    <header className="history-header">
+      <div>
+        <h2 className="history-title">History</h2>
+        <p className="history-sub">Append-only event log · last {RANGE_DAYS} days</p>
+      </div>
+      <button
+        type="button"
+        className="history-csv"
+        data-testid="history-csv"
+        disabled={exporting}
+        aria-busy={exporting}
+        onClick={onExport}
+      >
+        <DownloadGlyph />
+        CSV
+      </button>
+    </header>
+  );
+}
+
+function StatRow({ stats }: { stats: HistoryStats }) {
+  const items = [
+    { key: "on-time", label: "On time", value: stats.onTimePct === null ? "—" : `${stats.onTimePct}%` },
+    { key: "completed", label: "Completed", value: String(stats.completed) },
+    { key: "missed", label: "Missed", value: String(stats.missed) },
+  ];
+  return (
+    <div className="history-stats">
+      {items.map((item) => (
+        <div key={item.key} className="history-stat" data-testid={`stat-${item.key}`}>
+          <div className={`history-stat-value history-stat-value--${item.key}`}>{item.value}</div>
+          <div className="history-stat-label">{item.label}</div>
+        </div>
+      ))}
+    </div>
+  );
+}
+
+function EventRow({ row }: { row: HistoryRow }) {
+  return (
+    <li className="history-event" data-testid="history-row">
+      <span
+        className={`history-dot history-dot--${row.event_type}`}
+        data-testid="history-dot"
+        aria-hidden="true"
+      />
+      <div className="history-event-text">
+        <div className="history-event-title">
+          {row.quest_title} · {row.child_name}
+        </div>
+        <div className="history-event-meta" data-testid="history-meta">
+          {rowMeta(row)}
+        </div>
+      </div>
+      <span className="history-event-time">{rowTime(row)}</span>
+    </li>
+  );
+}
+
+function FooterNote() {
+  return (
+    <div className="history-note" data-testid="history-footer">
+      <span className="history-note-glyph">
+        <LockGlyph />
+      </span>
+      <span>{FOOTER_NOTE}</span>
+    </div>
+  );
+}
+
+export default function HistoryTab({ today = localTodayIso() }: { today?: string }) {
+  const [filter, setFilter] = useState<HistoryFilter>("all");
+  const [state, setState] = useState<LoadState>({ kind: "loading" });
+  const [attempt, setAttempt] = useState(0);
+  const [exporting, setExporting] = useState(false);
+  const [exportError, setExportError] = useState<string | null>(null);
+  const exportingRef = useRef(false);
+  const start = shiftIso(today, -(RANGE_DAYS - 1));
+  const key = `${filter}|${start}|${today}`;
+
+  // A quest transition is a new history row (or changes a derived missed row);
+  // a day-complete adds none. The refetch keeps the active filter and range.
+  useTransitions((event: TransitionEvent) => {
+    if (event.type === "nestquest_child_day_complete") return;
+    setAttempt((n) => n + 1);
+  });
+
+  /** Download the CSV for the active filter over the displayed range. */
+  async function exportCsv() {
+    if (exportingRef.current) return;
+    exportingRef.current = true;
+    setExporting(true);
+    setExportError(null);
+    try {
+      const { blob, filename } = await exportHistoryCsv(filter, start, today);
+      offerDownload(blob, filename);
+    } catch (error: unknown) {
+      setExportError(
+        error instanceof ApiForbiddenError
+          ? error.message
+          : "The CSV export failed. Check your connection and try again.",
+      );
+    } finally {
+      exportingRef.current = false;
+      setExporting(false);
+    }
+  }
+
+  useEffect(() => {
+    let cancelled = false;
+    // Rows already loaded for this (filter, range) stay on screen while they
+    // refresh; any other rows give way to the loading state.
+    const isCurrent = (prev: LoadState) => prev.kind === "ready" && prev.key === key;
+    setState((prev) => (isCurrent(prev) ? prev : { kind: "loading" }));
+    loadHistory(filter, start, today)
+      .then((data) => {
+        if (!cancelled) setState({ kind: "ready", data, key });
+      })
+      .catch((error: unknown) => {
+        if (cancelled) return;
+        const message =
+          error instanceof ApiForbiddenError
+            ? error.message
+            : "The history could not be loaded. Check your connection and try again.";
+        // A failed refresh keeps the rows already on screen.
+        setState((prev) => (isCurrent(prev) ? prev : { kind: "error", message }));
+      });
+    return () => {
+      cancelled = true;
+    };
+  }, [filter, start, today, key, attempt]);
+
+  // Never render one filter's rows under another's chip, even for the render
+  // before the load effect runs.
+  const shown: LoadState = state.kind === "ready" && state.key !== key ? { kind: "loading" } : state;
+
+  let body;
+  if (shown.kind === "loading") {
+    body = (
+      <div className="history-status" role="status" data-testid="history-loading">
+        Loading history…
+      </div>
+    );
+  } else if (shown.kind === "error") {
+    body = (
+      <div className="history-status history-status--error" role="alert" data-testid="history-error">
+        <p>{shown.message}</p>
+        <button type="button" className="history-retry" onClick={() => setAttempt((n) => n + 1)}>
+          Try again
+        </button>
+      </div>
+    );
+  } else {
+    const groups = groupByDay(shown.data.rows);
+    body =
+      groups.length > 0 ? (
+        groups.map((group) => (
+          <section key={group.day} className="history-day" data-testid={`day-${group.day}`}>
+            <h3 className="history-section-label">{dayLabel(group.day, today)}</h3>
+            <ul className="history-card history-list">
+              {group.rows.map((row, index) => (
+                <EventRow key={`${row.instance_id}-${row.event_type}-${row.occurred_at ?? ""}-${index}`} row={row} />
+              ))}
+            </ul>
+          </section>
+        ))
+      ) : (
+        <div className="history-card history-empty">No events in the last {RANGE_DAYS} days.</div>
+      );
+  }
+
+  return (
+    <div className="history-screen">
+      <ScreenHeader exporting={exporting} onExport={() => void exportCsv()} />
+      <div
+        className="history-scroll"
+        data-testid="history-scroll"
+        style={{ paddingBottom: SCROLL_BOTTOM_PADDING }}
+      >
+        {exportError !== null ? (
+          <div className="history-export-error" role="alert" data-testid="history-export-error">
+            <span>{exportError}</span>
+            <button type="button" className="history-export-dismiss" onClick={() => setExportError(null)}>
+              Dismiss
+            </button>
+          </div>
+        ) : null}
+        {shown.kind === "ready" ? <StatRow stats={shown.data.stats} /> : null}
+        <div className="history-chips" role="group" aria-label="Filter events">
+          {FILTERS.map((item) => (
+            <button
+              key={item.id}
+              type="button"
+              className={item.id === filter ? "history-chip history-chip--active" : "history-chip"}
+              aria-pressed={item.id === filter}
+              onClick={() => setFilter(item.id)}
+            >
+              {item.label}
+            </button>
+          ))}
+        </div>
+        {body}
+        <FooterNote />
+      </div>
+    </div>
+  );
+}

admin/src/history/format.ts

@@ -0,0 +1,94 @@
+/**
+ * Day grouping and row wording for the History tab.
+ *
+ * Calendar dates ("YYYY-MM-DD") are handled by their components (never
+ * `new Date("YYYY-MM-DD")`, which is UTC midnight and reads as the previous
+ * day in negative-offset zones); event stamps are UTC and shown in the
+ * viewer's local time.
+ */
+import type { HistoryRow } from "../api/history";
+import { dayNumber, isoFromDayNumber, localTodayIso } from "../schedule/cycle";
+import { shortDate } from "../schedule/format";
+import { formatClockTime, formatDueTime } from "../today/format";
+
+const MS_PER_MINUTE = 60_000;
+
+/** `iso` shifted by `days` calendar days. */
+export function shiftIso(iso: string, days: number): string {
+  return isoFromDayNumber(dayNumber(iso) + days);
+}
+
+/** The local calendar day an event belongs to (due_date for missed rows). */
+export function rowDay(row: HistoryRow): string {
+  return row.occurred_at ? localTodayIso(new Date(row.occurred_at)) : row.due_date;
+}
+
+/** The row's due moment as local wall-clock time, or null without a due time. */
+function dueMoment(row: HistoryRow): Date | null {
+  const match = /^(\d{2}):(\d{2})/.exec(row.due_time ?? "");
+  if (!match) return null;
+  const [year, month, day] = row.due_date.split("-").map(Number);
+  return new Date(year, month - 1, day, Number(match[1]), Number(match[2]));
+}
+
+/** Newest first; a missed row sorts at its due moment (or the end of its day). */
+function sortKey(row: HistoryRow): number {
+  if (row.occurred_at) return Date.parse(row.occurred_at);
+  const due = dueMoment(row);
+  if (due) return due.getTime();
+  const [year, month, day] = row.due_date.split("-").map(Number);
+  return new Date(year, month - 1, day, 23, 59).getTime();
+}
+
+export interface DayGroup {
+  day: string;
+  rows: HistoryRow[];
+}
+
+/** Rows grouped by day, newest day first and newest row first within a day. */
+export function groupByDay(rows: HistoryRow[]): DayGroup[] {
+  const groups = new Map<string, HistoryRow[]>();
+  for (const row of rows) {
+    const day = rowDay(row);
+    groups.set(day, [...(groups.get(day) ?? []), row]);
+  }
+  return [...groups.entries()]
+    .sort(([a], [b]) => b.localeCompare(a))
+    .map(([day, dayRows]) => ({
+      day,
+      // Stable sort: rows at the same moment keep the API's append order.
+      rows: [...dayRows].sort((a, b) => sortKey(b) - sortKey(a)),
+    }));
+}
+
+/** "Today", "Yesterday", else "Mon, Sep 21" (the CSS uppercases it). */
+export function dayLabel(day: string, today: string): string {
+  if (day === today) return "Today";
+  if (day === shiftIso(today, -1)) return "Yesterday";
+  const weekday = new Intl.DateTimeFormat("en-US", { weekday: "short", timeZone: "UTC" }).format(
+    new Date(dayNumber(day) * 86_400_000),
+  );
+  return `${weekday}, ${shortDate(day)}`;
+}
+
+/** "on time", "late 22 min", or "late" when the lateness is not derivable. */
+function onTimeFlag(row: HistoryRow): string | null {
+  if (row.event_type !== "completed" || row.was_on_time === null) return null;
+  if (row.was_on_time) return "on time";
+  const due = dueMoment(row);
+  if (!due || !row.occurred_at) return "late";
+  const minutes = Math.round((Date.parse(row.occurred_at) - due.getTime()) / MS_PER_MINUTE);
+  return minutes > 0 ? `late ${minutes} min` : "late";
+}
+
+/** `<event type> · <actor>` plus the on-time flag for completions. */
+export function rowMeta(row: HistoryRow): string {
+  const flag = onTimeFlag(row);
+  return [row.event_type, row.actor, flag].filter(Boolean).join(" · ");
+}
+
+/** The event's local clock time; a missed row shows its due time, if any. */
+export function rowTime(row: HistoryRow): string {
+  if (row.occurred_at) return formatClockTime(row.occurred_at);
+  return row.due_time ? formatDueTime(row.due_time) : "";
+}

admin/src/history/glyphs.tsx

@@ -0,0 +1,41 @@
+/**
+ * Inline stroke glyphs for the History tab (Lucide-style 24px grid),
+ * CDN-free like the other tabs' glyphs.
+ */
+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 DownloadGlyph({ size = 15 }: { size?: number }) {
+  return (
+    <Glyph size={size}>
+      <path d="M21 15v4a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2v-4M7 10l5 5 5-5M12 15V3" />
+    </Glyph>
+  );
+}
+
+export function LockGlyph({ size = 15 }: { size?: number }) {
+  return (
+    <Glyph size={size}>
+      <rect x="3" y="11" width="18" height="11" rx="2" />
+      <path d="M7 11V7a5 5 0 0 1 10 0v4" />
+    </Glyph>
+  );
+}

admin/src/index.css

@@ -23,9 +23,14 @@
   --nq-a-danger: #dc2626;
   --nq-a-danger-strong: #b91c1c;
   --nq-a-danger-bg: #fee2e2;
+  --nq-a-warning-ink: #92400e;
+  --nq-a-warning-ink-2: #78350f;
+  --nq-a-warning-bg: #fef3c7;
+  --nq-a-warning-border: rgba(217, 119, 6, 0.35);
   --nq-a-info-bg: #dbeafe;
   --nq-a-info-ink: #1e3a8a;
   --nq-a-info-icon: #1d4ed8;
+  --nq-a-reversal: #7d28a0;
 
   --nq-a-font: Nunito, system-ui, sans-serif;
   --nq-a-size-screen: 24px;

admin/src/schedule/OverrideEditor.css

@@ -0,0 +1,220 @@
+/* Presence override editor — roomy density pushed screen
+   (design/ADMIN-SPEC.md §6). Covers the tab bar like a pushed route. */
+
+.override-screen {
+  position: fixed;
+  inset: 0;
+  z-index: 30;
+  overflow-y: auto;
+  background: var(--nq-a-page);
+}
+
+.override-header {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  padding: 14px 16px;
+  background: var(--nq-a-surface);
+  border-bottom: 1px solid var(--nq-a-border);
+}
+
+.override-back {
+  flex: none;
+  display: grid;
+  place-items: center;
+  width: var(--nq-a-tap-min);
+  height: var(--nq-a-tap-min);
+  margin: -6px 0 -6px -12px;
+  padding: 0;
+  border: 0;
+  background: none;
+  color: var(--nq-a-ink);
+  cursor: pointer;
+}
+
+.override-title {
+  margin: 0;
+  font-size: var(--nq-a-size-screen);
+  font-weight: 800;
+  letter-spacing: -0.02em;
+}
+
+.override-sub {
+  margin: 2px 0 0;
+  font-size: 12px;
+  font-weight: 600;
+  color: var(--nq-a-ink-secondary);
+}
+
+.override-scroll {
+  display: flex;
+  flex-direction: column;
+  gap: 16px;
+  width: 100%;
+  max-width: 640px;
+  margin: 0 auto;
+  padding: 16px 16px 24px;
+}
+
+/* Form card: roomy density, 18px padding, 16px gaps. */
+.override-card {
+  display: flex;
+  flex-direction: column;
+  gap: 16px;
+  padding: 18px;
+  background: var(--nq-a-surface);
+  border: 1px solid var(--nq-a-border);
+  border-radius: 12px;
+}
+
+.override-field {
+  display: flex;
+  flex-direction: column;
+  gap: 6px;
+  min-width: 0;
+}
+
+.override-label {
+  font-size: var(--nq-a-size-label);
+  font-weight: 700;
+  text-transform: uppercase;
+  letter-spacing: var(--nq-a-track-label);
+  color: var(--nq-a-ink-secondary);
+}
+
+.override-segments {
+  display: grid;
+  gap: 6px;
+}
+
+.override-segments--3 {
+  grid-template-columns: repeat(3, 1fr);
+}
+
+.override-segments--2 {
+  grid-template-columns: repeat(2, 1fr);
+}
+
+.override-segment {
+  min-height: var(--nq-a-tap-min);
+  padding: 0 8px;
+  border: 1px solid var(--nq-a-border);
+  border-radius: 10px;
+  background: var(--nq-a-surface);
+  color: var(--nq-a-ink-secondary);
+  font-family: inherit;
+  font-size: 13.5px;
+  font-weight: 700;
+  cursor: pointer;
+}
+
+.override-segment--gradient[aria-pressed="true"] {
+  border-color: transparent;
+  background: var(--nq-brand-gradient);
+  color: #fff;
+}
+
+.override-segment--ink[aria-pressed="true"] {
+  border-color: #18181d;
+  background: #18181d;
+  color: #fff;
+}
+
+.override-dates {
+  display: grid;
+  grid-template-columns: 1fr 1fr;
+  gap: 10px;
+}
+
+.override-input {
+  width: 100%;
+  min-height: var(--nq-a-tap-min);
+  padding: 13px;
+  border: 1px solid var(--nq-a-border);
+  border-radius: 10px;
+  background: var(--nq-a-surface);
+  color: var(--nq-a-ink);
+  font-family: inherit;
+  font-size: 14px;
+  font-weight: 600;
+}
+
+.override-date {
+  font-weight: 700;
+}
+
+/* Consequence warning */
+.override-warning {
+  display: flex;
+  gap: 10px;
+  padding: 14px;
+  border: 1px solid var(--nq-a-warning-border);
+  border-radius: 12px;
+  background: var(--nq-a-warning-bg);
+}
+
+.override-warning-glyph {
+  flex: none;
+  display: flex;
+  color: var(--nq-a-warning-ink);
+}
+
+.override-warning-headline {
+  margin: 0;
+  font-size: 13.5px;
+  font-weight: 700;
+  color: var(--nq-a-warning-ink);
+}
+
+.override-warning-body {
+  margin: 3px 0 0;
+  font-size: 12px;
+  font-weight: 600;
+  color: var(--nq-a-warning-ink-2);
+}
+
+.override-error {
+  margin: 0;
+  padding: 10px 12px;
+  border-radius: var(--nq-a-density-radius);
+  background: var(--nq-a-danger-bg);
+  color: var(--nq-a-danger-strong);
+  font-size: 12.5px;
+  font-weight: 700;
+}
+
+/* Footer: Cancel (flex 1) + Save override (flex 2), 15px vertical padding. */
+.override-footer {
+  display: flex;
+  gap: 10px;
+}
+
+.override-cancel,
+.override-save {
+  padding: 15px 12px;
+  border-radius: 12px;
+  font-family: inherit;
+  font-size: 14px;
+  font-weight: 700;
+  cursor: pointer;
+}
+
+.override-cancel {
+  flex: 1;
+  border: 1px solid var(--nq-a-border);
+  background: var(--nq-a-surface);
+  color: var(--nq-a-ink);
+}
+
+.override-save {
+  flex: 2;
+  border: 0;
+  background: var(--nq-brand-gradient);
+  color: #fff;
+}
+
+.override-cancel:disabled,
+.override-save:disabled {
+  opacity: 0.45;
+  cursor: default;
+}

admin/src/schedule/OverrideEditor.test.tsx

@@ -0,0 +1,533 @@
+import { afterEach, beforeEach, describe, expect, it, vi } from "vitest";
+import { cleanup, fireEvent, render, screen, waitFor, within } from "@testing-library/react";
+import App from "../App";
+import ScheduleTab from "./ScheduleTab";
+import { CONSEQUENCE_DEBOUNCE_MS, isIsoDate, isValidRange } from "./OverrideEditor";
+import type { AdminChild } from "../api/definitions";
+import type { PresenceOverride, PresenceSchedule } from "../api/presence";
+import { storeTokens } from "../auth/oidc";
+
+function child(id: number, display_name: string, sort_order: number): AdminChild {
+  return { id, display_name, colour: null, avatar_ref: null, sort_order, is_active: true };
+}
+
+const CHILDREN = [child(1, "Declan", 1), child(2, "Maeve", 2), child(3, "Rory", 3)];
+
+const DECLAN: PresenceSchedule = {
+  child_id: 1,
+  cycle_length_weeks: 2,
+  anchor_date: "2026-09-07",
+  pattern: { "0": [0, 1, 2, 3, 4, 5, 6], "1": [5, 6] },
+};
+
+const INITIAL_OVERRIDES: PresenceOverride[] = [
+  { id: 41, child_id: 1, start_date: "2026-09-10", end_date: "2026-09-12", is_present: false, note: "Dentist trip" },
+];
+
+const TODAY = "2026-09-23";
+const OVERRIDES_PATH = "/api/v1/admin/presence-overrides";
+const CONSEQUENCE_PATH = `${OVERRIDES_PATH}/consequence`;
+
+function jsonResponse(body: unknown, status = 200): Response {
+  return new Response(JSON.stringify(body), {
+    status,
+    headers: { "Content-Type": "application/json" },
+  });
+}
+
+interface Call {
+  method: string;
+  path: string;
+  body: unknown;
+}
+
+let overrides: PresenceOverride[];
+let consequence: (body: Record<string, unknown>) => Response | Promise<Response>;
+let createResponse: (body: Record<string, unknown>) => Response;
+let fetchMock: ReturnType<typeof vi.fn>;
+
+function calls(): Call[] {
+  return fetchMock.mock.calls.map(([url, init]: [string, RequestInit | undefined]) => ({
+    method: init?.method ?? "GET",
+    path: new URL(String(url), "http://x").pathname,
+    body: init?.body ? JSON.parse(String(init.body)) : undefined,
+  }));
+}
+
+function consequenceBodies(): unknown[] {
+  return calls()
+    .filter((c) => c.path === CONSEQUENCE_PATH)
+    .map((c) => c.body);
+}
+
+async function routeFetch(url: string, init: RequestInit = {}): Promise<Response> {
+  const path = new URL(url, "http://x").pathname;
+  const method = init.method ?? "GET";
+  const body = init.body ? JSON.parse(String(init.body)) : undefined;
+  if (path === CONSEQUENCE_PATH && method === "POST") return consequence(body);
+  if (path === OVERRIDES_PATH && method === "POST") return createResponse(body);
+  const deleteMatch = /\/presence-overrides\/(\d+)$/.exec(path);
+  if (deleteMatch && method === "DELETE") {
+    overrides = overrides.filter((o) => o.id !== Number(deleteMatch[1]));
+    return jsonResponse({ status: "ok" });
+  }
+  if (path.endsWith("/admin/children")) return jsonResponse({ children: CHILDREN });
+  const scheduleMatch = /\/children\/(\d+)\/presence-schedule$/.exec(path);
+  if (scheduleMatch) {
+    return jsonResponse({ schedule: Number(scheduleMatch[1]) === 1 ? DECLAN : null });
+  }
+  if (path === OVERRIDES_PATH) return jsonResponse({ overrides });
+  return jsonResponse({ detail: "unexpected" }, 500);
+}
+
+function deferred() {
+  let resolve!: (response: Response) => void;
+  const promise = new Promise<Response>((r) => {
+    resolve = r;
+  });
+  return { promise, resolve };
+}
+
+const pastDebounce = () => new Promise((r) => setTimeout(r, CONSEQUENCE_DEBOUNCE_MS + 150));
+
+function headline(): string {
+  return screen.getByTestId("override-consequence-headline").textContent ?? "";
+}
+
+function warningBody(): string {
+  return screen.getByTestId("override-consequence").querySelector(".override-warning-body")?.textContent ?? "";
+}
+
+function saveButton(): HTMLButtonElement {
+  return screen.getByRole("button", { name: "Save override" }) as HTMLButtonElement;
+}
+
+function setDate(label: "From" | "Through", value: string) {
+  fireEvent.change(screen.getByLabelText(label), { target: { value } });
+}
+
+async function openEditor() {
+  render(<ScheduleTab today={TODAY} />);
+  await screen.findByTestId("pattern-1");
+  fireEvent.click(screen.getByRole("button", { name: "Add" }));
+  await screen.findByRole("heading", { name: "Presence override" });
+}
+
+describe("OverrideEditor", () => {
+  beforeEach(() => {
+    sessionStorage.clear();
+    storeTokens({ access_token: "at-123", expires_in: 600 });
+    overrides = [...INITIAL_OVERRIDES];
+    consequence = () => jsonResponse({ removed: 4 });
+    createResponse = (body) => {
+      const created: PresenceOverride = {
+        id: 50,
+        child_id: body.child_id as number,
+        start_date: body.start_date as string,
+        end_date: body.end_date as string,
+        is_present: body.is_present as boolean,
+        note: (body.note as string | undefined) ?? null,
+      };
+      overrides = [...overrides, created];
+      return jsonResponse(created, 201);
+    };
+    fetchMock = vi.fn(async (url: string, init?: RequestInit) => routeFetch(url, init));
+    vi.stubGlobal("fetch", fetchMock);
+  });
+
+  afterEach(() => {
+    cleanup();
+    vi.unstubAllGlobals();
+  });
+
+  it("renders the pushed screen per ADMIN-SPEC §6", async () => {
+    await openEditor();
+    expect(screen.getByText("Beats the custody pattern for these dates")).toBeTruthy();
+    expect(screen.getByRole("button", { name: "Back" })).toBeTruthy();
+    const kids = within(screen.getByRole("group", { name: "Child" })).getAllByRole("button");
+    expect(kids.map((b) => [b.textContent, b.getAttribute("aria-pressed")])).toEqual([
+      ["Declan", "true"],
+      ["Maeve", "false"],
+      ["Rory", "false"],
+    ]);
+    const status = within(screen.getByRole("group", { name: "Status for these dates" }));
+    expect(status.getByRole("button", { name: "Away" }).getAttribute("aria-pressed")).toBe("true");
+    expect(status.getByRole("button", { name: "Home" }).getAttribute("aria-pressed")).toBe("false");
+    expect((screen.getByLabelText("From") as HTMLInputElement).value).toBe(TODAY);
+    expect((screen.getByLabelText("Through") as HTMLInputElement).value).toBe(TODAY);
+    expect(screen.getByLabelText("Reason (optional)")).toBeTruthy();
+    expect(screen.getByRole("button", { name: "Cancel" })).toBeTruthy();
+  });
+
+  it("shows the live consequence count from the API and recounts on every change", async () => {
+    await openEditor();
+    // Save is off until the count is on screen: the warning precedes saving.
+    expect(saveButton().disabled).toBe(true);
+    await waitFor(() => expect(headline()).toBe("This removes 4 upcoming tasks"));
+    expect(consequenceBodies()).toEqual([
+      { child_id: 1, start_date: TODAY, end_date: TODAY, is_present: false },
+    ]);
+    expect(warningBody()).toBe(
+      "Declan's open tasks Sep 23 are removed while away. Completed days are untouched.",
+    );
+    expect(saveButton().disabled).toBe(false);
+
+    consequence = () => jsonResponse({ removed: 9 });
+    setDate("Through", "2026-09-27");
+    await waitFor(() => expect(headline()).toBe("This removes 9 upcoming tasks"));
+    expect(consequenceBodies()[1]).toEqual({
+      child_id: 1,
+      start_date: TODAY,
+      end_date: "2026-09-27",
+      is_present: false,
+    });
+    expect(warningBody()).toBe(
+      "Declan's open tasks Sep 23 – 27 are removed while away. Completed days are untouched.",
+    );
+
+    consequence = () => jsonResponse({ removed: 2 });
+    fireEvent.click(screen.getByRole("button", { name: "Maeve" }));
+    await waitFor(() => expect(headline()).toBe("This removes 2 upcoming tasks"));
+    expect(consequenceBodies()[2]).toEqual({
+      child_id: 2,
+      start_date: TODAY,
+      end_date: "2026-09-27",
+      is_present: false,
+    });
+    expect(warningBody()).toBe(
+      "Maeve's open tasks Sep 23 – 27 are removed while away. Completed days are untouched.",
+    );
+
+    // A Home override removes nothing by definition: no request, count 0.
+    fireEvent.click(screen.getByRole("button", { name: "Home" }));
+    expect(headline()).toBe("This removes 0 upcoming tasks");
+    expect(warningBody()).toBe(
+      "Maeve is home Sep 23 – 27, so no tasks are removed. Completed days are untouched.",
+    );
+    await pastDebounce();
+    expect(consequenceBodies()).toHaveLength(3);
+  });
+
+  it("renders the API's count verbatim — completed instances are excluded server-side", async () => {
+    // The range holds 3 open instances and 1 already completed. The API
+    // excludes the completed one (D-005; proven by
+    // tests/test_api_admin_presence_consequence.py::test_completed_instance_in_range_is_not_counted
+    // and ::test_count_matches_a_direct_materialise_comparison), so it answers 3,
+    // and the editor shows exactly that — it never counts days on its own.
+    consequence = () => jsonResponse({ removed: 3 });
+    await openEditor();
+    setDate("Through", "2026-09-25");
+    await waitFor(() => expect(headline()).toBe("This removes 3 upcoming tasks"));
+    expect(warningBody()).toBe(
+      "Declan's open tasks Sep 23 – 25 are removed while away. Completed days are untouched.",
+    );
+  });
+
+  it("a stale consequence response never overwrites a newer one", async () => {
+    const first = deferred();
+    const second = deferred();
+    const pending = [first, second];
+    consequence = () => pending.shift()!.promise;
+    await openEditor();
+    await waitFor(() => expect(consequenceBodies()).toHaveLength(1));
+
+    setDate("Through", "2026-09-26");
+    await waitFor(() => expect(consequenceBodies()).toHaveLength(2));
+
+    second.resolve(jsonResponse({ removed: 5 }));
+    await waitFor(() => expect(headline()).toBe("This removes 5 upcoming tasks"));
+    first.resolve(jsonResponse({ removed: 99 }));
+    await pastDebounce();
+    expect(headline()).toBe("This removes 5 upcoming tasks");
+  });
+
+  it("debounces rapid edits into one request for the final range", async () => {
+    await openEditor();
+    await waitFor(() => expect(consequenceBodies()).toHaveLength(1));
+    setDate("Through", "2026-09-24");
+    setDate("Through", "2026-09-25");
+    setDate("Through", "2026-09-26");
+    await pastDebounce();
+    expect(consequenceBodies().slice(1)).toEqual([
+      { child_id: 1, start_date: TODAY, end_date: "2026-09-26", is_present: false },
+    ]);
+  });
+
+  it("an incomplete or reversed range sends no consequence request and cannot be saved", async () => {
+    await openEditor();
+    await waitFor(() => expect(consequenceBodies()).toHaveLength(1));
+
+    setDate("Through", "");
+    expect(headline()).toBe("Choose a valid date range");
+    expect(saveButton().disabled).toBe(true);
+    await pastDebounce();
+    expect(consequenceBodies()).toHaveLength(1);
+
+    setDate("Through", "2026-09-20"); // before From
+    expect(headline()).toBe("Choose a valid date range");
+    await pastDebounce();
+    expect(consequenceBodies()).toHaveLength(1);
+    fireEvent.click(saveButton());
+    expect(calls().some((c) => c.method === "POST" && c.path === OVERRIDES_PATH)).toBe(false);
+  });
+
+  it("a malformed From date sends no consequence request and cannot be saved", async () => {
+    await openEditor();
+    await waitFor(() => expect(consequenceBodies()).toHaveLength(1));
+
+    setDate("From", "2026-02-30");
+    expect(headline()).toBe("Choose a valid date range");
+    expect(saveButton().disabled).toBe(true);
+    await pastDebounce();
+    expect(consequenceBodies()).toHaveLength(1);
+    fireEvent.click(saveButton());
+    expect(calls().some((c) => c.method === "POST" && c.path === OVERRIDES_PATH)).toBe(false);
+  });
+
+  it("Save sends the exact POST body, closes the editor and shows the new row", async () => {
+    await openEditor();
+    setDate("From", "2026-09-24");
+    setDate("Through", "2026-09-26");
+    fireEvent.change(screen.getByLabelText("Reason (optional)"), {
+      target: { value: "  Trip with grandparents " },
+    });
+    await waitFor(() => expect(saveButton().disabled).toBe(false));
+    const before = calls().length;
+    const schedulesBefore = calls().filter((c) => c.path.endsWith("/presence-schedule")).length;
+
+    fireEvent.click(saveButton());
+    const row = await screen.findByTestId("override-50");
+    expect(row.textContent).toContain("Declan away · Sep 24 – 26");
+    expect(row.textContent).toContain("Trip with grandparents");
+    expect(screen.queryByRole("heading", { name: "Presence override" })).toBeNull();
+
+    const after = calls().slice(before);
+    const writes = after.filter((c) => c.method !== "GET");
+    // D-005: saving sends ONLY the create request — never a delete of an
+    // instance or an override. The API's regenerate path keeps completed
+    // instances (tests/test_materialize.py::
+    // test_regenerate_for_definition_rebuilds_horizon_and_preserves_completed).
+    expect(writes).toEqual([
+      {
+        method: "POST",
+        path: OVERRIDES_PATH,
+        body: {
+          child_id: 1,
+          start_date: "2026-09-24",
+          end_date: "2026-09-26",
+          is_present: false,
+          note: "Trip with grandparents",
+        },
+      },
+    ]);
+    expect(after.some((c) => c.method === "DELETE")).toBe(false);
+    // The overrides and the presence schedules are refetched for the grid.
+    expect(after.some((c) => c.method === "GET" && c.path === OVERRIDES_PATH)).toBe(true);
+    expect(calls().filter((c) => c.path.endsWith("/presence-schedule")).length).toBeGreaterThan(
+      schedulesBefore,
+    );
+    // The grid reflects the new override.
+    expect(document.querySelector('[data-date="2026-09-25"]')?.getAttribute("data-state")).toBe(
+      "override-away",
+    );
+  });
+
+  it("omits an empty reason and saves a Home override", async () => {
+    await openEditor();
+    fireEvent.click(screen.getByRole("button", { name: "Home" }));
+    await waitFor(() => expect(saveButton().disabled).toBe(false));
+    fireEvent.click(saveButton());
+    await screen.findByTestId("override-50");
+    const post = calls().find((c) => c.method === "POST" && c.path === OVERRIDES_PATH);
+    expect(post?.body).toEqual({
+      child_id: 1,
+      start_date: TODAY,
+      end_date: TODAY,
+      is_present: true,
+    });
+  });
+
+  it("a 422 shows the API detail and keeps the form", async () => {
+    createResponse = () => jsonResponse({ detail: "overlaps an existing override" }, 422);
+    await openEditor();
+    setDate("Through", "2026-09-25");
+    fireEvent.change(screen.getByLabelText("Reason (optional)"), { target: { value: "Camp" } });
+    await waitFor(() => expect(saveButton().disabled).toBe(false));
+
+    fireEvent.click(saveButton());
+    const alert = await screen.findByTestId("override-error");
+    expect(alert.textContent).toBe("overlaps an existing override");
+    expect(screen.getByRole("heading", { name: "Presence override" })).toBeTruthy();
+    expect((screen.getByLabelText("Through") as HTMLInputElement).value).toBe("2026-09-25");
+    expect((screen.getByLabelText("Reason (optional)") as HTMLInputElement).value).toBe("Camp");
+    expect(saveButton().disabled).toBe(false);
+  });
+
+  it("Cancel and Back close the editor without writing", async () => {
+    await openEditor();
+    fireEvent.click(screen.getByRole("button", { name: "Cancel" }));
+    await screen.findByTestId("pattern-1");
+    fireEvent.click(screen.getByRole("button", { name: "Add" }));
+    fireEvent.click(await screen.findByRole("button", { name: "Back" }));
+    await screen.findByTestId("pattern-1");
+    expect(calls().some((c) => c.method === "POST" && c.path === OVERRIDES_PATH)).toBe(false);
+  });
+
+  it("Add opens the editor for the selected child", async () => {
+    render(<ScheduleTab today={TODAY} />);
+    await screen.findByTestId("pattern-1");
+    fireEvent.click(screen.getByRole("button", { name: "Maeve" }));
+    fireEvent.click(screen.getByRole("button", { name: "Add" }));
+    const kids = within(await screen.findByRole("group", { name: "Child" }));
+    expect(kids.getByRole("button", { name: "Maeve" }).getAttribute("aria-pressed")).toBe("true");
+    await waitFor(() =>
+      expect(consequenceBodies()).toEqual([
+        { child_id: 2, start_date: TODAY, end_date: TODAY, is_present: false },
+      ]),
+    );
+  });
+
+  it("the trash button deletes the override only after confirm", async () => {
+    render(<ScheduleTab today={TODAY} />);
+    const row = await screen.findByTestId("override-41");
+
+    fireEvent.click(within(row).getByRole("button", { name: "Delete override" }));
+    fireEvent.click(within(row).getByRole("button", { name: "Keep" }));
+    expect(calls().some((c) => c.method === "DELETE")).toBe(false);
+
+    fireEvent.click(within(row).getByRole("button", { name: "Delete override" }));
+    const confirm = within(row).getByRole("group", { name: "Confirm delete" });
+    fireEvent.click(within(confirm).getByRole("button", { name: "Delete" }));
+    await waitFor(() => expect(screen.queryByTestId("override-41")).toBeNull());
+    expect(calls().filter((c) => c.method === "DELETE")).toEqual([
+      { method: "DELETE", path: `${OVERRIDES_PATH}/41`, body: undefined },
+    ]);
+    expect(screen.getByText("No overrides for Declan.")).toBeTruthy();
+  });
+});
+
+describe("OverrideEditor focus", () => {
+  beforeEach(() => {
+    sessionStorage.clear();
+    storeTokens({ access_token: "at-123", expires_in: 600 });
+    overrides = [...INITIAL_OVERRIDES];
+    consequence = () => jsonResponse({ removed: 4 });
+    createResponse = (body) => {
+      const created = { id: 50, note: null, ...body } as PresenceOverride;
+      overrides = [...overrides, created];
+      return jsonResponse(created, 201);
+    };
+    fetchMock = vi.fn(async (url: string, init?: RequestInit) => routeFetch(url, init));
+    vi.stubGlobal("fetch", fetchMock);
+  });
+
+  afterEach(() => {
+    cleanup();
+    vi.unstubAllGlobals();
+  });
+
+  function dialog(): HTMLElement {
+    return screen.getByRole("dialog", { name: "Presence override" });
+  }
+
+  function addButton(): HTMLElement {
+    return screen.getByRole("button", { name: "Add" });
+  }
+
+  it("moves focus into the editor on open", async () => {
+    await openEditor();
+    expect(document.activeElement).toBe(screen.getByRole("heading", { name: "Presence override" }));
+    expect(dialog().contains(document.activeElement)).toBe(true);
+  });
+
+  it("keeps Tab and Shift+Tab inside the editor", async () => {
+    await openEditor();
+    await waitFor(() => expect(saveButton().disabled).toBe(false));
+    const back = screen.getByRole("button", { name: "Back" });
+
+    saveButton().focus();
+    fireEvent.keyDown(saveButton(), { key: "Tab" });
+    expect(document.activeElement).toBe(back);
+
+    fireEvent.keyDown(back, { key: "Tab", shiftKey: true });
+    expect(document.activeElement).toBe(saveButton());
+
+    // From the focused heading (not in the tab order) Shift+Tab wraps to the end.
+    const title = screen.getByRole("heading", { name: "Presence override" });
+    title.focus();
+    fireEvent.keyDown(title, { key: "Tab", shiftKey: true });
+    expect(document.activeElement).toBe(saveButton());
+  });
+
+  it("makes the tab bar inert while open and restores it on close", async () => {
+    render(<App />);
+    fireEvent.click(screen.getByRole("tab", { name: "Schedule" }));
+    await screen.findByTestId("pattern-1");
+    fireEvent.click(addButton());
+    await screen.findByRole("heading", { name: "Presence override" });
+
+    const tabbar = document.querySelector(".admin-tabbar") as HTMLElement;
+    expect(tabbar.hasAttribute("inert")).toBe(true);
+    expect(tabbar.getAttribute("aria-hidden")).toBe("true");
+    expect(dialog().closest("[inert]")).toBeNull();
+
+    fireEvent.keyDown(dialog(), { key: "Escape" });
+    await screen.findByTestId("pattern-1");
+    expect(tabbar.hasAttribute("inert")).toBe(false);
+    expect(tabbar.hasAttribute("aria-hidden")).toBe(false);
+  });
+
+  it("Escape cancels without writing and returns focus to Add", async () => {
+    await openEditor();
+    fireEvent.keyDown(document.activeElement as HTMLElement, { key: "Escape" });
+    await screen.findByTestId("pattern-1");
+    expect(screen.queryByRole("dialog")).toBeNull();
+    expect(document.activeElement).toBe(addButton());
+    expect(calls().some((c) => c.method === "POST" && c.path === OVERRIDES_PATH)).toBe(false);
+  });
+
+  it("Escape does nothing while saving; focus returns to Add after the save", async () => {
+    const gate = deferred();
+    fetchMock.mockImplementation(async (url: string, init?: RequestInit) => {
+      const path = new URL(url, "http://x").pathname;
+      if (path === OVERRIDES_PATH && init?.method === "POST") await gate.promise;
+      return routeFetch(url, init);
+    });
+    await openEditor();
+    await waitFor(() => expect(saveButton().disabled).toBe(false));
+    fireEvent.click(saveButton());
+    expect(screen.getByRole("button", { name: "Saving…" })).toBeTruthy();
+
+    fireEvent.keyDown(dialog(), { key: "Escape" });
+    expect(screen.getByRole("dialog")).toBeTruthy();
+
+    gate.resolve(new Response(null));
+    await screen.findByTestId("override-50");
+    expect(screen.queryByRole("dialog")).toBeNull();
+    expect(document.activeElement).toBe(addButton());
+  });
+
+  it("Back and Cancel return focus to Add", async () => {
+    await openEditor();
+    fireEvent.click(screen.getByRole("button", { name: "Back" }));
+    await screen.findByTestId("pattern-1");
+    expect(document.activeElement).toBe(addButton());
+
+    fireEvent.click(addButton());
+    fireEvent.click(await screen.findByRole("button", { name: "Cancel" }));
+    await screen.findByTestId("pattern-1");
+    expect(document.activeElement).toBe(addButton());
+  });
+});
+
+describe("range validation", () => {
+  it("accepts only strict ISO calendar dates in order", () => {
+    expect(isIsoDate("2026-09-23")).toBe(true);
+    expect(isIsoDate("2026-02-30")).toBe(false);
+    expect(isIsoDate("2026-9-3")).toBe(false);
+    expect(isIsoDate("")).toBe(false);
+    expect(isValidRange("2026-09-23", "2026-09-23")).toBe(true);
+    expect(isValidRange("2026-09-23", "2026-09-22")).toBe(false);
+    expect(isValidRange("2026-09-23", "")).toBe(false);
+  });
+});

admin/src/schedule/OverrideEditor.tsx

@@ -0,0 +1,348 @@
+/**
+ * Presence override editor — the pushed screen of design/ADMIN-SPEC.md §6.
+ *
+ * The consequence warning is counted by the API (POST
+ * /presence-overrides/consequence) before anything is saved; Save stays off
+ * until that count is on screen. Saving only ever sends the create request:
+ * the API never removes an instance that already has a completion event (D-005).
+ */
+import { useEffect, useRef, useState, type KeyboardEvent as ReactKeyboardEvent } from "react";
+import { ApiForbiddenError } from "../api/client";
+import { ApiRequestError, type AdminChild } from "../api/definitions";
+import {
+  createPresenceOverride,
+  previewOverrideConsequence,
+  type PresenceOverride,
+  type PresenceOverrideBody,
+} from "../api/presence";
+import { dayNumber, isoFromDayNumber } from "./cycle";
+import { dateRange } from "./format";
+import { AlertCircleGlyph, ChevronLeftGlyph } from "./glyphs";
+import "./OverrideEditor.css";
+
+/** How long the form must sit still before the consequence is recounted. */
+export const CONSEQUENCE_DEBOUNCE_MS = 300;
+
+/** Strict "YYYY-MM-DD" naming a real calendar day (no 2026-02-30). */
+export function isIsoDate(value: string): boolean {
+  if (!/^\d{4}-\d{2}-\d{2}$/.test(value)) return false;
+  return isoFromDayNumber(dayNumber(value)) === value;
+}
+
+export function isValidRange(start: string, end: string): boolean {
+  return isIsoDate(start) && isIsoDate(end) && start <= end;
+}
+
+type Consequence =
+  | { kind: "invalid" }
+  | { kind: "counting" }
+  | { kind: "ready"; removed: number }
+  | { kind: "error"; message: string };
+
+function errorMessage(error: unknown, fallback: string): string {
+  if (error instanceof ApiForbiddenError) return error.message;
+  if (error instanceof ApiRequestError && error.detail) return error.detail;
+  return fallback;
+}
+
+const FOCUSABLE =
+  'button:not([disabled]), input:not([disabled]), select:not([disabled]), textarea:not([disabled]), [href], [tabindex]:not([tabindex="-1"])';
+
+/**
+ * Make everything outside `root` inert (siblings of each ancestor up to
+ * <body>), so the tab bar behind the pushed screen cannot take focus.
+ * Returns the undo.
+ */
+function inertOutside(root: HTMLElement): () => void {
+  const made: HTMLElement[] = [];
+  for (let node: HTMLElement = root; node.parentElement && node !== document.body; node = node.parentElement) {
+    for (const sibling of Array.from(node.parentElement.children)) {
+      if (sibling === node || !(sibling instanceof HTMLElement) || sibling.hasAttribute("inert")) continue;
+      sibling.setAttribute("inert", "");
+      sibling.setAttribute("aria-hidden", "true");
+      made.push(sibling);
+    }
+  }
+  return () => {
+    for (const el of made) {
+      el.removeAttribute("inert");
+      el.removeAttribute("aria-hidden");
+    }
+  };
+}
+
+function tasksPhrase(count: number): string {
+  return `${count} upcoming ${count === 1 ? "task" : "tasks"}`;
+}
+
+export interface OverrideEditorProps {
+  /** Active children, in display order. */
+  childOptions: AdminChild[];
+  initialChildId: number;
+  /** "YYYY-MM-DD"; the date fields start here. */
+  today: string;
+  onCancel: () => void;
+  onSaved: (override: PresenceOverride) => void;
+}
+
+export default function OverrideEditor({
+  childOptions,
+  initialChildId,
+  today,
+  onCancel,
+  onSaved,
+}: OverrideEditorProps) {
+  const [childId, setChildId] = useState(initialChildId);
+  const [isPresent, setIsPresent] = useState(false);
+  const [startDate, setStartDate] = useState(today);
+  const [endDate, setEndDate] = useState(today);
+  const [note, setNote] = useState("");
+  const [consequence, setConsequence] = useState<Consequence>({ kind: "counting" });
+  const [saving, setSaving] = useState(false);
+  const [error, setError] = useState<string | null>(null);
+  // Every form change bumps the sequence; only the latest request may render.
+  const requestSeq = useRef(0);
+  const screenRef = useRef<HTMLDivElement>(null);
+  const titleRef = useRef<HTMLHeadingElement>(null);
+
+  // Modal focus: move in on open and keep the background out of reach. The
+  // opener hands focus back to its Add control once this screen closes.
+  useEffect(() => {
+    titleRef.current?.focus();
+    return screenRef.current ? inertOutside(screenRef.current) : undefined;
+  }, []);
+
+  function onKeyDown(event: ReactKeyboardEvent<HTMLDivElement>) {
+    if (event.key === "Escape") {
+      event.preventDefault();
+      if (!saving) onCancel();
+      return;
+    }
+    if (event.key !== "Tab" || !screenRef.current) return;
+    const focusable = Array.from(screenRef.current.querySelectorAll<HTMLElement>(FOCUSABLE));
+    if (focusable.length === 0) return;
+    const first = focusable[0];
+    const last = focusable[focusable.length - 1];
+    const current = document.activeElement;
+    const outside = !focusable.includes(current as HTMLElement);
+    if (event.shiftKey && (current === first || outside)) {
+      event.preventDefault();
+      last.focus();
+    } else if (!event.shiftKey && (current === last || outside)) {
+      event.preventDefault();
+      first.focus();
+    }
+  }
+
+  const child = childOptions.find((c) => c.id === childId) ?? childOptions[0];
+  const rangeValid = isValidRange(startDate, endDate);
+
+  useEffect(() => {
+    const seq = ++requestSeq.current;
+    if (!rangeValid) {
+      setConsequence({ kind: "invalid" });
+      return;
+    }
+    if (isPresent) {
+      // Keeping a child home removes nothing by definition.
+      setConsequence({ kind: "ready", removed: 0 });
+      return;
+    }
+    setConsequence({ kind: "counting" });
+    const timer = setTimeout(() => {
+      previewOverrideConsequence({
+        child_id: childId,
+        start_date: startDate,
+        end_date: endDate,
+        is_present: false,
+      })
+        .then((removed) => {
+          if (seq === requestSeq.current) setConsequence({ kind: "ready", removed });
+        })
+        .catch((err: unknown) => {
+          if (seq !== requestSeq.current) return;
+          setConsequence({
+            kind: "error",
+            message: errorMessage(err, "The upcoming tasks could not be counted. Try again."),
+          });
+        });
+    }, CONSEQUENCE_DEBOUNCE_MS);
+    return () => clearTimeout(timer);
+  }, [childId, startDate, endDate, isPresent, rangeValid]);
+
+  const canSave = rangeValid && consequence.kind === "ready" && !saving;
+
+  function save() {
+    if (!canSave) return;
+    const body: PresenceOverrideBody = {
+      child_id: childId,
+      start_date: startDate,
+      end_date: endDate,
+      is_present: isPresent,
+    };
+    const reason = note.trim();
+    if (reason) body.note = reason;
+    setSaving(true);
+    setError(null);
+    createPresenceOverride(body)
+      .then(onSaved)
+      .catch((err: unknown) => {
+        setError(errorMessage(err, "The override could not be saved. Check your connection and try again."));
+        setSaving(false);
+      });
+  }
+
+  let headline: string;
+  let detail: string;
+  const range = rangeValid ? dateRange(startDate, endDate) : "";
+  if (consequence.kind === "invalid") {
+    headline = "Choose a valid date range";
+    detail = "Through must be on or after From.";
+  } else if (consequence.kind === "counting") {
+    headline = "Counting upcoming tasks…";
+    detail = `${child.display_name} away ${range}. Completed days are untouched.`;
+  } else if (consequence.kind === "error") {
+    headline = "Upcoming tasks not counted";
+    detail = consequence.message;
+  } else {
+    headline = `This removes ${tasksPhrase(consequence.removed)}`;
+    detail = isPresent
+      ? `${child.display_name} is home ${range}, so no tasks are removed. Completed days are untouched.`
+      : `${child.display_name}'s open tasks ${range} are removed while away. Completed days are untouched.`;
+  }
+
+  return (
+    <div
+      ref={screenRef}
+      className="override-screen"
+      role="dialog"
+      aria-modal="true"
+      aria-labelledby="override-title"
+      onKeyDown={onKeyDown}
+    >
+      <header className="override-header">
+        <button type="button" className="override-back" aria-label="Back" onClick={onCancel}>
+          <ChevronLeftGlyph size={20} />
+        </button>
+        <div>
+          <h2 className="override-title" id="override-title" ref={titleRef} tabIndex={-1}>
+            Presence override
+          </h2>
+          <p className="override-sub">Beats the custody pattern for these dates</p>
+        </div>
+      </header>
+
+      <div className="override-scroll">
+        <section className="override-card" aria-label="Override details">
+          <div className="override-field">
+            <span className="override-label" id="override-label-child">
+              Child
+            </span>
+            <div className="override-segments override-segments--3" role="group" aria-labelledby="override-label-child">
+              {childOptions.map((c) => (
+                <button
+                  key={c.id}
+                  type="button"
+                  className="override-segment override-segment--gradient"
+                  aria-pressed={c.id === childId}
+                  onClick={() => setChildId(c.id)}
+                >
+                  {c.display_name}
+                </button>
+              ))}
+            </div>
+          </div>
+
+          <div className="override-field">
+            <span className="override-label" id="override-label-status">
+              Status for these dates
+            </span>
+            <div className="override-segments override-segments--2" role="group" aria-labelledby="override-label-status">
+              <button
+                type="button"
+                className="override-segment override-segment--ink"
+                aria-pressed={!isPresent}
+                onClick={() => setIsPresent(false)}
+              >
+                Away
+              </button>
+              <button
+                type="button"
+                className="override-segment override-segment--ink"
+                aria-pressed={isPresent}
+                onClick={() => setIsPresent(true)}
+              >
+                Home
+              </button>
+            </div>
+          </div>
+
+          <div className="override-dates">
+            <label className="override-field">
+              <span className="override-label">From</span>
+              <input
+                className="override-input override-date"
+                type="date"
+                value={startDate}
+                onChange={(event) => setStartDate(event.target.value)}
+              />
+            </label>
+            <label className="override-field">
+              <span className="override-label">Through</span>
+              <input
+                className="override-input override-date"
+                type="date"
+                value={endDate}
+                min={isIsoDate(startDate) ? startDate : undefined}
+                onChange={(event) => setEndDate(event.target.value)}
+              />
+            </label>
+          </div>
+
+          <label className="override-field">
+            <span className="override-label">Reason (optional)</span>
+            <input
+              className="override-input"
+              type="text"
+              value={note}
+              onChange={(event) => setNote(event.target.value)}
+            />
+          </label>
+        </section>
+
+        <section
+          className="override-warning"
+          aria-label="Consequence"
+          aria-live="polite"
+          data-testid="override-consequence"
+          data-state={consequence.kind}
+        >
+          <span className="override-warning-glyph">
+            <AlertCircleGlyph />
+          </span>
+          <div>
+            <p className="override-warning-headline" data-testid="override-consequence-headline">
+              {headline}
+            </p>
+            <p className="override-warning-body">{detail}</p>
+          </div>
+        </section>
+
+        {error ? (
+          <p className="override-error" role="alert" data-testid="override-error">
+            {error}
+          </p>
+        ) : null}
+
+        <div className="override-footer">
+          <button type="button" className="override-cancel" onClick={onCancel} disabled={saving}>
+            Cancel
+          </button>
+          <button type="button" className="override-save" onClick={save} disabled={!canSave}>
+            {saving ? "Saving…" : "Save override"}
+          </button>
+        </div>
+      </div>
+    </div>
+  );
+}

admin/src/schedule/ScheduleTab.css

@@ -0,0 +1,416 @@
+/* Schedule tab — compact density (design/ADMIN-SPEC.md §4). Mobile-first at
+   the 390x844 reference; on wider viewports the column is capped and centred. */
+
+.schedule-screen {
+  width: 100%;
+  max-width: 640px;
+  margin: 0 auto;
+}
+
+.schedule-header {
+  background: var(--nq-a-surface);
+  border-bottom: 1px solid var(--nq-a-border);
+  padding: 14px 16px;
+}
+
+.schedule-title {
+  margin: 0;
+  font-size: var(--nq-a-size-screen);
+  font-weight: 800;
+  letter-spacing: -0.02em;
+}
+
+.schedule-sub {
+  margin: 2px 0 0;
+  min-height: 1.4em;
+  font-size: 12px;
+  font-weight: 600;
+  color: var(--nq-a-ink-secondary);
+}
+
+/* Scroll column: 14px 16px, bottom 92px (set inline, ADMIN-SPEC §1). */
+.schedule-scroll {
+  display: flex;
+  flex-direction: column;
+  gap: var(--nq-a-density-gap);
+  padding: 14px 16px;
+}
+
+.schedule-card {
+  background: var(--nq-a-surface);
+  border: 1px solid var(--nq-a-border);
+  border-radius: var(--nq-a-density-radius);
+}
+
+/* Child selector */
+.schedule-children {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 6px;
+}
+
+.schedule-child-chip {
+  min-height: 32px;
+  padding: 0 12px;
+  border: 1px solid var(--nq-a-border);
+  border-radius: var(--nq-a-radius-pill);
+  background: var(--nq-a-surface);
+  color: var(--nq-a-ink-secondary);
+  font-family: inherit;
+  font-size: 12.5px;
+  font-weight: 700;
+  cursor: pointer;
+}
+
+.schedule-child-chip[aria-pressed="true"] {
+  border-color: var(--nq-brand-blue);
+  background: var(--nq-a-selected);
+  color: var(--nq-brand-blue);
+}
+
+/* Month grid card */
+.schedule-month {
+  padding: var(--nq-a-density-card-pad);
+}
+
+.schedule-month-head {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  margin-bottom: 8px;
+}
+
+.schedule-month-label {
+  font-size: 11px;
+  font-weight: 700;
+  text-transform: uppercase;
+  letter-spacing: 0.08em;
+}
+
+.schedule-chevrons {
+  display: flex;
+  gap: 4px;
+}
+
+.schedule-chevron {
+  display: grid;
+  place-items: center;
+  width: 28px;
+  height: 28px;
+  padding: 0;
+  border: 1px solid var(--nq-a-border);
+  border-radius: 6px;
+  background: var(--nq-a-surface);
+  color: var(--nq-a-ink-secondary);
+  cursor: pointer;
+}
+
+.schedule-grid {
+  display: grid;
+  grid-template-columns: repeat(7, 1fr);
+  gap: 4px;
+}
+
+.schedule-weekday {
+  text-align: center;
+  font-size: 10px;
+  font-weight: 700;
+  color: var(--nq-a-ink-tertiary);
+}
+
+.schedule-day {
+  aspect-ratio: 1;
+  padding: 0;
+  border: 1px solid transparent;
+  border-radius: 6px;
+  font-family: inherit;
+  font-size: 12px;
+  font-weight: 700;
+  cursor: pointer;
+}
+
+.schedule-day--home {
+  background: var(--nq-a-selected);
+  color: #201f7a;
+}
+
+.schedule-day--away {
+  background: var(--nq-a-page);
+  color: var(--nq-a-ink-secondary);
+}
+
+.schedule-day--override-away,
+.schedule-day--override-home {
+  background: var(--nq-a-warning-bg);
+  color: var(--nq-a-warning-ink);
+  border-color: var(--nq-a-warning-border);
+}
+
+/* An override that keeps the child home reads with a dashed border. */
+.schedule-day--override-home {
+  border-style: dashed;
+}
+
+.schedule-day--today {
+  background: var(--nq-brand-gradient);
+  border-color: transparent;
+  color: #fff;
+  font-weight: 800;
+}
+
+.schedule-legend {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 6px 12px;
+  margin: 10px 0 0;
+  padding: 0;
+  list-style: none;
+}
+
+.schedule-legend-item {
+  display: flex;
+  align-items: center;
+  gap: 5px;
+  font-size: 10.5px;
+  font-weight: 600;
+  color: var(--nq-a-ink-secondary);
+}
+
+.schedule-swatch {
+  display: inline-block;
+  width: 12px;
+  height: 12px;
+  border: 1px solid transparent;
+  border-radius: 3px;
+}
+
+/* Pattern editing controls */
+.schedule-controls {
+  display: flex;
+  flex-wrap: wrap;
+  align-items: flex-end;
+  gap: 8px;
+  margin-top: 12px;
+  padding-top: 12px;
+  border-top: 1px solid var(--nq-a-divider);
+}
+
+.schedule-field {
+  display: flex;
+  flex-direction: column;
+  gap: 3px;
+  font-size: var(--nq-a-size-label);
+  font-weight: 700;
+  text-transform: uppercase;
+  letter-spacing: 0.08em;
+  color: var(--nq-a-ink-secondary);
+}
+
+.schedule-field input,
+.schedule-field select {
+  min-height: 36px;
+  padding: 0 8px;
+  border: 1px solid var(--nq-a-border);
+  border-radius: 6px;
+  background: var(--nq-a-surface);
+  color: var(--nq-a-ink);
+  font-family: inherit;
+  font-size: 13px;
+  font-weight: 600;
+  text-transform: none;
+  letter-spacing: normal;
+}
+
+.schedule-save {
+  min-height: 36px;
+  margin-left: auto;
+  padding: 0 14px;
+  border: 0;
+  border-radius: var(--nq-a-density-radius);
+  background: var(--nq-brand-gradient);
+  color: #fff;
+  font-family: inherit;
+  font-size: 13px;
+  font-weight: 700;
+  cursor: pointer;
+}
+
+.schedule-save:disabled {
+  opacity: 0.45;
+  cursor: default;
+}
+
+.schedule-save-status {
+  margin: 8px 0 0;
+  font-size: 12px;
+  font-weight: 600;
+  color: var(--nq-a-success);
+}
+
+.schedule-save-status--error {
+  color: var(--nq-a-danger-strong);
+}
+
+/* Presence pattern + overrides cards */
+.schedule-section-head {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+}
+
+.schedule-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);
+}
+
+.schedule-text-action {
+  padding: 4px 0 0;
+  border: 0;
+  background: none;
+  color: var(--nq-brand-blue);
+  font-family: inherit;
+  font-size: 12.5px;
+  font-weight: 700;
+  cursor: pointer;
+}
+
+.schedule-list {
+  margin: 0;
+  padding: 0;
+  list-style: none;
+}
+
+.schedule-list > li + li {
+  border-top: 1px solid var(--nq-a-divider);
+}
+
+.schedule-row {
+  display: flex;
+  align-items: center;
+  gap: 10px;
+  min-height: var(--nq-a-tap-min);
+  padding: var(--nq-a-density-row-pad);
+}
+
+.schedule-row-glyph {
+  flex: none;
+  display: flex;
+  color: var(--nq-a-warning-ink);
+}
+
+.schedule-row-text {
+  flex: 1;
+  min-width: 0;
+}
+
+.schedule-row-title {
+  font-size: 13px;
+  font-weight: 700;
+}
+
+.schedule-row-meta {
+  font-size: var(--nq-a-size-meta);
+  font-weight: 600;
+  color: var(--nq-a-ink-secondary);
+}
+
+.schedule-rule {
+  flex: none;
+  font-size: 12px;
+  font-weight: 600;
+  color: var(--nq-a-ink-secondary);
+}
+
+.schedule-icon-action {
+  flex: none;
+  display: grid;
+  place-items: center;
+  width: var(--nq-a-tap-min);
+  height: var(--nq-a-tap-min);
+  margin: -8px -10px -8px 0;
+  padding: 0;
+  border: 0;
+  background: none;
+  color: var(--nq-a-ink-tertiary);
+  cursor: pointer;
+}
+
+.schedule-empty {
+  padding: var(--nq-a-density-card-pad);
+  font-size: 13px;
+  font-weight: 600;
+  color: var(--nq-a-ink-secondary);
+}
+
+/* Loading / error */
+.schedule-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);
+}
+
+.schedule-status--error {
+  color: var(--nq-a-danger-strong);
+}
+
+.schedule-status--error p {
+  margin: 0 0 10px;
+}
+
+.schedule-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;
+}
+
+/* Inline delete confirmation in an override row */
+.schedule-confirm {
+  flex: none;
+  display: flex;
+  align-items: center;
+  gap: 6px;
+}
+
+.schedule-confirm-text {
+  font-size: 12px;
+  font-weight: 700;
+  color: var(--nq-a-ink-secondary);
+}
+
+.schedule-confirm-keep,
+.schedule-confirm-delete {
+  min-height: 32px;
+  padding: 0 10px;
+  border-radius: 6px;
+  font-family: inherit;
+  font-size: 12px;
+  font-weight: 700;
+  cursor: pointer;
+}
+
+.schedule-confirm-keep {
+  border: 1px solid var(--nq-a-border);
+  background: var(--nq-a-surface);
+  color: var(--nq-a-ink);
+}
+
+.schedule-confirm-delete {
+  border: 0;
+  background: var(--nq-a-danger);
+  color: #fff;
+}

admin/src/schedule/ScheduleTab.test.tsx

@@ -0,0 +1,276 @@
+import { afterEach, beforeEach, describe, expect, it, vi } from "vitest";
+import { cleanup, fireEvent, render, screen, within } from "@testing-library/react";
+import ScheduleTab from "./ScheduleTab";
+import type { AdminChild } from "../api/definitions";
+import type { PresenceOverride, PresenceSchedule } from "../api/presence";
+import { storeTokens } from "../auth/oidc";
+
+function child(id: number, display_name: string, sort_order: number, is_active = true): AdminChild {
+  return { id, display_name, colour: null, avatar_ref: null, sort_order, is_active };
+}
+
+const CHILDREN = [
+  child(3, "Rory", 3),
+  child(1, "Declan", 1),
+  child(2, "Maeve", 2),
+  child(9, "Former", 4, false),
+];
+
+// Declan: anchor Monday 2026-09-07; cycle week 0 home every day, week 1 Sat/Sun.
+// Keys arrive as JSON strings, exactly as the API serializes them.
+const DECLAN: PresenceSchedule = {
+  child_id: 1,
+  cycle_length_weeks: 2,
+  anchor_date: "2026-09-07",
+  pattern: { "0": [0, 1, 2, 3, 4, 5, 6], "1": [5, 6] },
+};
+
+const MAEVE: PresenceSchedule = {
+  child_id: 2,
+  cycle_length_weeks: 4,
+  anchor_date: "2026-09-07",
+  pattern: { "0": [0, 1, 2, 3, 4, 5, 6], "1": [], "2": [0, 1, 2, 3, 4, 5, 6], "3": [] },
+};
+
+const OVERRIDES: PresenceOverride[] = [
+  { id: 41, child_id: 1, start_date: "2026-09-10", end_date: "2026-09-12", is_present: false, note: "Dentist trip" },
+  { id: 42, child_id: 1, start_date: "2026-09-16", end_date: "2026-09-16", is_present: true, note: null },
+  { id: 43, child_id: 2, start_date: "2026-09-28", end_date: "2026-10-02", is_present: false, note: "Camp" },
+];
+
+const TODAY = "2026-09-23";
+
+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>;
+let putResponse: (body: unknown) => Response;
+
+function routeFetch(url: string, init: RequestInit = {}): Response {
+  const path = new URL(url, "http://x").pathname;
+  if (init.method === "PUT") return putResponse(JSON.parse(String(init.body)));
+  if (path.endsWith("/admin/children")) return jsonResponse({ children: CHILDREN });
+  const match = /\/children\/(\d+)\/presence-schedule$/.exec(path);
+  if (match) {
+    const id = Number(match[1]);
+    return jsonResponse({ schedule: id === 1 ? DECLAN : id === 2 ? MAEVE : null });
+  }
+  if (path.endsWith("/presence-overrides")) return jsonResponse({ overrides: OVERRIDES });
+  return jsonResponse({ detail: "unexpected" }, 500);
+}
+
+function day(date: string): HTMLElement {
+  const cell = document.querySelector<HTMLElement>(`[data-date="${date}"]`);
+  if (!cell) throw new Error(`no cell for ${date}`);
+  return cell;
+}
+
+async function renderReady() {
+  render(<ScheduleTab today={TODAY} />);
+  await screen.findByTestId("pattern-1");
+}
+
+describe("ScheduleTab", () => {
+  beforeEach(() => {
+    sessionStorage.clear();
+    storeTokens({ access_token: "at-123", expires_in: 600 });
+    putResponse = (body) => jsonResponse({ child_id: 1, ...(body as object) });
+    fetchMock = vi.fn(async (url: string, init?: RequestInit) => routeFetch(url, init));
+    vi.stubGlobal("fetch", fetchMock);
+  });
+
+  afterEach(() => {
+    cleanup();
+    vi.unstubAllGlobals();
+  });
+
+  it("loads active children, their schedules and the overrides", async () => {
+    await renderReady();
+    const urls = fetchMock.mock.calls.map(([url]) => new URL(String(url), "http://x").pathname);
+    expect(urls).toContain("/api/v1/admin/children");
+    expect(urls).toContain("/api/v1/admin/children/1/presence-schedule");
+    expect(urls).toContain("/api/v1/admin/children/2/presence-schedule");
+    expect(urls).toContain("/api/v1/admin/children/3/presence-schedule");
+    expect(urls).not.toContain("/api/v1/admin/children/9/presence-schedule");
+    expect(urls).toContain("/api/v1/admin/presence-overrides");
+    const chips = within(screen.getByRole("group", { name: "Child" })).getAllByRole("button");
+    expect(chips.map((chip) => chip.textContent)).toEqual(["Declan", "Maeve", "Rory"]);
+    expect(chips[0].getAttribute("aria-pressed")).toBe("true");
+  });
+
+  it("header shows the cycle length and anchor", async () => {
+    await renderReady();
+    expect(screen.getByRole("heading", { name: "Schedule" })).toBeTruthy();
+    expect(screen.getByText("2-week cycle · anchor Monday, Sep 7")).toBeTruthy();
+  });
+
+  it("month grid renders home, away, override and today states from the anchor", async () => {
+    await renderReady();
+    expect(screen.getByTestId("month-label").textContent).toBe("September 2026");
+    const states: Record<string, string> = {
+      "2026-09-01": "away", // before the anchor: cycle week 1, Tuesday
+      "2026-09-05": "home", // before the anchor: cycle week 1, Saturday
+      "2026-09-07": "home", // anchor: week 0
+      "2026-09-11": "override-away",
+      "2026-09-15": "away", // week 1, Tuesday
+      "2026-09-16": "override-home",
+      "2026-09-19": "home", // week 1, Saturday
+      "2026-09-22": "home", // wrap back to week 0
+      "2026-09-29": "away", // week 1 again
+    };
+    for (const [date, state] of Object.entries(states)) {
+      expect(day(date).dataset.state, date).toBe(state);
+      expect(day(date).className).toContain(`schedule-day--${state}`);
+      expect(day(date).className).not.toContain("schedule-day--today");
+    }
+    const today = day(TODAY);
+    expect(today.className).toContain("schedule-day--today");
+    expect(today.dataset.state).toBe("home");
+    expect(today.getAttribute("aria-label")).toBe("Sep 23 (today): Home");
+    // September 2026 starts on a Tuesday: one leading pad after the initials.
+    const grid = screen.getByRole("group", { name: "Month grid" });
+    expect(grid.children[7].tagName).toBe("SPAN");
+    expect(grid.children[8].getAttribute("data-date")).toBe("2026-09-01");
+
+    const legend = screen.getByRole("list", { name: "Legend" });
+    expect(within(legend).getAllByRole("listitem").map((li) => li.textContent)).toEqual([
+      "Home",
+      "Away",
+      "Override · away",
+      "Override · home",
+      "Today",
+    ]);
+  });
+
+  it("navigates months with the chevrons", async () => {
+    await renderReady();
+    fireEvent.click(screen.getByRole("button", { name: "Next month" }));
+    expect(screen.getByTestId("month-label").textContent).toBe("October 2026");
+    // Oct 1 is day 24 from the anchor: cycle week 1, a Thursday — away.
+    expect(day("2026-10-01").dataset.state).toBe("away");
+    expect(day("2026-10-03").dataset.state).toBe("home"); // week 1, Saturday
+    expect(day("2026-10-05").dataset.state).toBe("home"); // week 0 again
+    fireEvent.click(screen.getByRole("button", { name: "Previous month" }));
+    expect(screen.getByTestId("month-label").textContent).toBe("September 2026");
+  });
+
+  it("presence pattern card shows a rule per child", async () => {
+    await renderReady();
+    expect(within(screen.getByTestId("pattern-1")).getByText("Weeks 1 & 2 of cycle")).toBeTruthy();
+    expect(within(screen.getByTestId("pattern-2")).getByText("Weeks 1 & 3 of cycle")).toBeTruthy();
+    expect(within(screen.getByTestId("pattern-3")).getByText("Every day")).toBeTruthy();
+  });
+
+  it("overrides card lists the selected child's overrides with inert actions", async () => {
+    await renderReady();
+    const list = screen.getByRole("list", { name: "Overrides" });
+    expect(within(list).getAllByRole("listitem")).toHaveLength(2);
+    const away = within(list).getByTestId("override-41");
+    expect(within(away).getByText("Declan away · Sep 10 – 12")).toBeTruthy();
+    expect(within(away).getByText("Dentist trip")).toBeTruthy();
+    expect(within(away).getByRole("button", { name: "Delete override" })).toBeTruthy();
+    expect(within(list).getByText("Declan home · Sep 16")).toBeTruthy();
+    expect(screen.getByRole("button", { name: "Add" })).toBeTruthy();
+
+    fireEvent.click(screen.getByRole("button", { name: "Maeve" }));
+    expect(screen.getByText("Maeve away · Sep 28 – Oct 2")).toBeTruthy();
+    expect(screen.getByText("4-week cycle · anchor Monday, Sep 7")).toBeTruthy();
+  });
+
+  it("a child with no schedule is home every day and defaults to a 2-week cycle", async () => {
+    await renderReady();
+    fireEvent.click(screen.getByRole("button", { name: "Rory" }));
+    expect(screen.getByText("2-week cycle · anchor Tuesday, Sep 1")).toBeTruthy();
+    expect(day("2026-09-15").dataset.state).toBe("home");
+    expect(screen.getByText("No overrides for Rory.")).toBeTruthy();
+    expect((screen.getByRole("button", { name: "Save pattern" }) as HTMLButtonElement).disabled).toBe(
+      true,
+    );
+  });
+
+  it("editing a day and saving PUTs the pattern; the grid reflects the saved schedule", async () => {
+    await renderReady();
+    expect(day("2026-09-01").dataset.state).toBe("away");
+    fireEvent.click(day("2026-09-01")); // cycle week 1 (pre-anchor), Tuesday
+
+    // The draft already shows the edit, and every other week-1 Tuesday follows.
+    expect(day("2026-09-01").dataset.state).toBe("home");
+    expect(day("2026-09-15").dataset.state).toBe("home");
+    expect(day("2026-09-08").dataset.state).toBe("home");
+
+    fireEvent.click(screen.getByRole("button", { name: "Save pattern" }));
+    expect(await screen.findByText("Pattern saved.")).toBeTruthy();
+
+    const put = fetchMock.mock.calls.find(([, init]) => init?.method === "PUT");
+    expect(put).toBeTruthy();
+    const [url, init] = put!;
+    expect(new URL(String(url), "http://x").pathname).toBe("/api/v1/admin/children/1/presence-schedule");
+    expect(init.headers.Authorization).toBe("Bearer at-123");
+    expect(JSON.parse(init.body)).toEqual({
+      cycle_length_weeks: 2,
+      anchor_date: "2026-09-07",
+      pattern: { "0": [0, 1, 2, 3, 4, 5, 6], "1": [1, 5, 6] },
+    });
+
+    expect(day("2026-09-15").dataset.state).toBe("home");
+    expect(day("2026-09-29").dataset.state).toBe("home");
+    expect(day("2026-09-30").dataset.state).toBe("away");
+    expect((screen.getByRole("button", { name: "Save pattern" }) as HTMLButtonElement).disabled).toBe(
+      true,
+    );
+  });
+
+  it("saves an edited anchor date and cycle length", async () => {
+    await renderReady();
+    fireEvent.change(screen.getByLabelText("Anchor date"), { target: { value: "2026-09-14" } });
+    fireEvent.change(screen.getByLabelText("Cycle length"), { target: { value: "3" } });
+    expect(screen.getByText("3-week cycle · anchor Monday, Sep 14")).toBeTruthy();
+    // Anchor moved a week: Sep 7-13 is now the last week of the cycle (full, added).
+    fireEvent.click(screen.getByRole("button", { name: "Save pattern" }));
+    await screen.findByText("Pattern saved.");
+    const [, init] = fetchMock.mock.calls.find(([, i]) => i?.method === "PUT")!;
+    expect(JSON.parse(init.body)).toEqual({
+      cycle_length_weeks: 3,
+      anchor_date: "2026-09-14",
+      pattern: {
+        "0": [0, 1, 2, 3, 4, 5, 6],
+        "1": [5, 6],
+        "2": [0, 1, 2, 3, 4, 5, 6],
+      },
+    });
+  });
+
+  it("a 422 shows the API detail and keeps the draft", async () => {
+    putResponse = () => jsonResponse({ detail: "anchor_date must be a Monday" }, 422);
+    await renderReady();
+    fireEvent.click(day("2026-09-01"));
+    fireEvent.click(screen.getByRole("button", { name: "Save pattern" }));
+
+    const alert = await screen.findByRole("alert");
+    expect(alert.textContent).toBe("anchor_date must be a Monday");
+    expect(day("2026-09-01").dataset.state).toBe("home");
+    expect((screen.getByRole("button", { name: "Save pattern" }) as HTMLButtonElement).disabled).toBe(
+      false,
+    );
+    // The saved rule is unchanged.
+    expect(within(screen.getByTestId("pattern-1")).getByText("Weeks 1 & 2 of cycle")).toBeTruthy();
+  });
+
+  it("scroll column ends with 92px bottom padding", async () => {
+    await renderReady();
+    expect(screen.getByTestId("schedule-scroll").style.paddingBottom).toBe("92px");
+  });
+
+  it("shows an error state on a failed load and retries", async () => {
+    fetchMock.mockResolvedValueOnce(new Response("boom", { status: 500 }));
+    render(<ScheduleTab today={TODAY} />);
+    const error = await screen.findByTestId("schedule-error");
+    expect(error.textContent).toContain("could not be loaded");
+    fireEvent.click(screen.getByRole("button", { name: "Try again" }));
+    expect(await screen.findByTestId("pattern-1")).toBeTruthy();
+  });
+});

admin/src/schedule/ScheduleTab.tsx

@@ -0,0 +1,557 @@
+/**
+ * Schedule tab — the presence month grid (design/ADMIN-SPEC.md §4).
+ *
+ * Every day's cycle position comes from the anchor date (./cycle.ts), never
+ * from ISO week numbers or week parity (D-004).
+ */
+import { useEffect, useRef, useState } from "react";
+import { ApiForbiddenError } from "../api/client";
+import { ApiRequestError, fetchChildren, type AdminChild } from "../api/definitions";
+import {
+  deletePresenceOverride,
+  fetchPresenceOverrides,
+  fetchPresenceSchedule,
+  savePresenceSchedule,
+  type PresenceOverride,
+  type PresenceSchedule,
+  type PresenceScheduleBody,
+} from "../api/presence";
+import {
+  cycleWeekIndex,
+  dayState,
+  fullPattern,
+  localTodayIso,
+  monthDates,
+  monthStart,
+  patternIncludes,
+  presenceRule,
+  resizePattern,
+  togglePatternDay,
+  weekdayOf,
+  type DayState,
+} from "./cycle";
+import { anchorLabel, dateRange, monthLabel, shortDate } from "./format";
+import {
+  CalendarCheckGlyph,
+  CalendarXGlyph,
+  ChevronLeftGlyph,
+  ChevronRightGlyph,
+  Trash2Glyph,
+} from "./glyphs";
+import OverrideEditor from "./OverrideEditor";
+import "./ScheduleTab.css";
+
+/** ADMIN-SPEC §1: every scroll column ends with 92px so content clears the tab bar. */
+export const SCROLL_BOTTOM_PADDING = "92px";
+
+export const DEFAULT_CYCLE_LENGTH_WEEKS = 2;
+const CYCLE_LENGTH_CHOICES = [1, 2, 3, 4];
+const WEEKDAY_INITIALS = ["M", "T", "W", "T", "F", "S", "S"];
+
+export const STATE_LABELS: Record<DayState, string> = {
+  home: "Home",
+  away: "Away",
+  "override-away": "Override · away",
+  "override-home": "Override · home",
+};
+
+interface Loaded {
+  children: AdminChild[];
+  schedules: Record<number, PresenceSchedule | null>;
+  overrides: PresenceOverride[];
+}
+
+type LoadState =
+  | { kind: "loading" }
+  | { kind: "error"; message: string }
+  | { kind: "ready"; data: Loaded };
+
+type DeleteState =
+  | { kind: "idle" }
+  | { kind: "confirming"; id: number }
+  | { kind: "deleting"; id: number }
+  | { kind: "error"; id: number; message: string };
+
+type SaveState =
+  | { kind: "idle" }
+  | { kind: "saving" }
+  | { kind: "saved" }
+  | { kind: "error"; message: string };
+
+async function loadSchedule(): Promise<Loaded> {
+  const children = (await fetchChildren())
+    .filter((child) => child.is_active)
+    .sort((a, b) => a.sort_order - b.sort_order);
+  const [schedules, overrides] = await Promise.all([
+    Promise.all(children.map((child) => fetchPresenceSchedule(child.id))),
+    fetchPresenceOverrides(),
+  ]);
+  return {
+    children,
+    schedules: Object.fromEntries(children.map((child, i) => [child.id, schedules[i]])),
+    overrides,
+  };
+}
+
+function loadErrorMessage(error: unknown): string {
+  return error instanceof ApiForbiddenError
+    ? error.message
+    : "The schedule could not be loaded. Check your connection and try again.";
+}
+
+function saveErrorMessage(
+  error: unknown,
+  fallback = "The pattern could not be saved. Check your connection and try again.",
+): string {
+  if (error instanceof ApiForbiddenError) return error.message;
+  if (error instanceof ApiRequestError && error.detail) return error.detail;
+  return fallback;
+}
+
+function ScreenHeader({ sub }: { sub: string }) {
+  return (
+    <header className="schedule-header">
+      <h2 className="schedule-title">Schedule</h2>
+      <p className="schedule-sub">{sub}</p>
+    </header>
+  );
+}
+
+interface MonthGridProps {
+  month: string;
+  today: string;
+  schedule: PresenceScheduleBody;
+  /** Null when the child has no saved schedule and no edits: home every day. */
+  effective: PresenceScheduleBody | null;
+  overrides: PresenceOverride[];
+  onMonth: (delta: number) => void;
+  onToggle: (date: string) => void;
+}
+
+function MonthGrid({ month, today, schedule, effective, overrides, onMonth, onToggle }: MonthGridProps) {
+  const dates = monthDates(month);
+  const leading = weekdayOf(month);
+  return (
+    <>
+      <div className="schedule-month-head">
+        <span className="schedule-month-label" data-testid="month-label">
+          {monthLabel(month)}
+        </span>
+        <div className="schedule-chevrons">
+          <button
+            type="button"
+            className="schedule-chevron"
+            aria-label="Previous month"
+            onClick={() => onMonth(-1)}
+          >
+            <ChevronLeftGlyph />
+          </button>
+          <button
+            type="button"
+            className="schedule-chevron"
+            aria-label="Next month"
+            onClick={() => onMonth(1)}
+          >
+            <ChevronRightGlyph />
+          </button>
+        </div>
+      </div>
+      <div className="schedule-grid" role="group" aria-label="Month grid">
+        {WEEKDAY_INITIALS.map((initial, i) => (
+          <span key={`wd-${i}`} className="schedule-weekday" aria-hidden="true">
+            {initial}
+          </span>
+        ))}
+        {Array.from({ length: leading }, (_, i) => (
+          <span key={`pad-${i}`} aria-hidden="true" />
+        ))}
+        {dates.map((date) => {
+          const state = dayState(effective, overrides, date);
+          const isToday = date === today;
+          let className = `schedule-day schedule-day--${state}`;
+          if (isToday) className += " schedule-day--today";
+          return (
+            <button
+              key={date}
+              type="button"
+              className={className}
+              data-date={date}
+              data-state={state}
+              aria-pressed={patternIncludes(schedule, date)}
+              aria-label={`${shortDate(date)}${isToday ? " (today)" : ""}: ${STATE_LABELS[state]}`}
+              onClick={() => onToggle(date)}
+            >
+              {Number(date.slice(8))}
+            </button>
+          );
+        })}
+      </div>
+      <ul className="schedule-legend" aria-label="Legend">
+        {(["home", "away", "override-away", "override-home"] as DayState[]).map((state) => (
+          <li key={state} className="schedule-legend-item">
+            <span className={`schedule-swatch schedule-day--${state}`} aria-hidden="true" />
+            {STATE_LABELS[state]}
+          </li>
+        ))}
+        <li className="schedule-legend-item">
+          <span className="schedule-swatch schedule-day--today" aria-hidden="true" />
+          Today
+        </li>
+      </ul>
+    </>
+  );
+}
+
+interface OverrideRowProps {
+  override: PresenceOverride;
+  childName: string;
+  deletion: DeleteState;
+  onAskDelete: () => void;
+  onKeep: () => void;
+  onDelete: () => void;
+}
+
+function OverrideRow({ override, childName, deletion, onAskDelete, onKeep, onDelete }: OverrideRowProps) {
+  const mine =
+    (deletion.kind === "confirming" || deletion.kind === "deleting") && deletion.id === override.id;
+  return (
+    <li className="schedule-row" data-testid={`override-${override.id}`}>
+      <span className="schedule-row-glyph">
+        {override.is_present ? <CalendarCheckGlyph /> : <CalendarXGlyph />}
+      </span>
+      <div className="schedule-row-text">
+        <div className="schedule-row-title">
+          {childName} {override.is_present ? "home" : "away"} ·{" "}
+          {dateRange(override.start_date, override.end_date)}
+        </div>
+        <div className="schedule-row-meta">{override.note || "No reason given"}</div>
+      </div>
+      {mine ? (
+        <div className="schedule-confirm" role="group" aria-label="Confirm delete">
+          <span className="schedule-confirm-text">Delete override?</span>
+          <button
+            type="button"
+            className="schedule-confirm-keep"
+            onClick={onKeep}
+            disabled={deletion.kind === "deleting"}
+          >
+            Keep
+          </button>
+          <button
+            type="button"
+            className="schedule-confirm-delete"
+            onClick={onDelete}
+            disabled={deletion.kind === "deleting"}
+          >
+            {deletion.kind === "deleting" ? "Deleting…" : "Delete"}
+          </button>
+        </div>
+      ) : (
+        <button
+          type="button"
+          className="schedule-icon-action"
+          aria-label="Delete override"
+          onClick={onAskDelete}
+        >
+          <Trash2Glyph />
+        </button>
+      )}
+    </li>
+  );
+}
+
+export interface ScheduleTabProps {
+  /** "YYYY-MM-DD"; defaults to the viewer's local date. */
+  today?: string;
+}
+
+export default function ScheduleTab({ today = localTodayIso() }: ScheduleTabProps) {
+  const [state, setState] = useState<LoadState>({ kind: "loading" });
+  const [attempt, setAttempt] = useState(0);
+  const [selectedId, setSelectedId] = useState<number | null>(null);
+  const [month, setMonth] = useState(() => monthStart(today));
+  const [drafts, setDrafts] = useState<Record<number, PresenceScheduleBody>>({});
+  const [save, setSave] = useState<SaveState>({ kind: "idle" });
+  const [editorOpen, setEditorOpen] = useState(false);
+  const [deletion, setDeletion] = useState<DeleteState>({ kind: "idle" });
+  const addRef = useRef<HTMLButtonElement>(null);
+  const editorWasOpen = useRef(false);
+
+  // The editor replaces this screen, so Add is remounted when it closes;
+  // hand focus back to it then.
+  useEffect(() => {
+    if (editorWasOpen.current && !editorOpen) addRef.current?.focus();
+    editorWasOpen.current = editorOpen;
+  }, [editorOpen]);
+
+  /** Reload children, schedules and overrides in place (no loading flash). */
+  const refresh = () =>
+    loadSchedule()
+      .then((data) => setState({ kind: "ready", data }))
+      .catch((error: unknown) => setState({ kind: "error", message: loadErrorMessage(error) }));
+
+  useEffect(() => {
+    let cancelled = false;
+    setState({ kind: "loading" });
+    loadSchedule()
+      .then((data) => {
+        if (cancelled) return;
+        setState({ kind: "ready", data });
+        setSelectedId((current) => current ?? data.children[0]?.id ?? null);
+      })
+      .catch((error: unknown) => {
+        if (cancelled) return;
+        setState({ kind: "error", message: loadErrorMessage(error) });
+      });
+    return () => {
+      cancelled = true;
+    };
+  }, [attempt]);
+
+  if (editorOpen && state.kind === "ready" && state.data.children.length > 0) {
+    const { children } = state.data;
+    return (
+      <OverrideEditor
+        childOptions={children}
+        initialChildId={children.find((c) => c.id === selectedId)?.id ?? children[0].id}
+        today={today}
+        onCancel={() => setEditorOpen(false)}
+        onSaved={(override) => {
+          setEditorOpen(false);
+          setSelectedId(override.child_id);
+          void refresh();
+        }}
+      />
+    );
+  }
+
+  let sub = "";
+  let body;
+  if (state.kind === "loading") {
+    body = (
+      <div className="schedule-status" role="status" data-testid="schedule-loading">
+        Loading schedule…
+      </div>
+    );
+  } else if (state.kind === "error") {
+    body = (
+      <div className="schedule-status schedule-status--error" role="alert" data-testid="schedule-error">
+        <p>{state.message}</p>
+        <button type="button" className="schedule-retry" onClick={() => setAttempt((n) => n + 1)}>
+          Try again
+        </button>
+      </div>
+    );
+  } else if (state.data.children.length === 0) {
+    body = <div className="schedule-card schedule-empty">No children yet.</div>;
+  } else {
+    const { data } = state;
+    const child = data.children.find((c) => c.id === selectedId) ?? data.children[0];
+    const saved = data.schedules[child.id] ?? null;
+    const draft = drafts[child.id];
+    // Edits start from the saved schedule, or — with none — from "home every
+    // day" on a 2-week cycle anchored at the displayed month's 1st.
+    const schedule: PresenceScheduleBody = draft ??
+      saved ?? {
+        cycle_length_weeks: DEFAULT_CYCLE_LENGTH_WEEKS,
+        anchor_date: month,
+        pattern: fullPattern(DEFAULT_CYCLE_LENGTH_WEEKS),
+      };
+    const effective = draft ?? saved;
+    const childOverrides = data.overrides.filter((o) => o.child_id === child.id);
+    sub = `${schedule.cycle_length_weeks}-week cycle · anchor ${anchorLabel(schedule.anchor_date)}`;
+
+    const edit = (next: PresenceScheduleBody) => {
+      setDrafts((all) => ({ ...all, [child.id]: next }));
+      setSave({ kind: "idle" });
+    };
+    const toggle = (date: string) => {
+      const week = cycleWeekIndex(schedule.anchor_date, date, schedule.cycle_length_weeks);
+      edit({ ...schedule, pattern: togglePatternDay(schedule.pattern, week, weekdayOf(date)) });
+    };
+    const confirmDelete = (id: number) => {
+      setDeletion({ kind: "deleting", id });
+      deletePresenceOverride(id)
+        .then(() => refresh())
+        .then(() => setDeletion({ kind: "idle" }))
+        .catch((error: unknown) =>
+          setDeletion({
+            kind: "error",
+            id,
+            message: saveErrorMessage(
+              error,
+              "The override could not be deleted. Check your connection and try again.",
+            ),
+          }),
+        );
+    };
+    const submit = () => {
+      if (!draft) return;
+      const childId = child.id;
+      setSave({ kind: "saving" });
+      const { cycle_length_weeks, anchor_date, pattern } = draft;
+      savePresenceSchedule(childId, { cycle_length_weeks, anchor_date, pattern })
+        .then((stored) => {
+          setState((current) =>
+            current.kind === "ready"
+              ? {
+                  kind: "ready",
+                  data: {
+                    ...current.data,
+                    schedules: { ...current.data.schedules, [childId]: stored },
+                  },
+                }
+              : current,
+          );
+          setDrafts((all) => {
+            const rest = { ...all };
+            delete rest[childId];
+            return rest;
+          });
+          setSave({ kind: "saved" });
+        })
+        .catch((error: unknown) => setSave({ kind: "error", message: saveErrorMessage(error) }));
+    };
+
+    body = (
+      <>
+        <div className="schedule-children" role="group" aria-label="Child">
+          {data.children.map((c) => (
+            <button
+              key={c.id}
+              type="button"
+              className="schedule-child-chip"
+              aria-pressed={c.id === child.id}
+              onClick={() => {
+                setSelectedId(c.id);
+                setSave({ kind: "idle" });
+              }}
+            >
+              {c.display_name}
+            </button>
+          ))}
+        </div>
+
+        <section className="schedule-card schedule-month" aria-label="Month grid card">
+          <MonthGrid
+            month={month}
+            today={today}
+            schedule={schedule}
+            effective={effective}
+            overrides={childOverrides}
+            onMonth={(delta) => setMonth((m) => monthStart(m, delta))}
+            onToggle={toggle}
+          />
+          <div className="schedule-controls">
+            <label className="schedule-field">
+              <span>Anchor date</span>
+              <input
+                type="date"
+                value={schedule.anchor_date}
+                onChange={(event) => {
+                  if (event.target.value) edit({ ...schedule, anchor_date: event.target.value });
+                }}
+              />
+            </label>
+            <label className="schedule-field">
+              <span>Cycle length</span>
+              <select
+                value={schedule.cycle_length_weeks}
+                onChange={(event) => {
+                  const weeks = Number(event.target.value);
+                  edit({
+                    ...schedule,
+                    cycle_length_weeks: weeks,
+                    pattern: resizePattern(schedule.pattern, weeks),
+                  });
+                }}
+              >
+                {CYCLE_LENGTH_CHOICES.map((weeks) => (
+                  <option key={weeks} value={weeks}>
+                    {weeks} {weeks === 1 ? "week" : "weeks"}
+                  </option>
+                ))}
+              </select>
+            </label>
+            <button
+              type="button"
+              className="schedule-save"
+              disabled={!draft || save.kind === "saving"}
+              onClick={submit}
+            >
+              {save.kind === "saving" ? "Saving…" : "Save pattern"}
+            </button>
+          </div>
+          {save.kind === "error" ? (
+            <p className="schedule-save-status schedule-save-status--error" role="alert">
+              {save.message}
+            </p>
+          ) : save.kind === "saved" ? (
+            <p className="schedule-save-status" role="status">
+              Pattern saved.
+            </p>
+          ) : null}
+        </section>
+
+        <h3 className="schedule-section-label">Presence pattern</h3>
+        <ul className="schedule-card schedule-list" aria-label="Presence pattern">
+          {data.children.map((c) => (
+            <li key={c.id} className="schedule-row" data-testid={`pattern-${c.id}`}>
+              <div className="schedule-row-text">
+                <div className="schedule-row-title">{c.display_name}</div>
+              </div>
+              <span className="schedule-rule">{presenceRule(data.schedules[c.id] ?? null)}</span>
+            </li>
+          ))}
+        </ul>
+
+        <div className="schedule-section-head">
+          <h3 className="schedule-section-label">Overrides</h3>
+          <button
+            ref={addRef}
+            type="button"
+            className="schedule-text-action"
+            onClick={() => setEditorOpen(true)}
+          >
+            Add
+          </button>
+        </div>
+        {childOverrides.length > 0 ? (
+          <ul className="schedule-card schedule-list" aria-label="Overrides">
+            {childOverrides.map((override) => (
+              <OverrideRow
+                key={override.id}
+                override={override}
+                childName={child.display_name}
+                deletion={deletion}
+                onAskDelete={() => setDeletion({ kind: "confirming", id: override.id })}
+                onKeep={() => setDeletion({ kind: "idle" })}
+                onDelete={() => confirmDelete(override.id)}
+              />
+            ))}
+          </ul>
+        ) : (
+          <div className="schedule-card schedule-empty">No overrides for {child.display_name}.</div>
+        )}
+        {deletion.kind === "error" ? (
+          <p className="schedule-save-status schedule-save-status--error" role="alert">
+            {deletion.message}
+          </p>
+        ) : null}
+      </>
+    );
+  }
+
+  return (
+    <div className="schedule-screen">
+      <ScreenHeader sub={sub} />
+      <div
+        className="schedule-scroll"
+        data-testid="schedule-scroll"
+        style={{ paddingBottom: SCROLL_BOTTOM_PADDING }}
+      >
+        {body}
+      </div>
+    </div>
+  );
+}

admin/src/schedule/cycle.test.ts

@@ -0,0 +1,115 @@
+import { describe, expect, it } from "vitest";
+import {
+  cycleWeekIndex,
+  dayState,
+  monthDates,
+  monthStart,
+  presenceRule,
+  resizePattern,
+  togglePatternDay,
+  weekdayOf,
+} from "./cycle";
+import type { PresenceOverride, PresenceScheduleBody } from "../api/presence";
+
+// Anchor Monday 2026-09-07; week 0 home every day, week 1 home Sat/Sun only.
+const SCHEDULE: PresenceScheduleBody = {
+  cycle_length_weeks: 2,
+  anchor_date: "2026-09-07",
+  pattern: { 0: [0, 1, 2, 3, 4, 5, 6], 1: [5, 6] },
+};
+
+describe("cycleWeekIndex", () => {
+  it("follows the anchor across a month, wrapping every 2 weeks", () => {
+    const expected: Record<string, number> = {};
+    for (const date of monthDates("2026-09-01")) {
+      const day = Number(date.slice(8));
+      // Sep 7-13 week 0, 14-20 week 1, 21-27 week 0 (wrap), 28-30 week 1;
+      // Sep 1-6 lie before the anchor and walk back into week 1.
+      expected[date] = day < 7 ? 1 : Math.floor((day - 7) / 7) % 2;
+    }
+    for (const [date, week] of Object.entries(expected)) {
+      expect(cycleWeekIndex(SCHEDULE.anchor_date, date, 2), date).toBe(week);
+    }
+    expect(cycleWeekIndex("2026-09-07", "2026-09-21", 2)).toBe(0);
+    expect(cycleWeekIndex("2026-09-07", "2026-09-28", 2)).toBe(1);
+  });
+
+  it("walks the cycle backwards before the anchor (floor division)", () => {
+    expect(cycleWeekIndex("2026-09-07", "2026-09-06", 2)).toBe(1); // day -1
+    expect(cycleWeekIndex("2026-09-07", "2026-08-31", 2)).toBe(1); // day -7
+    expect(cycleWeekIndex("2026-09-07", "2026-08-30", 2)).toBe(0); // day -8
+    expect(cycleWeekIndex("2026-09-07", "2026-08-24", 2)).toBe(0); // day -14
+    expect(cycleWeekIndex("2026-09-07", "2026-08-23", 2)).toBe(1); // day -15
+    expect(cycleWeekIndex("2026-09-07", "2026-09-06", 3)).toBe(2); // last week of a 3-week cycle
+  });
+
+  it("ignores ISO week parity across a 53-week year", () => {
+    // 2026-12-28 is ISO week 53 and 2027-01-04 ISO week 1 — both odd, so
+    // parity would call them the same week. From the anchor they alternate.
+    expect(cycleWeekIndex("2026-09-07", "2026-12-28", 2)).toBe(0);
+    expect(cycleWeekIndex("2026-09-07", "2027-01-04", 2)).toBe(1);
+  });
+});
+
+describe("calendar helpers", () => {
+  it("weekdayOf is Monday=0", () => {
+    expect(weekdayOf("2026-09-07")).toBe(0);
+    expect(weekdayOf("2026-09-01")).toBe(1);
+    expect(weekdayOf("2026-09-06")).toBe(6);
+  });
+
+  it("monthStart shifts across year ends", () => {
+    expect(monthStart("2026-12-15", 1)).toBe("2027-01-01");
+    expect(monthStart("2026-01-31", -1)).toBe("2025-12-01");
+    expect(monthDates("2026-02-01")).toHaveLength(28);
+  });
+});
+
+describe("dayState", () => {
+  const overrides: PresenceOverride[] = [
+    { id: 1, child_id: 1, start_date: "2026-09-10", end_date: "2026-09-12", is_present: false, note: null },
+    { id: 2, child_id: 1, start_date: "2026-09-16", end_date: "2026-09-16", is_present: true, note: null },
+  ];
+
+  it("applies overrides first, then the anchor-based pattern", () => {
+    expect(dayState(SCHEDULE, overrides, "2026-09-08")).toBe("home");
+    expect(dayState(SCHEDULE, overrides, "2026-09-11")).toBe("override-away");
+    expect(dayState(SCHEDULE, overrides, "2026-09-15")).toBe("away");
+    expect(dayState(SCHEDULE, overrides, "2026-09-16")).toBe("override-home");
+    expect(dayState(SCHEDULE, overrides, "2026-09-19")).toBe("home");
+    expect(dayState(SCHEDULE, overrides, "2026-09-01")).toBe("away");
+    expect(dayState(SCHEDULE, overrides, "2026-09-05")).toBe("home");
+  });
+
+  it("treats a child with no schedule as home every day", () => {
+    expect(dayState(null, [], "2026-09-15")).toBe("home");
+  });
+});
+
+describe("pattern editing and rule text", () => {
+  it("toggles one weekday of one cycle week", () => {
+    expect(togglePatternDay(SCHEDULE.pattern, 1, 1)).toEqual({
+      0: [0, 1, 2, 3, 4, 5, 6],
+      1: [1, 5, 6],
+    });
+    expect(togglePatternDay(SCHEDULE.pattern, 1, 5)[1]).toEqual([6]);
+  });
+
+  it("resizes the pattern to the cycle length", () => {
+    expect(resizePattern(SCHEDULE.pattern, 1)).toEqual({ 0: [0, 1, 2, 3, 4, 5, 6] });
+    expect(resizePattern(SCHEDULE.pattern, 3)[2]).toEqual([0, 1, 2, 3, 4, 5, 6]);
+  });
+
+  it("describes the presence rule in plain language", () => {
+    expect(presenceRule(null)).toBe("Every day");
+    expect(presenceRule({ ...SCHEDULE, pattern: { 0: [0, 1, 2, 3, 4, 5, 6], 1: [0, 1, 2, 3, 4, 5, 6] } })).toBe(
+      "Every day",
+    );
+    expect(presenceRule(SCHEDULE)).toBe("Weeks 1 & 2 of cycle");
+    expect(
+      presenceRule({ cycle_length_weeks: 4, anchor_date: "2026-09-07", pattern: { 0: [0], 1: [], 2: [3], 3: [] } }),
+    ).toBe("Weeks 1 & 3 of cycle");
+    expect(presenceRule({ ...SCHEDULE, pattern: { 0: [1], 1: [] } })).toBe("Week 1 of cycle");
+    expect(presenceRule({ ...SCHEDULE, pattern: { 0: [], 1: [] } })).toBe("Never home");
+  });
+});

admin/src/schedule/cycle.ts

@@ -0,0 +1,142 @@
+/**
+ * Pure presence-cycle math for the Schedule tab.
+ *
+ * Cycle position comes from the anchor date ONLY, mirroring
+ * core/presence.py `cycle_week_index`:
+ * `((date - anchor).days // 7) % cycle_length_weeks` with floor division,
+ * so dates before the anchor walk the cycle backwards. Never ISO week
+ * numbers or week parity (D-004).
+ *
+ * Calendar dates are "YYYY-MM-DD" strings handled as whole UTC days, so no
+ * viewer offset or DST change can shift a day.
+ */
+import type { PresenceOverride, PresencePattern, PresenceScheduleBody } from "../api/presence";
+
+const MS_PER_DAY = 86_400_000;
+
+export const ALL_WEEKDAYS = [0, 1, 2, 3, 4, 5, 6];
+
+/** Days since 1970-01-01 for a "YYYY-MM-DD" calendar date. */
+export function dayNumber(iso: string): number {
+  const match = /^(\d{4})-(\d{2})-(\d{2})$/.exec(iso);
+  if (!match) throw new Error(`Invalid calendar date: ${iso}`);
+  const [, year, month, day] = match;
+  return Date.UTC(Number(year), Number(month) - 1, Number(day)) / MS_PER_DAY;
+}
+
+export function isoFromDayNumber(days: number): string {
+  return new Date(days * MS_PER_DAY).toISOString().slice(0, 10);
+}
+
+/** Floor modulo: always in 0..divisor-1, like Python's `%`. */
+function mod(value: number, divisor: number): number {
+  return ((value % divisor) + divisor) % divisor;
+}
+
+/** 0 = Monday .. 6 = Sunday (1970-01-01 was a Thursday). */
+export function weekdayOf(iso: string): number {
+  return mod(dayNumber(iso) + 3, 7);
+}
+
+/** `((date - anchor).days // 7) % cycleLengthWeeks`, Python semantics. */
+export function cycleWeekIndex(anchorDate: string, date: string, cycleLengthWeeks: number): number {
+  const days = dayNumber(date) - dayNumber(anchorDate);
+  return mod(Math.floor(days / 7), cycleLengthWeeks);
+}
+
+/** The viewer's local calendar date. */
+export function localTodayIso(now: Date = new Date()): string {
+  const month = String(now.getMonth() + 1).padStart(2, "0");
+  const day = String(now.getDate()).padStart(2, "0");
+  return `${now.getFullYear()}-${month}-${day}`;
+}
+
+/** "YYYY-MM-01" of the month containing `iso`, shifted by `delta` months. */
+export function monthStart(iso: string, delta = 0): string {
+  const [year, month] = iso.split("-").map(Number);
+  const date = new Date(Date.UTC(year, month - 1 + delta, 1));
+  return date.toISOString().slice(0, 10);
+}
+
+/** Every date of the month starting at `firstIso`. */
+export function monthDates(firstIso: string): string[] {
+  const start = dayNumber(firstIso);
+  const end = dayNumber(monthStart(firstIso, 1));
+  const dates: string[] = [];
+  for (let day = start; day < end; day += 1) dates.push(isoFromDayNumber(day));
+  return dates;
+}
+
+/** Present every day for every week of the cycle (the no-schedule case). */
+export function fullPattern(cycleLengthWeeks: number): PresencePattern {
+  const pattern: PresencePattern = {};
+  for (let week = 0; week < cycleLengthWeeks; week += 1) pattern[week] = [...ALL_WEEKDAYS];
+  return pattern;
+}
+
+export type DayState = "home" | "away" | "override-home" | "override-away";
+
+export function patternIncludes(
+  schedule: PresenceScheduleBody,
+  date: string,
+): boolean {
+  const week = cycleWeekIndex(schedule.anchor_date, date, schedule.cycle_length_weeks);
+  return (schedule.pattern[week] ?? []).includes(weekdayOf(date));
+}
+
+/**
+ * A date's state for one child: an override covering the date wins;
+ * otherwise the schedule's pattern decides (no schedule = home every day).
+ */
+export function dayState(
+  schedule: PresenceScheduleBody | null,
+  overrides: PresenceOverride[],
+  date: string,
+): DayState {
+  const override = overrides.find((o) => o.start_date <= date && date <= o.end_date);
+  if (override) return override.is_present ? "override-home" : "override-away";
+  if (!schedule) return "home";
+  return patternIncludes(schedule, date) ? "home" : "away";
+}
+
+/** Flip `weekday` in `week` of the pattern; returns a new pattern. */
+export function togglePatternDay(
+  pattern: PresencePattern,
+  week: number,
+  weekday: number,
+): PresencePattern {
+  const days = pattern[week] ?? [];
+  const next = days.includes(weekday)
+    ? days.filter((d) => d !== weekday)
+    : [...days, weekday].sort((a, b) => a - b);
+  return { ...pattern, [week]: next };
+}
+
+/** Fit the pattern to a new cycle length; added weeks start present every day. */
+export function resizePattern(pattern: PresencePattern, cycleLengthWeeks: number): PresencePattern {
+  const next: PresencePattern = {};
+  for (let week = 0; week < cycleLengthWeeks; week += 1) {
+    next[week] = pattern[week] ? [...pattern[week]] : [...ALL_WEEKDAYS];
+  }
+  return next;
+}
+
+function joinWeeks(weeks: number[]): string {
+  if (weeks.length === 1) return String(weeks[0]);
+  return `${weeks.slice(0, -1).join(", ")} & ${weeks[weeks.length - 1]}`;
+}
+
+/** Plain-language rule: `Every day`, `Weeks 1 & 3 of cycle`, `Never home`. */
+export function presenceRule(schedule: PresenceScheduleBody | null): string {
+  if (!schedule) return "Every day";
+  const weeks: number[] = [];
+  let full = true;
+  for (let week = 0; week < schedule.cycle_length_weeks; week += 1) {
+    const days = schedule.pattern[week] ?? [];
+    if (days.length > 0) weeks.push(week + 1);
+    if (days.length < 7) full = false;
+  }
+  if (full) return "Every day";
+  if (weeks.length === 0) return "Never home";
+  return `${weeks.length === 1 ? "Week" : "Weeks"} ${joinWeeks(weeks)} of cycle`;
+}

admin/src/schedule/format.ts

@@ -0,0 +1,37 @@
+/**
+ * Date labels for the Schedule tab. Calendar dates are formatted in UTC from
+ * their components, so the printed day never shifts with the viewer's offset.
+ */
+import { dayNumber } from "./cycle";
+
+const LOCALE = "en-US";
+
+function utcDate(iso: string): Date {
+  return new Date(dayNumber(iso) * 86_400_000);
+}
+
+function format(iso: string, options: Intl.DateTimeFormatOptions): string {
+  return new Intl.DateTimeFormat(LOCALE, { ...options, timeZone: "UTC" }).format(utcDate(iso));
+}
+
+/** "Tuesday, Sep 1" */
+export function anchorLabel(iso: string): string {
+  return `${format(iso, { weekday: "long" })}, ${format(iso, { month: "short", day: "numeric" })}`;
+}
+
+/** "September 2026" */
+export function monthLabel(iso: string): string {
+  return format(iso, { month: "long", year: "numeric" });
+}
+
+/** "Sep 4" */
+export function shortDate(iso: string): string {
+  return format(iso, { month: "short", day: "numeric" });
+}
+
+/** "Sep 4 – 7", "Sep 28 – Oct 2", or "Sep 4" for a single day. */
+export function dateRange(start: string, end: string): string {
+  if (start === end) return shortDate(start);
+  const sameMonth = start.slice(0, 7) === end.slice(0, 7);
+  return `${shortDate(start)} – ${sameMonth ? Number(end.slice(8)) : shortDate(end)}`;
+}

admin/src/schedule/glyphs.tsx

@@ -0,0 +1,85 @@
+/**
+ * Inline stroke glyphs for the Schedule tab (Lucide-style 24px grid),
+ * CDN-free like the Today and Tasks tabs' glyphs.
+ */
+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 ChevronLeftGlyph({ size = 16 }: { size?: number }) {
+  return (
+    <Glyph size={size}>
+      <path d="m15 18-6-6 6-6" />
+    </Glyph>
+  );
+}
+
+export function ChevronRightGlyph({ size = 16 }: { size?: number }) {
+  return (
+    <Glyph size={size}>
+      <path d="m9 18 6-6-6-6" />
+    </Glyph>
+  );
+}
+
+function CalendarFrame() {
+  return (
+    <>
+      <path d="M8 2v4M16 2v4" />
+      <rect x="3" y="4" width="18" height="18" rx="2" />
+      <path d="M3 10h18" />
+    </>
+  );
+}
+
+export function CalendarXGlyph({ size = 18 }: { size?: number }) {
+  return (
+    <Glyph size={size}>
+      <CalendarFrame />
+      <path d="m14 14-4 4M10 14l4 4" />
+    </Glyph>
+  );
+}
+
+export function CalendarCheckGlyph({ size = 18 }: { size?: number }) {
+  return (
+    <Glyph size={size}>
+      <CalendarFrame />
+      <path d="m9 16 2 2 4-4" />
+    </Glyph>
+  );
+}
+
+export function Trash2Glyph({ size = 16 }: { size?: number }) {
+  return (
+    <Glyph size={size}>
+      <path d="M3 6h18M19 6v14a2 2 0 0 1-2 2H7a2 2 0 0 1-2-2V6M8 6V4a2 2 0 0 1 2-2h4a2 2 0 0 1 2 2v2M10 11v6M14 11v6" />
+    </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>
+  );
+}

admin/src/today/TodayTab.css

@@ -241,6 +241,37 @@
   color: var(--nq-brand-purple);
 }
 
+.today-action:disabled {
+  cursor: default;
+  opacity: 0.5;
+}
+
+/* Non-blocking Undo failure message. */
+.today-action-error {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 10px;
+  padding: var(--nq-a-density-row-pad);
+  border-radius: var(--nq-a-density-radius);
+  background: var(--nq-a-danger-bg);
+  color: var(--nq-a-danger-strong);
+  font-size: 13px;
+  font-weight: 600;
+}
+
+.today-action-dismiss {
+  flex: none;
+  padding: 4px 8px;
+  border: none;
+  background: none;
+  color: inherit;
+  font-family: inherit;
+  font-size: 12.5px;
+  font-weight: 700;
+  cursor: pointer;
+}
+
 .today-empty {
   padding: var(--nq-a-density-card-pad);
   font-size: 13px;

admin/src/today/TodayTab.test.tsx

@@ -1,7 +1,9 @@
 import { afterAll, afterEach, beforeAll, beforeEach, describe, expect, it, vi } from "vitest";
-import { cleanup, fireEvent, render, screen, within } from "@testing-library/react";
+import { cleanup, fireEvent, render, screen, waitFor, within } from "@testing-library/react";
 import TodayTab, { PERMISSION_NOTE } from "./TodayTab";
 import type { AdminSnapshot, SnapshotInstance } from "../api/snapshot";
+import { TransitionsProvider } from "../api/useTransitions";
+import { frame, testStream, type TestStream } from "../api/testStream";
 import { storeTokens } from "../auth/oidc";
 
 function instance(overrides: Partial<SnapshotInstance>): SnapshotInstance {
@@ -221,3 +223,186 @@ describe("TodayTab", () => {
     expect(error.textContent).toContain("nestquest-admins");
   });
 });
+
+/** SNAPSHOT after instance 12 ("Make bed") is reversed back to open. */
+const AFTER_UNDO: AdminSnapshot = {
+  ...SNAPSHOT,
+  children: SNAPSHOT.children.map((child) =>
+    child.child_id !== 1
+      ? child
+      : {
+          ...child,
+          completed_today: 2,
+          remaining_today: 5,
+          completion_pct: 29,
+          instances: child.instances.map((i) =>
+            i.id === 12 ? { ...i, state: "open" as const, completed_at: null, on_time: null } : i,
+          ),
+        },
+  ),
+};
+
+function deferred<T>() {
+  let resolve!: (value: T) => void;
+  const promise = new Promise<T>((r) => {
+    resolve = r;
+  });
+  return { promise, resolve };
+}
+
+describe("TodayTab Undo and live updates", () => {
+  let fetchMock: ReturnType<typeof vi.fn>;
+  let snapshots: AdminSnapshot[];
+  let uncomplete: () => Promise<Response>;
+  let streams: TestStream[];
+
+  function calls(pathSuffix: string, method = "GET") {
+    return fetchMock.mock.calls.filter(
+      ([url, init]) =>
+        new URL(String(url), "http://x").pathname.endsWith(pathSuffix) &&
+        (init?.method ?? "GET") === method,
+    );
+  }
+
+  beforeAll(() => {
+    vi.stubEnv("TZ", "America/Los_Angeles");
+  });
+
+  afterAll(() => {
+    vi.unstubAllEnvs();
+  });
+
+  beforeEach(() => {
+    sessionStorage.clear();
+    storeTokens({ access_token: "at-123", expires_in: 600 });
+    snapshots = [SNAPSHOT, AFTER_UNDO];
+    uncomplete = () =>
+      Promise.resolve(jsonResponse({ instance_id: 12, state: "open", appended: true }));
+    streams = [];
+    fetchMock = vi.fn((url: string) => {
+      const path = new URL(url, "http://x").pathname;
+      if (path.endsWith("/api/v1/admin/snapshot")) {
+        const next = snapshots.length > 1 ? snapshots.shift()! : snapshots[0];
+        return Promise.resolve(jsonResponse(next));
+      }
+      if (path.endsWith("/api/v1/admin/instances/12/uncomplete")) return uncomplete();
+      if (path.endsWith("/api/v1/admin/events")) {
+        const stream = testStream();
+        streams.push(stream);
+        return Promise.resolve(stream.response);
+      }
+      return Promise.resolve(jsonResponse({ detail: "unexpected" }, 500));
+    });
+    vi.stubGlobal("fetch", fetchMock);
+  });
+
+  afterEach(() => {
+    cleanup();
+    vi.unstubAllGlobals();
+  });
+
+  it("Undo POSTs uncomplete for the completed instance and refetches the snapshot", async () => {
+    render(<TodayTab />);
+    const row = await screen.findByTestId("attention-12");
+    fireEvent.click(within(row).getByRole("button", { name: "Undo" }));
+
+    await waitFor(() => expect(screen.queryByTestId("attention-12")).toBeNull());
+    const posts = calls("/api/v1/admin/instances/12/uncomplete", "POST");
+    expect(posts).toHaveLength(1);
+    expect(posts[0][1].headers.Authorization).toBe("Bearer at-123");
+    expect(calls("/api/v1/admin/snapshot")).toHaveLength(2);
+    // The reversed instance is open again: one fewer done, one more remaining.
+    expect(screen.getByTestId("stat-done").textContent).toBe("6Done");
+    expect(screen.getByTestId("stat-remaining").textContent).toBe("5Remaining");
+    expect(screen.queryByTestId("today-undo-error")).toBeNull();
+  });
+
+  it("disables Undo while the request is in flight (no double submit)", async () => {
+    const pending = deferred<Response>();
+    uncomplete = () => pending.promise;
+    render(<TodayTab />);
+    const row = await screen.findByTestId("attention-12");
+    const button = within(row).getByRole("button", { name: "Undo" }) as HTMLButtonElement;
+
+    fireEvent.click(button);
+    await waitFor(() => expect(button.disabled).toBe(true));
+    expect(button.textContent).toBe("Undoing…");
+    // Every Undo is disabled while one reversal is in flight.
+    const other = within(screen.getByTestId("attention-14")).getByRole("button", {
+      name: "Undo",
+    }) as HTMLButtonElement;
+    expect(other.disabled).toBe(true);
+    fireEvent.click(button);
+    fireEvent.click(other);
+    expect(calls("/api/v1/admin/instances/12/uncomplete", "POST")).toHaveLength(1);
+    expect(calls("/uncomplete", "POST")).toHaveLength(1);
+
+    pending.resolve(jsonResponse({ instance_id: 12, state: "open", appended: true }));
+    await waitFor(() => expect(screen.queryByTestId("attention-12")).toBeNull());
+    expect(other.disabled).toBe(false);
+  });
+
+  it("a failed Undo shows a message and leaves the view intact", async () => {
+    uncomplete = () => Promise.resolve(jsonResponse({ detail: "instance 12 not found" }, 404));
+    render(<TodayTab />);
+    const row = await screen.findByTestId("attention-12");
+    fireEvent.click(within(row).getByRole("button", { name: "Undo" }));
+
+    const alert = await screen.findByTestId("today-undo-error");
+    expect(alert.textContent).toContain("The completion could not be undone: instance 12 not found");
+    // Still the original snapshot: nothing refetched, the row and its Undo remain usable.
+    expect(calls("/api/v1/admin/snapshot")).toHaveLength(1);
+    const button = within(screen.getByTestId("attention-12")).getByRole("button", {
+      name: "Undo",
+    }) as HTMLButtonElement;
+    expect(button.disabled).toBe(false);
+    expect(screen.getByTestId("stat-done").textContent).toBe("7Done");
+
+    fireEvent.click(within(alert).getByRole("button", { name: "Dismiss" }));
+    expect(screen.queryByTestId("today-undo-error")).toBeNull();
+  });
+
+  it("Mark done stays inert", async () => {
+    render(<TodayTab />);
+    const row = await screen.findByTestId("attention-11");
+    fireEvent.click(within(row).getByRole("button", { name: "Mark done" }));
+    expect(fetchMock.mock.calls.filter(([, init]) => init?.method === "POST")).toHaveLength(0);
+  });
+
+  it("a transition on the live stream refetches the snapshot without a reload", async () => {
+    const { unmount } = render(
+      <TransitionsProvider>
+        <TodayTab />
+      </TransitionsProvider>,
+    );
+    await screen.findByTestId("attention-12");
+    await waitFor(() => expect(streams).toHaveLength(1));
+    const [, init] = calls("/api/v1/admin/events")[0];
+    expect(init.headers.Authorization).toBe("Bearer at-123");
+
+    // An uncompletion made elsewhere, its frame split across two chunks.
+    const text = frame("nestquest_quest_uncompleted", {
+      child_id: 1,
+      child_name: "Declan",
+      instance_id: 12,
+      quest_title: "Make bed",
+      window: "morning",
+      due_date: "2026-09-23",
+      due_time: null,
+      occurred_at: "2026-09-23T12:00:00Z",
+    });
+    streams[0].push(text.slice(0, 25));
+    streams[0].push(text.slice(25));
+
+    await waitFor(() => expect(calls("/api/v1/admin/snapshot")).toHaveLength(2));
+    await waitFor(() => expect(screen.queryByTestId("attention-12")).toBeNull());
+    // Refreshed in place: the loading state never replaced the view.
+    expect(screen.queryByTestId("today-loading")).toBeNull();
+
+    const signal = init.signal as AbortSignal;
+    expect(signal.aborted).toBe(false);
+    unmount();
+    expect(signal.aborted).toBe(true);
+    await waitFor(() => expect(streams[0].cancelled()).toBe(true));
+  });
+});

admin/src/today/TodayTab.tsx

@@ -1,7 +1,7 @@
 /**
  * Today tab — compact density (design/ADMIN-SPEC.md §2.1–2.3, §2.5–2.6).
  */
-import { useEffect, useState } from "react";
+import { useEffect, useRef, useState } from "react";
 import {
   fetchSnapshot,
   type AdminSnapshot,
@@ -9,6 +9,9 @@ import {
   type SnapshotInstance,
 } from "../api/snapshot";
 import { ApiForbiddenError } from "../api/client";
+import { ApiRequestError } from "../api/definitions";
+import { uncompleteInstance } from "../api/instances";
+import { useTransitions } from "../api/useTransitions";
 import {
   formatClockTime,
   formatDueTime,
@@ -144,11 +147,18 @@ function attentionItems(snapshot: AdminSnapshot): AttentionItem[] {
   return [...overdue, ...completed];
 }
 
-function AttentionRow({ item }: { item: AttentionItem }) {
+interface UndoControl {
+  /** The instance whose Undo is in flight, or null. */
+  pendingId: number | null;
+  onUndo: (instanceId: number) => void;
+}
+
+function AttentionRow({ item, undo }: { item: AttentionItem; undo: UndoControl }) {
   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.
+  const undoing = undo.pendingId === instance.id;
+  // TODO(e57facc2): wire "Mark done". The admin plane has no complete route
+  // yet, so that action is inert here.
   return (
     <li className="today-event" data-testid={`attention-${instance.id}`}>
       <span
@@ -173,12 +183,21 @@ function AttentionRow({ item }: { item: AttentionItem }) {
           </div>
         )}
       </div>
-      <button
-        type="button"
-        className={overdue ? "today-action today-action--done" : "today-action today-action--undo"}
-      >
-        {overdue ? "Mark done" : "Undo"}
-      </button>
+      {overdue ? (
+        <button type="button" className="today-action today-action--done">
+          Mark done
+        </button>
+      ) : (
+        <button
+          type="button"
+          className="today-action today-action--undo"
+          disabled={undo.pendingId !== null}
+          aria-busy={undoing}
+          onClick={() => undo.onUndo(instance.id)}
+        >
+          {undoing ? "Undoing…" : "Undo"}
+        </button>
+      )}
     </li>
   );
 }
@@ -197,10 +216,25 @@ function PermissionNote() {
 export default function TodayTab() {
   const [state, setState] = useState<LoadState>({ kind: "loading" });
   const [attempt, setAttempt] = useState(0);
+  /** The next load is a refresh in place: keep the current view, no loading state. */
+  const silentNext = useRef(false);
+  const [undoingId, setUndoingId] = useState<number | null>(null);
+  const undoingRef = useRef(false);
+  const [undoError, setUndoError] = useState<string | null>(null);
+
+  function refresh() {
+    silentNext.current = true;
+    setAttempt((n) => n + 1);
+  }
+
+  // Any transition (completed, uncompleted, missed, day complete) changes the snapshot.
+  useTransitions(refresh);
 
   useEffect(() => {
     let cancelled = false;
-    setState({ kind: "loading" });
+    const silent = silentNext.current;
+    silentNext.current = false;
+    if (!silent) setState({ kind: "loading" });
     fetchSnapshot()
       .then((snapshot) => {
         if (!cancelled) setState({ kind: "ready", snapshot });
@@ -211,13 +245,37 @@ export default function TodayTab() {
           error instanceof ApiForbiddenError
             ? error.message
             : "Today's snapshot could not be loaded. Check your connection and try again.";
-        setState({ kind: "error", message });
+        // A failed refresh keeps the snapshot already on screen.
+        setState((prev) => (silent && prev.kind === "ready" ? prev : { kind: "error", message }));
       });
     return () => {
       cancelled = true;
     };
   }, [attempt]);
 
+  /** Reverse one completion, then refetch the snapshot. One request at a time. */
+  async function undo(instanceId: number) {
+    if (undoingRef.current) return;
+    undoingRef.current = true;
+    setUndoingId(instanceId);
+    setUndoError(null);
+    try {
+      await uncompleteInstance(instanceId);
+      refresh();
+    } catch (error: unknown) {
+      setUndoError(
+        error instanceof ApiForbiddenError
+          ? error.message
+          : error instanceof ApiRequestError && error.detail
+            ? `The completion could not be undone: ${error.detail}`
+            : "The completion could not be undone. Check your connection and try again.",
+      );
+    } finally {
+      undoingRef.current = false;
+      setUndoingId(null);
+    }
+  }
+
   let sub = "";
   let body;
   if (state.kind === "loading") {
@@ -251,7 +309,11 @@ export default function TodayTab() {
         {attention.length > 0 ? (
           <ul className="today-card today-list" aria-label="Needs attention">
             {attention.map((item) => (
-              <AttentionRow key={item.instance.id} item={item} />
+              <AttentionRow
+                key={item.instance.id}
+                item={item}
+                undo={{ pendingId: undoingId, onUndo: (id) => void undo(id) }}
+              />
             ))}
           </ul>
         ) : (
@@ -270,6 +332,14 @@ export default function TodayTab() {
         data-testid="today-scroll"
         style={{ paddingBottom: SCROLL_BOTTOM_PADDING }}
       >
+        {undoError !== null ? (
+          <div className="today-action-error" role="alert" data-testid="today-undo-error">
+            <span>{undoError}</span>
+            <button type="button" className="today-action-dismiss" onClick={() => setUndoError(null)}>
+              Dismiss
+            </button>
+          </div>
+        ) : null}
         {body}
       </div>
     </div>

api/README.md

@@ -0,0 +1,40 @@
+# NestQuest API
+
+Standalone FastAPI service owning the NestQuest database (Feature 16).
+Served with ``uvicorn --factory api.app:create_app``; configuration is
+environment-supplied (``api/config.py``) and every variable is required.
+
+## Runtime dependencies
+
+``api/requirements.txt`` is the API deployable's OWN dependency
+manifest (fastapi, uvicorn, pyjwt[crypto], httpx) — deliberately kept
+out of the integration's ``pyproject.toml`` dev group, which exists only
+so the monorepo test venv can run the API tests.
+
+## Container deployment (scaffold)
+
+The image is built from the repository ROOT context (the API loads the
+bundled domain core from ``custom_components/nestquest/core/`` by file
+location, so both trees must be in the build context):
+
+    docker build -t nestquest-api:latest .
+
+Run it with compose — the SQLite file lives on the named volume
+``nestquest-db`` so recreating the container keeps household data:
+
+    cp deploy/.env.example deploy/.env   # then fill in real values
+    docker compose -f deploy/compose.yaml up -d --build
+
+``deploy/.env`` is git-ignored and supplies the secrets (panel service
+token, Authentik OIDC settings); ``NESTQUEST_DB_PATH`` is fixed to
+``/var/lib/nestquest/nestquest.db`` by compose.
+
+The published port binds ``NESTQUEST_BIND_ADDRESS`` from
+``deploy/.env`` and defaults to ``127.0.0.1`` (localhost only). In
+production TLS is terminated by the shared Traefik reverse proxy,
+which serves ``https://nestquest.cubecraftlabs.com`` (Let's Encrypt,
+auto-renewed, HTTP redirected to HTTPS) and forwards to the API box
+on port 8080 — so on that box set ``NESTQUEST_BIND_ADDRESS`` to its
+LAN address (``10.60.1.14``). Traefik only allows
+``/api/v1/panel`` from the Home Assistant host. Network separation,
+backup and restore are later Feature 17 tasks.

api/requirements.txt

@@ -0,0 +1,15 @@
+# Runtime dependency manifest for the NestQuest API deployable.
+#
+# The monorepo's pyproject.toml carries fastapi/uvicorn/pyjwt/httpx in
+# the INTEGRATION's dev group only (so the test venv can exercise the
+# API); they are deliberately NOT integration runtime dependencies.
+# Per that manifest's own comment, the API deployable declares its own
+# runtime dependencies HERE — this file is what the container image
+# installs (see the Dockerfile at the repository root).
+#
+# Compatible ranges mirroring the dev group's floors; the API is a
+# server, so these are the only packages its runtime needs.
+fastapi>=0.115
+uvicorn>=0.30
+pyjwt[crypto]>=2.9
+httpx>=0.28

deploy/.env.example

@@ -0,0 +1,23 @@
+# Example environment for the NestQuest API container deployment.
+#
+# Copy to ``deploy/.env`` (git-ignored) and fill in REAL values there;
+# this example carries placeholder names only and is never a source of
+# secrets.  Compose loads ``deploy/.env`` into the api service; the
+# API fails fast on startup when any of these is unset or empty
+# (api/config.py — there are no silent defaults).
+
+# The static panel-plane service token the HA integration presents as
+# a Bearer credential on /api/v1/panel/* routes. Generate one, e.g.:
+#   python -c "import secrets; print(secrets.token_urlsafe(32))"
+NESTQUEST_PANEL_TOKEN=
+
+# The Authentik OIDC settings the admin plane verifies JWTs against.
+NESTQUEST_OIDC_ISSUER=
+NESTQUEST_OIDC_AUDIENCE=
+NESTQUEST_OIDC_JWKS_URL=
+
+# The host interface the API's port 8080 is published on (compose
+# interpolation, not read by the API).  Defaults to 127.0.0.1 when
+# unset; on the API box set the LAN address the reverse proxy
+# forwards to, e.g. 10.60.1.14.
+NESTQUEST_BIND_ADDRESS=

deploy/compose.yaml

@@ -0,0 +1,46 @@
+# Compose deployment scaffold for the NestQuest API service (Feature
+# 17).  The SQLite database lives on the NAMED VOLUME ``nestquest-db``
+# mounted at /var/lib/nestquest — recreating the container keeps the
+# household data (``docker compose down`` leaves named volumes alone).
+#
+# Configuration is supplied by the environment: the fixed database
+# path here, and the secret values (panel service token, Authentik
+# OIDC settings) from ``deploy/.env`` — a git-ignored file you create
+# from ``deploy/.env.example`` (placeholder names only; never commit
+# real values).
+#
+# TLS is terminated by the shared Traefik reverse proxy on another
+# host, which forwards to this service on port 8080.  The published
+# port binds NESTQUEST_BIND_ADDRESS (read from deploy/.env, the
+# project directory's env file): it defaults to 127.0.0.1 so an
+# unconfigured deployment is never exposed; set it to the host's LAN
+# address on the API box so the proxy can reach it.
+services:
+  api:
+    build:
+      context: ..
+      dockerfile: Dockerfile
+    image: nestquest-api:latest
+    init: true
+    restart: unless-stopped
+    ports:
+      - "${NESTQUEST_BIND_ADDRESS:-127.0.0.1}:8080:8080"
+    environment:
+      # The SQLite file inside the named volume; fixed, not a secret.
+      NESTQUEST_DB_PATH: /var/lib/nestquest/nestquest.db
+    env_file:
+      # Secret values (NESTQUEST_PANEL_TOKEN, NESTQUEST_OIDC_*); absent
+      # until you create deploy/.env from the example.
+      - path: .env
+        required: false
+    volumes:
+      - nestquest-db:/var/lib/nestquest
+    healthcheck:
+      test: ["CMD", "python", "-c", "import urllib.request; urllib.request.urlopen('http://127.0.0.1:8080/health')"]
+      interval: 10s
+      timeout: 5s
+      retries: 5
+      start_period: 15s
+
+volumes:
+  nestquest-db: