Add Schedule tab presence month grid

Render the admin Schedule tab (ADMIN-SPEC §4): a month grid per child
showing home, away, override and today states, with cycle position
computed from the anchor date by floor division (never ISO week
parity), a presence pattern card, and the overrides list. Tapping a day
toggles that cycle week's weekday; anchor date and cycle length are
editable and Save pattern PUTs the schedule to the admin presence
route. The override editor (Add/delete) is left inert for 4ae0c879.

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

admin/.env.example

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

admin/.gitignore

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

admin/index.html

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

admin/package.json

@@ -0,0 +1,28 @@
+{
+  "name": "nestquest-admin",
+  "private": true,
+  "version": "0.0.0",
+  "type": "module",
+  "scripts": {
+    "dev": "vite",
+    "build": "vite build",
+    "preview": "vite preview",
+    "test": "vitest run"
+  },
+  "dependencies": {
+    "lucide-react": "^1.47.0",
+    "react": "^19.2.0",
+    "react-dom": "^19.2.0"
+  },
+  "devDependencies": {
+    "@testing-library/dom": "^10.4.1",
+    "@testing-library/react": "^16.3.0",
+    "@types/react": "^19.2.0",
+    "@types/react-dom": "^19.2.0",
+    "@vitejs/plugin-react": "^5.0.0",
+    "jsdom": "^30.1.1",
+    "typescript": "^5.9.2",
+    "vite": "^7.1.5",
+    "vitest": "^3.2.4"
+  }
+}

admin/public/manifest.webmanifest

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

admin/public/sw.js

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

admin/scripts/generate-icons.mjs

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

admin/src/App.css

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

admin/src/App.test.tsx

@@ -0,0 +1,48 @@
+import { afterEach, beforeEach, describe, expect, it, vi } from "vitest";
+import { cleanup, fireEvent, render, screen } from "@testing-library/react";
+import App from "./App";
+
+describe("NestQuest Admin shell", () => {
+  beforeEach(() => {
+    // The Today tab fetches the admin snapshot; keep the shell tests offline.
+    vi.stubGlobal("fetch", vi.fn(() => new Promise<Response>(() => {})));
+  });
+
+  afterEach(() => {
+    cleanup();
+    vi.unstubAllGlobals();
+  });
+
+  it("renders the title and all four tab labels", () => {
+    render(<App />);
+
+    expect(screen.getByRole("heading", { name: "NestQuest Admin" })).toBeTruthy();
+    for (const label of ["Today", "Tasks", "Schedule", "History"]) {
+      expect(screen.getByRole("tab", { name: label })).toBeTruthy();
+    }
+  });
+
+  it("starts on the Today screen and switches on tab click", () => {
+    render(<App />);
+
+    expect(screen.getByRole("heading", { name: "Today" })).toBeTruthy();
+
+    fireEvent.click(screen.getByRole("tab", { name: "History" }));
+
+    expect(screen.getByRole("tabpanel").textContent).toContain(
+      "History placeholder",
+    );
+    expect(screen.getByRole("tab", { name: "History" }).getAttribute("aria-selected")).toBe(
+      "true",
+    );
+  });
+
+  it("the Tasks tab renders the definitions screen", () => {
+    render(<App />);
+
+    fireEvent.click(screen.getByRole("tab", { name: "Tasks" }));
+
+    expect(screen.getByRole("heading", { name: "Tasks" })).toBeTruthy();
+    expect(screen.getByRole("tabpanel").textContent).not.toContain("placeholder");
+  });
+});

admin/src/App.tsx

@@ -0,0 +1,63 @@
+import { useState } from "react";
+import "./App.css";
+import DefinitionsTab from "./definitions/DefinitionsTab";
+import ScheduleTab from "./schedule/ScheduleTab";
+import TodayTab from "./today/TodayTab";
+
+const TABS = [
+  { id: "today", label: "Today" },
+  { id: "tasks", label: "Tasks" },
+  { id: "schedule", label: "Schedule" },
+  { id: "history", label: "History" },
+] as const;
+
+type TabId = (typeof TABS)[number]["id"];
+
+export default function App() {
+  const [active, setActive] = useState<TabId>("today");
+  // Built screens own their header (ADMIN-SPEC §1); the generic shell header
+  // stays for placeholder tabs and is visually hidden otherwise.
+  const hasScreen = active === "today" || active === "tasks" || active === "schedule";
+
+  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-${active}`}
+      >
+        {active === "today" ? (
+          <TodayTab />
+        ) : active === "tasks" ? (
+          <DefinitionsTab />
+        ) : active === "schedule" ? (
+          <ScheduleTab />
+        ) : (
+          <p className="admin-placeholder">
+            {TABS.find((tab) => tab.id === active)?.label} placeholder — screens
+            arrive in later tasks.
+          </p>
+        )}
+      </main>
+      <nav className="admin-tabbar" aria-label="Admin sections">
+        {TABS.map((tab) => (
+          <button
+            key={tab.id}
+            id={`tab-${tab.id}`}
+            type="button"
+            role="tab"
+            aria-selected={tab.id === active}
+            className={tab.id === active ? "admin-tab active" : "admin-tab"}
+            onClick={() => setActive(tab.id)}
+          >
+            {tab.label}
+          </button>
+        ))}
+      </nav>
+    </div>
+  );
+}

admin/src/AppRoutes.test.tsx

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

admin/src/AppRoutes.tsx

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

admin/src/api/client.test.ts

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

admin/src/api/client.ts

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

admin/src/api/definitions.ts

@@ -0,0 +1,174 @@
+/**
+ * Typed client for the admin quest-definition routes and the children list
+ * the assignee picker reads (/api/v1/admin/quest-definitions, /children).
+ */
+import { apiFetch } from "./client";
+
+export type WindowName = "morning" | "afternoon" | "evening";
+
+/** Model rule names, as the admin plane serializes ScheduleRule.to_dict. */
+export type RuleType =
+  | "daily"
+  | "weekly"
+  | "monthly_day"
+  | "monthly_weekday"
+  | "yearly"
+  | "custom_days";
+
+export interface DefinitionRule {
+  rule_type: RuleType;
+  interval: number;
+  /** 0 = Monday .. 6 = Sunday. */
+  weekday_set: number[] | null;
+  day_of_month: number | null;
+  nth_weekday: number | null;
+  nth_weekday_weekday: number | null;
+  month: number | null;
+  start_date: string;
+  end_date: string | null;
+}
+
+export interface DefinitionAssignee {
+  id: number;
+  display_name: string;
+}
+
+export interface DefinitionWindow {
+  window: WindowName;
+  /** Local wall-clock "HH:MM", or null. */
+  due_time: string | null;
+}
+
+export interface QuestDefinition {
+  id: number;
+  title: string;
+  description: string | null;
+  icon: string | null;
+  is_active: boolean;
+  skip_on_away: boolean;
+  rule: DefinitionRule;
+  assignees: DefinitionAssignee[];
+  windows: DefinitionWindow[];
+}
+
+export interface AdminChild {
+  id: number;
+  display_name: string;
+  colour: string | null;
+  avatar_ref: string | null;
+  sort_order: number;
+  is_active: boolean;
+}
+
+/** A window declaration as the create/edit bodies accept it. */
+export type WindowEntry = WindowName | [WindowName, string | null];
+
+export interface DefinitionCreateBody {
+  title: string;
+  rule: DefinitionRule;
+  assignee_child_ids: number[];
+  windows: WindowEntry[];
+  description?: string | null;
+  icon?: string | null;
+  skip_on_away?: boolean;
+}
+
+export type DefinitionEditBody = Partial<DefinitionCreateBody>;
+
+export const DEFINITIONS_PATH = "/api/v1/admin/quest-definitions";
+export const CHILDREN_PATH = "/api/v1/admin/children";
+
+/** A non-2xx save response; `detail` is the API's message when it sent one. */
+export class ApiRequestError extends Error {
+  constructor(
+    readonly status: number,
+    readonly detail: string | null,
+  ) {
+    super(detail ?? `Request failed (HTTP ${status}).`);
+    this.name = "ApiRequestError";
+  }
+}
+
+/** FastAPI sends `detail` as a string (core errors) or a list of {msg} (body validation). */
+function readDetail(body: unknown): string | null {
+  if (!body || typeof body !== "object" || !("detail" in body)) return null;
+  const { detail } = body as { detail: unknown };
+  if (typeof detail === "string") return detail;
+  if (Array.isArray(detail)) {
+    const messages = detail
+      .map((item) => (item && typeof item === "object" ? (item as { msg?: unknown }).msg : null))
+      .filter((msg): msg is string => typeof msg === "string");
+    return messages.length > 0 ? messages.join("; ") : null;
+  }
+  return null;
+}
+
+export async function readJson<T>(response: Response): Promise<T> {
+  if (!response.ok) {
+    let body: unknown = null;
+    try {
+      body = await response.json();
+    } catch {
+      // Non-JSON error body: report the status alone.
+    }
+    throw new ApiRequestError(response.status, readDetail(body));
+  }
+  return (await response.json()) as T;
+}
+
+export async function fetchDefinitions(): Promise<QuestDefinition[]> {
+  const body = await readJson<{ definitions: QuestDefinition[] }>(
+    await apiFetch(DEFINITIONS_PATH),
+  );
+  return body.definitions;
+}
+
+export async function fetchChildren(): Promise<AdminChild[]> {
+  const body = await readJson<{ children: AdminChild[] }>(await apiFetch(CHILDREN_PATH));
+  return body.children;
+}
+
+function sendJson(path: string, method: "POST" | "PATCH", body: unknown): Promise<Response> {
+  return apiFetch(path, {
+    method,
+    headers: { "Content-Type": "application/json" },
+    body: JSON.stringify(body),
+  });
+}
+
+export async function createDefinition(body: DefinitionCreateBody): Promise<QuestDefinition> {
+  return readJson<QuestDefinition>(await sendJson(DEFINITIONS_PATH, "POST", body));
+}
+
+export async function updateDefinition(
+  id: number,
+  body: DefinitionEditBody,
+): Promise<QuestDefinition> {
+  return readJson<QuestDefinition>(await sendJson(`${DEFINITIONS_PATH}/${id}`, "PATCH", body));
+}
+
+export const OCCURRENCES_PREVIEW_PATH = `${DEFINITIONS_PATH}/occurrences-preview`;
+
+export interface OccurrencesPreviewOptions {
+  /** "YYYY-MM-DD"; the API defaults to its host's today. */
+  startDate?: string;
+  /** 1..50; the API defaults to 10. */
+  count?: number;
+}
+
+/**
+ * The next occurrence dates ("YYYY-MM-DD", ascending) for `rule`, computed by
+ * the same backend recurrence engine the materializer uses.
+ */
+export async function previewOccurrences(
+  rule: DefinitionRule,
+  options: OccurrencesPreviewOptions = {},
+): Promise<string[]> {
+  const body: { rule: DefinitionRule; start_date?: string; count?: number } = { rule };
+  if (options.startDate !== undefined) body.start_date = options.startDate;
+  if (options.count !== undefined) body.count = options.count;
+  const response = await readJson<{ dates: string[] }>(
+    await sendJson(OCCURRENCES_PREVIEW_PATH, "POST", body),
+  );
+  return response.dates;
+}

admin/src/api/presence.ts

@@ -0,0 +1,82 @@
+/**
+ * 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;
+}

admin/src/api/snapshot.ts

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

admin/src/auth/oidc.test.ts

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

admin/src/auth/oidc.ts

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

admin/src/auth/pkce.test.ts

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

admin/src/auth/pkce.ts

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

admin/src/config.test.ts

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

admin/src/config.ts

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

admin/src/definitions/DefinitionsTab.css

@@ -0,0 +1,585 @@
+/* Definitions ("Tasks") tab — list + edit sheet (design/ADMIN-SPEC.md §3.1–3.2).
+   Mobile-first at the 390x844 reference; the column is capped and centred wider. */
+
+.defs-screen {
+  width: 100%;
+  max-width: 640px;
+  margin: 0 auto;
+}
+
+/* §3.1 header */
+.defs-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;
+}
+
+.defs-title {
+  margin: 0;
+  font-size: var(--nq-a-size-screen);
+  font-weight: 800;
+  letter-spacing: -0.02em;
+}
+
+.defs-sub {
+  margin: 2px 0 0;
+  min-height: 1.4em;
+  font-size: 12px;
+  font-weight: 600;
+  color: var(--nq-a-ink-secondary);
+}
+
+.defs-new {
+  flex: none;
+  display: inline-flex;
+  align-items: center;
+  gap: 4px;
+  min-height: 36px;
+  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;
+}
+
+.defs-new:disabled {
+  opacity: 0.5;
+  cursor: default;
+}
+
+/* Scroll column: 14px 16px, bottom 92px (set inline, ADMIN-SPEC §1). */
+.defs-scroll {
+  display: flex;
+  flex-direction: column;
+  gap: var(--nq-a-density-gap);
+  padding: 14px 16px;
+}
+
+/* Filter chips */
+.defs-chips {
+  display: flex;
+  gap: 6px;
+  overflow-x: auto;
+}
+
+.defs-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;
+}
+
+.defs-chip--active {
+  border-color: #18181d;
+  background: #18181d;
+  color: #fff;
+}
+
+/* Rows */
+.defs-card {
+  background: var(--nq-a-surface);
+  border: 1px solid var(--nq-a-border);
+  border-radius: var(--nq-a-density-radius);
+  overflow: hidden;
+}
+
+.defs-list {
+  margin: 0;
+  padding: 0;
+  list-style: none;
+}
+
+.defs-list > li + li {
+  border-top: 1px solid var(--nq-a-divider);
+}
+
+.defs-row {
+  display: flex;
+  align-items: center;
+  gap: 10px;
+  width: 100%;
+  min-height: var(--nq-a-tap-min);
+  padding: var(--nq-a-density-row-pad);
+  border: 0;
+  background: none;
+  color: var(--nq-a-ink);
+  font-family: inherit;
+  text-align: left;
+  cursor: pointer;
+}
+
+.defs-row-glyph {
+  flex: none;
+  display: flex;
+  color: var(--nq-a-ink-secondary);
+}
+
+.defs-row-text {
+  flex: 1;
+  min-width: 0;
+  display: flex;
+  flex-direction: column;
+}
+
+.defs-row-title {
+  font-size: var(--nq-a-size-row);
+  font-weight: 700;
+}
+
+.defs-row-meta {
+  font-size: var(--nq-a-size-meta);
+  font-weight: 600;
+  color: var(--nq-a-ink-secondary);
+}
+
+.defs-row-chevron {
+  flex: none;
+  display: flex;
+  color: var(--nq-a-ink-tertiary);
+}
+
+/* An inactive definition renders the whole row tertiary (never hard-deleted). */
+.defs-row--inactive,
+.defs-row--inactive .defs-row-glyph,
+.defs-row--inactive .defs-row-meta {
+  color: var(--nq-a-ink-tertiary);
+}
+
+.defs-row--editing {
+  background: var(--nq-a-selected);
+}
+
+.defs-row--editing .defs-row-glyph {
+  color: var(--nq-brand-blue);
+}
+
+.defs-empty {
+  padding: var(--nq-a-density-card-pad);
+  font-size: 13px;
+  font-weight: 600;
+  color: var(--nq-a-ink-secondary);
+}
+
+/* Loading / error */
+.defs-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);
+}
+
+.defs-status--error {
+  color: var(--nq-a-danger-strong);
+}
+
+.defs-status--error p {
+  margin: 0 0 10px;
+}
+
+.defs-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;
+}
+
+/* §3.2 edit sheet */
+.defs-sheet-layer {
+  position: fixed;
+  inset: 0;
+  z-index: 20;
+  display: flex;
+  flex-direction: column;
+  justify-content: flex-end;
+}
+
+.defs-scrim {
+  position: absolute;
+  inset: 0;
+  background: rgba(9, 9, 11, 0.4);
+  animation: defs-fade var(--nq-dur-modal) var(--nq-ease-out);
+}
+
+.defs-sheet {
+  position: relative;
+  width: 100%;
+  max-width: 640px;
+  max-height: 92%;
+  margin: 0 auto;
+  overflow-y: auto;
+  padding: 14px 18px 24px;
+  border-radius: var(--nq-a-radius-sheet);
+  background: var(--nq-a-surface);
+  box-shadow: var(--nq-a-sheet-shadow);
+  animation: defs-rise var(--nq-dur-modal) var(--nq-ease-out);
+}
+
+@keyframes defs-fade {
+  from {
+    opacity: 0;
+  }
+}
+
+@keyframes defs-rise {
+  from {
+    transform: translateY(100%);
+  }
+}
+
+@media (prefers-reduced-motion: reduce) {
+  .defs-scrim,
+  .defs-sheet {
+    animation: none;
+  }
+}
+
+.defs-grabber {
+  width: 38px;
+  height: 4px;
+  margin: 0 auto 12px;
+  border-radius: var(--nq-a-radius-pill);
+  background: var(--nq-a-border);
+}
+
+.defs-sheet-title {
+  margin: 0 0 12px;
+  font-size: 19px;
+  font-weight: 800;
+}
+
+.defs-fields {
+  display: flex;
+  flex-direction: column;
+  gap: 11px;
+}
+
+.defs-field {
+  display: flex;
+  flex-direction: column;
+  gap: 5px;
+}
+
+.defs-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);
+}
+
+.defs-input {
+  width: 100%;
+  min-height: var(--nq-a-tap-min);
+  padding: 0 11px;
+  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: 14px;
+  font-weight: 600;
+}
+
+.defs-select-row {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  min-height: var(--nq-a-tap-min);
+  padding: 0 11px;
+  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: 14px;
+  font-weight: 700;
+  cursor: pointer;
+}
+
+.defs-picker {
+  margin: 0;
+  padding: 0;
+  list-style: none;
+  border: 1px solid var(--nq-a-border);
+  border-radius: var(--nq-a-density-radius);
+}
+
+.defs-picker > li + li {
+  border-top: 1px solid var(--nq-a-divider);
+}
+
+.defs-picker-option {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  width: 100%;
+  min-height: var(--nq-a-tap-min);
+  padding: 0 11px;
+  border: 0;
+  background: none;
+  color: var(--nq-a-ink);
+  font-family: inherit;
+  font-size: 13.5px;
+  font-weight: 700;
+  cursor: pointer;
+}
+
+.defs-picker-check {
+  display: flex;
+  color: var(--nq-brand-blue);
+}
+
+.defs-picker-option--locked {
+  color: var(--nq-a-ink-secondary);
+  cursor: default;
+}
+
+.defs-picker-note {
+  font-size: 12px;
+  font-weight: 600;
+}
+
+.defs-repeats {
+  display: flex;
+  gap: 8px;
+}
+
+.defs-interval {
+  flex: none;
+  display: flex;
+  align-items: center;
+  gap: 6px;
+  font-size: 12px;
+  font-weight: 700;
+  color: var(--nq-a-ink-secondary);
+}
+
+.defs-interval .defs-input {
+  width: 64px;
+}
+
+.defs-weekdays {
+  display: grid;
+  grid-template-columns: repeat(7, 1fr);
+  gap: 4px;
+}
+
+.defs-day,
+.defs-segment {
+  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);
+  font-family: inherit;
+  font-size: 13px;
+  font-weight: 700;
+  cursor: pointer;
+}
+
+.defs-day--on,
+.defs-segment--on {
+  border-color: transparent;
+  background: var(--nq-brand-gradient);
+  color: #fff;
+}
+
+.defs-segmented {
+  display: grid;
+  grid-template-columns: repeat(3, 1fr);
+  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;
+  gap: 6px;
+}
+
+.defs-due {
+  display: grid;
+  grid-template-columns: 84px 1fr;
+  align-items: center;
+  gap: 8px;
+  font-size: 12.5px;
+  font-weight: 700;
+}
+
+.defs-hint {
+  margin: 0;
+  font-size: 12px;
+  font-weight: 600;
+  color: var(--nq-a-ink-secondary);
+}
+
+.defs-toggle-row {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 12px;
+}
+
+.defs-toggle-title {
+  font-size: 13.5px;
+  font-weight: 700;
+}
+
+.defs-toggle-sub {
+  font-size: var(--nq-a-size-meta);
+  font-weight: 600;
+  color: var(--nq-a-ink-secondary);
+}
+
+.defs-switch {
+  flex: none;
+  position: relative;
+  width: 44px;
+  height: 26px;
+  padding: 0;
+  border: 0;
+  border-radius: var(--nq-a-radius-pill);
+  background: var(--nq-a-border);
+  cursor: pointer;
+  transition: background var(--nq-dur-base) var(--nq-ease-out);
+}
+
+.defs-switch--on {
+  background: var(--nq-brand-gradient);
+}
+
+.defs-switch-knob {
+  position: absolute;
+  top: 3px;
+  left: 3px;
+  width: 20px;
+  height: 20px;
+  border-radius: 50%;
+  background: #fff;
+  box-shadow: 0 1px 2px rgba(9, 9, 11, 0.25);
+  transition: transform var(--nq-dur-base) var(--nq-ease-out);
+}
+
+.defs-switch--on .defs-switch-knob {
+  transform: translateX(18px);
+}
+
+.defs-sheet-error {
+  margin: 12px 0 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;
+}
+
+.defs-sheet-footer {
+  display: flex;
+  gap: 8px;
+  margin-top: 16px;
+}
+
+.defs-confirm {
+  margin-top: 12px;
+  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;
+}
+
+.defs-confirm p {
+  margin: 0;
+}
+
+.defs-confirm .defs-sheet-footer {
+  margin-top: 10px;
+}
+
+.defs-cancel,
+.defs-save {
+  padding: 13px 0;
+  border-radius: var(--nq-a-density-radius);
+  font-family: inherit;
+  font-size: 14px;
+  font-weight: 700;
+  cursor: pointer;
+}
+
+.defs-cancel {
+  flex: 1;
+  border: 1px solid var(--nq-a-border);
+  background: var(--nq-a-surface);
+  color: var(--nq-a-ink);
+}
+
+.defs-save {
+  flex: 2;
+  border: 0;
+  background: var(--nq-brand-gradient);
+  color: #fff;
+}
+
+.defs-cancel:disabled,
+.defs-save:disabled {
+  opacity: 0.6;
+  cursor: default;
+}
+
+.defs-preview {
+  margin-top: 8px;
+}
+
+.defs-preview--error {
+  color: var(--nq-a-ink-secondary);
+  font-style: italic;
+}

admin/src/definitions/DefinitionsTab.tsx

@@ -0,0 +1,968 @@
+/**
+ * Definitions ("Tasks") tab — list + edit sheet with icon picker
+ * (design/ADMIN-SPEC.md §3.1–3.3).
+ */
+import {
+  useEffect,
+  useRef,
+  useState,
+  type KeyboardEvent as ReactKeyboardEvent,
+  type ReactNode,
+} from "react";
+import { ApiForbiddenError } from "../api/client";
+import {
+  ApiRequestError,
+  createDefinition,
+  fetchChildren,
+  fetchDefinitions,
+  previewOccurrences,
+  updateDefinition,
+  type AdminChild,
+  type DefinitionCreateBody,
+  type DefinitionEditBody,
+  type DefinitionRule,
+  type QuestDefinition,
+  type WindowEntry,
+  type WindowName,
+} from "../api/definitions";
+import {
+  MONTH_SHORT,
+  WEEKDAY_SHORT,
+  WINDOW_LABELS,
+  WINDOW_ORDER,
+  assigneeSummary,
+  occurrenceLabel,
+  recurrenceSummary,
+  windowSummary,
+} from "./format";
+import {
+  CheckGlyph,
+  ChevronDownGlyph,
+  ChevronRightGlyph,
+  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. */
+export const SCROLL_BOTTOM_PADDING = "92px";
+
+type Repeats = "daily" | "weekly" | "monthly" | "yearly" | "custom";
+
+const REPEATS_OPTIONS: { value: Repeats; label: string }[] = [
+  { value: "daily", label: "Daily" },
+  { value: "weekly", label: "Weekly" },
+  { value: "monthly", label: "Monthly" },
+  { value: "yearly", label: "Yearly" },
+  { value: "custom", label: "Custom" },
+];
+
+const REPEATS_BY_RULE: Record<DefinitionRule["rule_type"], Repeats> = {
+  daily: "daily",
+  weekly: "weekly",
+  monthly_day: "monthly",
+  monthly_weekday: "monthly",
+  yearly: "yearly",
+  custom_days: "custom",
+};
+
+/** How many upcoming dates the edit sheet previews. */
+const PREVIEW_COUNT = 5;
+
+/** Quiet period after the last rule edit before the preview is requested. */
+const PREVIEW_DEBOUNCE_MS = 300;
+
+const WEEKDAY_LONG = ["Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday"];
+
+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;
+  weekdays: number[];
+  dayOfMonth: string;
+  month: string;
+  /** An existing "nth weekday" monthly rule, kept while Repeats stays Monthly. */
+  monthlyWeekday: { nth: number; weekday: number } | null;
+  windows: WindowName[];
+  dueTimes: Record<WindowName, string>;
+  skipOnAway: boolean;
+  startDate: string;
+  endDate: string | null;
+}
+
+type LoadState =
+  | { kind: "loading" }
+  | { kind: "error"; message: string }
+  | { kind: "ready"; definitions: QuestDefinition[]; children: AdminChild[] };
+
+/** `null` = closed, `"new"` = creating, a definition = editing it. */
+type SheetTarget = null | "new" | QuestDefinition;
+
+function pad2(n: number): string {
+  return String(n).padStart(2, "0");
+}
+
+function localIsoDate(date: Date): string {
+  return `${date.getFullYear()}-${pad2(date.getMonth() + 1)}-${pad2(date.getDate())}`;
+}
+
+function emptyDueTimes(): Record<WindowName, string> {
+  return { morning: "", afternoon: "", evening: "" };
+}
+
+function newDraft(activeChildren: AdminChild[]): Draft {
+  const today = new Date();
+  return {
+    title: "",
+    icon: null,
+    assigneeIds: activeChildren.length === 1 ? [activeChildren[0].id] : [],
+    repeats: "daily",
+    interval: "1",
+    weekdays: [(today.getDay() + 6) % 7],
+    dayOfMonth: String(today.getDate()),
+    month: String(today.getMonth() + 1),
+    monthlyWeekday: null,
+    windows: [],
+    dueTimes: emptyDueTimes(),
+    // Mirrors the API's create default: no instance on an away day.
+    skipOnAway: true,
+    startDate: localIsoDate(today),
+    endDate: null,
+  };
+}
+
+function draftFrom(definition: QuestDefinition, activeChildren: AdminChild[]): Draft {
+  const { rule } = definition;
+  const today = new Date();
+  const active = new Set(activeChildren.map((child) => child.id));
+  const dueTimes = emptyDueTimes();
+  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],
+    interval: String(rule.interval),
+    weekdays:
+      rule.rule_type === "weekly" || rule.rule_type === "custom_days"
+        ? [...(rule.weekday_set ?? [])]
+        : [(today.getDay() + 6) % 7],
+    dayOfMonth: String(rule.day_of_month ?? today.getDate()),
+    month: String(rule.month ?? today.getMonth() + 1),
+    monthlyWeekday:
+      rule.rule_type === "monthly_weekday"
+        ? { nth: rule.nth_weekday ?? 1, weekday: rule.nth_weekday_weekday ?? 0 }
+        : null,
+    windows: WINDOW_ORDER.filter((w) => definition.windows.some((d) => d.window === w)),
+    dueTimes,
+    skipOnAway: definition.skip_on_away,
+    startDate: rule.start_date,
+    endDate: rule.end_date,
+  };
+}
+
+function parseWhole(value: string, min: number, max: number): number | null {
+  if (!/^\d+$/.test(value.trim())) return null;
+  const n = Number(value);
+  return n >= min && n <= max ? n : null;
+}
+
+/** Build the request rule from the draft, or return a message naming what to fix. */
+function buildRule(draft: Draft): DefinitionRule | string {
+  const interval = parseWhole(draft.interval, 1, 999);
+  if (interval === null) return "Interval must be a whole number of at least 1.";
+  const rule: DefinitionRule = {
+    rule_type: "daily",
+    interval,
+    weekday_set: null,
+    day_of_month: null,
+    nth_weekday: null,
+    nth_weekday_weekday: null,
+    month: null,
+    start_date: draft.startDate,
+    end_date: draft.endDate,
+  };
+  switch (draft.repeats) {
+    case "daily":
+      return rule;
+    case "weekly":
+    case "custom":
+      if (draft.weekdays.length === 0) return "Pick at least one day.";
+      return {
+        ...rule,
+        rule_type: draft.repeats === "weekly" ? "weekly" : "custom_days",
+        weekday_set: [...draft.weekdays].sort((a, b) => a - b),
+      };
+    case "monthly": {
+      if (draft.monthlyWeekday) {
+        return {
+          ...rule,
+          rule_type: "monthly_weekday",
+          nth_weekday: draft.monthlyWeekday.nth,
+          nth_weekday_weekday: draft.monthlyWeekday.weekday,
+        };
+      }
+      const day = parseWhole(draft.dayOfMonth, 1, 31);
+      if (day === null) return "Day of month must be 1 to 31.";
+      return { ...rule, rule_type: "monthly_day", day_of_month: day };
+    }
+    case "yearly": {
+      const month = parseWhole(draft.month, 1, 12);
+      const day = parseWhole(draft.dayOfMonth, 1, 31);
+      if (month === null || day === null) return "Pick a month and a day (1 to 31).";
+      return { ...rule, rule_type: "yearly", month, day_of_month: day };
+    }
+  }
+}
+
+/**
+ * `keepsAssignees`: an edit whose active selection is unchanged sends no
+ * assignee list, so an empty selection is fine when inactive children remain.
+ */
+function buildBody(draft: Draft, keepsAssignees = false): DefinitionCreateBody | string {
+  const title = draft.title.trim();
+  if (!title) return "Give the task a title.";
+  if (draft.assigneeIds.length === 0 && !keepsAssignees) return "Assign at least one child.";
+  if (draft.windows.length === 0) return "Pick at least one window.";
+  const rule = buildRule(draft);
+  if (typeof rule === "string") return rule;
+  const windows: WindowEntry[] = WINDOW_ORDER.filter((w) => draft.windows.includes(w)).map(
+    (w) => [w, draft.dueTimes[w] || null],
+  );
+  return {
+    title,
+    icon: draft.icon,
+    rule,
+    assignee_child_ids: [...draft.assigneeIds],
+    windows,
+    skip_on_away: draft.skipOnAway,
+  };
+}
+
+function saveErrorMessage(error: unknown): string {
+  if (error instanceof ApiForbiddenError) return error.message;
+  if (error instanceof ApiRequestError && error.detail) return error.detail;
+  return "The task could not be saved. Check your connection and try again.";
+}
+
+function toggle<T>(list: T[], value: T): T[] {
+  return list.includes(value) ? list.filter((item) => item !== value) : [...list, value];
+}
+
+function sameIds(a: number[], b: number[]): boolean {
+  return a.length === b.length && a.every((id) => b.includes(id));
+}
+
+const FOCUSABLE =
+  'button:not([disabled]), input:not([disabled]), select:not([disabled]), textarea:not([disabled]), [href], [tabindex]:not([tabindex="-1"])';
+
+/* ── List ───────────────────────────────────────────────────────────── */
+
+function FilterChips({
+  options,
+  filter,
+  onChange,
+}: {
+  options: AdminChild[];
+  filter: number | "all";
+  onChange: (filter: number | "all") => void;
+}) {
+  const chips: { key: number | "all"; label: string }[] = [
+    { key: "all", label: "All" },
+    ...options.map((child) => ({ key: child.id, label: child.display_name })),
+  ];
+  return (
+    <div className="defs-chips" role="group" aria-label="Filter by child">
+      {chips.map((chip) => (
+        <button
+          key={chip.key}
+          type="button"
+          className={chip.key === filter ? "defs-chip defs-chip--active" : "defs-chip"}
+          aria-pressed={chip.key === filter}
+          onClick={() => onChange(chip.key)}
+        >
+          {chip.label}
+        </button>
+      ))}
+    </div>
+  );
+}
+
+function DefinitionRow({
+  definition,
+  activeChildren,
+  editing,
+  onOpen,
+}: {
+  definition: QuestDefinition;
+  activeChildren: AdminChild[];
+  editing: boolean;
+  onOpen: () => void;
+}) {
+  let meta = [
+    assigneeSummary(definition.assignees, activeChildren),
+    recurrenceSummary(definition.rule),
+    windowSummary(definition.windows),
+  ].join(" · ");
+  if (!definition.is_active) meta += " · inactive";
+  let className = "defs-row";
+  if (!definition.is_active) className += " defs-row--inactive";
+  if (editing) className += " defs-row--editing";
+  return (
+    <li>
+      <button
+        type="button"
+        className={className}
+        data-testid={`definition-${definition.id}`}
+        aria-expanded={editing}
+        onClick={onOpen}
+      >
+        <span className="defs-row-glyph">
+          <DefinitionIcon name={definition.icon} />
+        </span>
+        <span className="defs-row-text">
+          <span className="defs-row-title">{definition.title}</span>
+          <span className="defs-row-meta">{editing ? "Editing" : meta}</span>
+        </span>
+        <span className="defs-row-chevron">
+          {editing ? <ChevronDownGlyph /> : <ChevronRightGlyph />}
+        </span>
+      </button>
+    </li>
+  );
+}
+
+/* ── Edit sheet ─────────────────────────────────────────────────────── */
+
+type PreviewState =
+  | { kind: "idle" }
+  | { kind: "ready"; ruleKey: string; dates: string[] }
+  | { kind: "error"; ruleKey: string; message: string };
+
+/**
+ * The next few dates the backend would materialize for the draft's rule.
+ * `ruleKey` is the built rule serialized (null while the draft is invalid), so
+ * the request only goes out when the rule itself changes — debounced, and a
+ * superseded request's late response is dropped by its effect's cleanup.
+ * A result is tagged with the rule it answers and only shown while that rule
+ * is still the draft's, so a changed rule never shows the previous dates.
+ */
+function OccurrencePreview({ ruleKey }: { ruleKey: string | null }) {
+  const [preview, setPreview] = useState<PreviewState>({ kind: "idle" });
+
+  useEffect(() => {
+    if (ruleKey === null) {
+      setPreview({ kind: "idle" });
+      return;
+    }
+    let cancelled = false;
+    const timer = setTimeout(() => {
+      previewOccurrences(JSON.parse(ruleKey) as DefinitionRule, { count: PREVIEW_COUNT })
+        .then((dates) => {
+          if (!cancelled) setPreview({ kind: "ready", ruleKey, dates });
+        })
+        .catch((error: unknown) => {
+          if (cancelled) return;
+          const detail =
+            error instanceof ApiForbiddenError ||
+            (error instanceof ApiRequestError && error.detail)
+              ? `: ${error.message}`
+              : ".";
+          setPreview({
+            kind: "error",
+            ruleKey,
+            message: `Upcoming dates unavailable${detail}`,
+          });
+        });
+    }, PREVIEW_DEBOUNCE_MS);
+    return () => {
+      cancelled = true;
+      clearTimeout(timer);
+    };
+  }, [ruleKey]);
+
+  if (preview.kind === "idle" || preview.ruleKey !== ruleKey) return null;
+  if (preview.kind === "error") {
+    return (
+      <p className="defs-hint defs-preview defs-preview--error" data-testid="occurrence-preview">
+        {preview.message}
+      </p>
+    );
+  }
+  let text: string;
+  if (preview.dates.length === 0) {
+    text = "No upcoming dates in the next year.";
+  } else {
+    const labels = preview.dates.map(occurrenceLabel);
+    // A full page means the rule keeps going past the last shown date.
+    if (preview.dates.length >= PREVIEW_COUNT) labels.push("…");
+    text = `Next: ${labels.join(" · ")}`;
+  }
+  return (
+    <p className="defs-hint defs-preview" data-testid="occurrence-preview" aria-live="polite">
+      {text}
+    </p>
+  );
+}
+
+function Field({ label, id, children }: { label: string; id: string; children: ReactNode }) {
+  return (
+    <div className="defs-field" role="group" aria-labelledby={id}>
+      <span className="defs-label" id={id}>
+        {label}
+      </span>
+      {children}
+    </div>
+  );
+}
+
+function EditSheet({
+  target,
+  activeChildren,
+  onCancel,
+  onSaved,
+}: {
+  target: "new" | QuestDefinition;
+  activeChildren: AdminChild[];
+  onCancel: () => void;
+  onSaved: () => void;
+}) {
+  const [draft, setDraft] = useState<Draft>(() =>
+    target === "new" ? newDraft(activeChildren) : draftFrom(target, activeChildren),
+  );
+  // The active selection as loaded: while it is unchanged, the PATCH omits
+  // assignee_child_ids, because the API replaces the whole set and inactive
+  // children cannot be sent back.
+  const [originalActiveIds] = useState(() => draft.assigneeIds);
+  const inactiveAssignees =
+    target === "new"
+      ? []
+      : target.assignees.filter((a) => !activeChildren.some((child) => child.id === a.id));
+  const [pickerOpen, setPickerOpen] = useState(false);
+  const [saving, setSaving] = useState(false);
+  const [confirming, setConfirming] = useState(false);
+  const [error, setError] = useState<string | null>(null);
+  // A ref, not state: two taps in one frame must not both see `saving === false`.
+  const inFlight = useRef(false);
+  const sheetRef = useRef<HTMLDivElement>(null);
+  const titleRef = useRef<HTMLHeadingElement>(null);
+  const confirmRef = useRef<HTMLDivElement>(null);
+
+  // Modal focus: move in on open, hand back to the trigger on close.
+  useEffect(() => {
+    const trigger = document.activeElement as HTMLElement | null;
+    titleRef.current?.focus();
+    return () => {
+      if (trigger && trigger.isConnected) trigger.focus();
+    };
+  }, []);
+
+  useEffect(() => {
+    if (confirming) confirmRef.current?.focus();
+  }, [confirming]);
+
+  function onKeyDown(event: ReactKeyboardEvent<HTMLDivElement>) {
+    if (event.key === "Escape") {
+      event.preventDefault();
+      if (!inFlight.current) onCancel();
+      return;
+    }
+    if (event.key !== "Tab" || !sheetRef.current) return;
+    const focusable = Array.from(sheetRef.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 update = (patch: Partial<Draft>) => setDraft((d) => ({ ...d, ...patch }));
+
+  const selectedAssignees = activeChildren
+    .filter((child) => draft.assigneeIds.includes(child.id))
+    .map((child) => ({ id: child.id, display_name: child.display_name }));
+  const orderedWindows = WINDOW_ORDER.filter((w) => draft.windows.includes(w));
+  const previewRule = buildRule(draft);
+  const previewKey = typeof previewRule === "string" ? null : JSON.stringify(previewRule);
+
+  async function save(confirmed = false) {
+    if (inFlight.current) return;
+    const keepsAssignees = target !== "new" && sameIds(draft.assigneeIds, originalActiveIds);
+    const body = buildBody(draft, keepsAssignees);
+    if (typeof body === "string") {
+      setError(body);
+      setConfirming(false);
+      return;
+    }
+    if (target !== "new" && !keepsAssignees && inactiveAssignees.length > 0 && !confirmed) {
+      setError(null);
+      setConfirming(true);
+      return;
+    }
+    setConfirming(false);
+    inFlight.current = true;
+    setSaving(true);
+    setError(null);
+    try {
+      if (target === "new") {
+        await createDefinition(body);
+      } else {
+        const edit: DefinitionEditBody = { ...body };
+        if (keepsAssignees) delete edit.assignee_child_ids;
+        await updateDefinition(target.id, edit);
+      }
+      onSaved();
+    } catch (err) {
+      setError(saveErrorMessage(err));
+      inFlight.current = false;
+      setSaving(false);
+    }
+  }
+
+  return (
+    <div className="defs-sheet-layer">
+      <div
+        className="defs-scrim"
+        data-testid="sheet-scrim"
+        onClick={() => {
+          if (!inFlight.current) onCancel();
+        }}
+      />
+      <div
+        ref={sheetRef}
+        className="defs-sheet"
+        role="dialog"
+        aria-modal="true"
+        aria-labelledby="defs-sheet-title"
+        onKeyDown={onKeyDown}
+      >
+        <div className="defs-grabber" aria-hidden="true" />
+        <h3 className="defs-sheet-title" id="defs-sheet-title" ref={titleRef} tabIndex={-1}>
+          {target === "new" ? "New task" : "Edit task"}
+        </h3>
+        <div className="defs-fields">
+          <Field label="Title" id="defs-label-title">
+            <input
+              className="defs-input"
+              aria-labelledby="defs-label-title"
+              value={draft.title}
+              onChange={(e) => update({ title: e.target.value })}
+            />
+          </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"
+              className="defs-select-row"
+              aria-expanded={pickerOpen}
+              aria-labelledby="defs-label-children defs-children-summary"
+              onClick={() => setPickerOpen((open) => !open)}
+            >
+              <span id="defs-children-summary">
+                {selectedAssignees.length > 0
+                  ? assigneeSummary(selectedAssignees, activeChildren)
+                  : "Choose children"}
+              </span>
+              {pickerOpen ? <ChevronDownGlyph /> : <ChevronRightGlyph />}
+            </button>
+            {pickerOpen ? (
+              <ul className="defs-picker" aria-label="Children">
+                {activeChildren.map((child) => {
+                  const checked = draft.assigneeIds.includes(child.id);
+                  return (
+                    <li key={child.id}>
+                      <button
+                        type="button"
+                        role="checkbox"
+                        aria-checked={checked}
+                        className="defs-picker-option"
+                        onClick={() => update({ assigneeIds: toggle(draft.assigneeIds, child.id) })}
+                      >
+                        <span>{child.display_name}</span>
+                        <span className="defs-picker-check">{checked ? <CheckGlyph /> : null}</span>
+                      </button>
+                    </li>
+                  );
+                })}
+                {inactiveAssignees.map((assignee) => (
+                  <li
+                    key={assignee.id}
+                    className="defs-picker-option defs-picker-option--locked"
+                    aria-disabled="true"
+                    data-testid={`inactive-assignee-${assignee.id}`}
+                  >
+                    <span>{assignee.display_name}</span>
+                    <span className="defs-picker-note">Inactive</span>
+                  </li>
+                ))}
+              </ul>
+            ) : null}
+            {inactiveAssignees.length > 0 ? (
+              <p className="defs-hint">
+                Also assigned (inactive): {inactiveAssignees.map((a) => a.display_name).join(", ")}.
+                Kept unless you change the selection.
+              </p>
+            ) : null}
+          </Field>
+
+          <Field label="Repeats" id="defs-label-repeats">
+            <div className="defs-repeats">
+              <select
+                className="defs-input"
+                aria-label="Repeats"
+                value={draft.repeats}
+                onChange={(e) =>
+                  update({
+                    repeats: e.target.value as Repeats,
+                    // Leaving Monthly drops a carried nth-weekday rule for good.
+                    monthlyWeekday: e.target.value === "monthly" ? draft.monthlyWeekday : null,
+                  })
+                }
+              >
+                {REPEATS_OPTIONS.map((option) => (
+                  <option key={option.value} value={option.value}>
+                    {option.label}
+                  </option>
+                ))}
+              </select>
+              <label className="defs-interval">
+                <span>Every</span>
+                <input
+                  className="defs-input"
+                  type="number"
+                  min={1}
+                  aria-label="Interval"
+                  value={draft.interval}
+                  onChange={(e) => update({ interval: e.target.value })}
+                />
+              </label>
+            </div>
+            {draft.repeats === "weekly" || draft.repeats === "custom" ? (
+              <div className="defs-weekdays" role="group" aria-label="Days">
+                {WEEKDAY_SHORT.map((label, day) => (
+                  <button
+                    key={label}
+                    type="button"
+                    aria-pressed={draft.weekdays.includes(day)}
+                    aria-label={WEEKDAY_LONG[day]}
+                    className={
+                      draft.weekdays.includes(day) ? "defs-day defs-day--on" : "defs-day"
+                    }
+                    onClick={() => update({ weekdays: toggle(draft.weekdays, day) })}
+                  >
+                    {label.charAt(0)}
+                  </button>
+                ))}
+              </div>
+            ) : null}
+            {draft.repeats === "monthly" && draft.monthlyWeekday ? (
+              <p className="defs-hint">
+                {recurrenceSummary({
+                  rule_type: "monthly_weekday",
+                  interval: parseWhole(draft.interval, 1, 999) ?? 1,
+                  weekday_set: null,
+                  day_of_month: null,
+                  nth_weekday: draft.monthlyWeekday.nth,
+                  nth_weekday_weekday: draft.monthlyWeekday.weekday,
+                  month: null,
+                  start_date: draft.startDate,
+                  end_date: draft.endDate,
+                })}
+              </p>
+            ) : null}
+            {draft.repeats === "yearly" ? (
+              <select
+                className="defs-input"
+                aria-label="Month"
+                value={draft.month}
+                onChange={(e) => update({ month: e.target.value })}
+              >
+                {MONTH_SHORT.map((label, index) => (
+                  <option key={label} value={String(index + 1)}>
+                    {label}
+                  </option>
+                ))}
+              </select>
+            ) : null}
+            {(draft.repeats === "monthly" && !draft.monthlyWeekday) || draft.repeats === "yearly" ? (
+              <input
+                className="defs-input"
+                type="number"
+                min={1}
+                max={31}
+                aria-label="Day of month"
+                value={draft.dayOfMonth}
+                onChange={(e) => update({ dayOfMonth: e.target.value })}
+              />
+            ) : null}
+            <OccurrencePreview ruleKey={previewKey} />
+          </Field>
+
+          <Field label="Due time" id="defs-label-due">
+            {orderedWindows.length === 0 ? (
+              <p className="defs-hint">Pick a window to set its due time.</p>
+            ) : (
+              <div className="defs-due-times">
+                {orderedWindows.map((w) => (
+                  <label key={w} className="defs-due">
+                    <span>{WINDOW_LABELS[w]}</span>
+                    <input
+                      className="defs-input"
+                      type="time"
+                      aria-label={`${WINDOW_LABELS[w]} due time`}
+                      value={draft.dueTimes[w]}
+                      onChange={(e) =>
+                        update({ dueTimes: { ...draft.dueTimes, [w]: e.target.value } })
+                      }
+                    />
+                  </label>
+                ))}
+              </div>
+            )}
+          </Field>
+
+          <Field label="Window" id="defs-label-window">
+            <div className="defs-segmented">
+              {WINDOW_ORDER.map((w) => (
+                <button
+                  key={w}
+                  type="button"
+                  aria-pressed={draft.windows.includes(w)}
+                  className={
+                    draft.windows.includes(w) ? "defs-segment defs-segment--on" : "defs-segment"
+                  }
+                  onClick={() => update({ windows: toggle(draft.windows, w) })}
+                >
+                  {WINDOW_LABELS[w]}
+                </button>
+              ))}
+            </div>
+          </Field>
+
+          <div className="defs-toggle-row">
+            <div>
+              <div className="defs-toggle-title" id="defs-label-skip">
+                Skip on away days
+              </div>
+              <div className="defs-toggle-sub">No instance when the child is absent</div>
+            </div>
+            <button
+              type="button"
+              role="switch"
+              aria-checked={draft.skipOnAway}
+              aria-labelledby="defs-label-skip"
+              className={draft.skipOnAway ? "defs-switch defs-switch--on" : "defs-switch"}
+              onClick={() => update({ skipOnAway: !draft.skipOnAway })}
+            >
+              <span className="defs-switch-knob" />
+            </button>
+          </div>
+        </div>
+
+        {error ? (
+          <p className="defs-sheet-error" role="alert" data-testid="sheet-error">
+            {error}
+          </p>
+        ) : null}
+
+        {confirming ? (
+          <div
+            className="defs-confirm"
+            role="group"
+            aria-labelledby="defs-confirm-text"
+            data-testid="unassign-confirm"
+            ref={confirmRef}
+            tabIndex={-1}
+          >
+            <p id="defs-confirm-text">
+              Saving will unassign{" "}
+              {inactiveAssignees.map((a) => a.display_name).join(", ")}. Inactive children can't be
+              assigned again until they are reactivated.
+            </p>
+            <div className="defs-sheet-footer">
+              <button type="button" className="defs-cancel" onClick={() => setConfirming(false)}>
+                Go back
+              </button>
+              <button type="button" className="defs-save" onClick={() => save(true)}>
+                Unassign and save
+              </button>
+            </div>
+          </div>
+        ) : (
+          <div className="defs-sheet-footer">
+            <button type="button" className="defs-cancel" onClick={onCancel} disabled={saving}>
+              Cancel
+            </button>
+            <button type="button" className="defs-save" onClick={() => save()} disabled={saving}>
+              {saving ? "Saving…" : "Save changes"}
+            </button>
+          </div>
+        )}
+      </div>
+    </div>
+  );
+}
+
+/* ── Screen ─────────────────────────────────────────────────────────── */
+
+export default function DefinitionsTab() {
+  const [state, setState] = useState<LoadState>({ kind: "loading" });
+  const [attempt, setAttempt] = useState(0);
+  const [filter, setFilter] = useState<number | "all">("all");
+  const [sheet, setSheet] = useState<SheetTarget>(null);
+
+  useEffect(() => {
+    let cancelled = false;
+    // Keep the list on screen during a post-save re-fetch; spin only on first load.
+    setState((current) => (current.kind === "ready" ? current : { kind: "loading" }));
+    Promise.all([fetchDefinitions(), fetchChildren()])
+      .then(([definitions, children]) => {
+        if (!cancelled) setState({ kind: "ready", definitions, children });
+      })
+      .catch((error: unknown) => {
+        if (cancelled) return;
+        const message =
+          error instanceof ApiForbiddenError
+            ? error.message
+            : "Tasks could not be loaded. Check your connection and try again.";
+        setState({ kind: "error", message });
+      });
+    return () => {
+      cancelled = true;
+    };
+  }, [attempt]);
+
+  const activeChildren =
+    state.kind === "ready"
+      ? [...state.children]
+          .filter((child) => child.is_active)
+          .sort((a, b) => a.sort_order - b.sort_order)
+      : [];
+
+  let sub = "";
+  let body;
+  if (state.kind === "loading") {
+    body = (
+      <div className="defs-status" role="status" data-testid="definitions-loading">
+        Loading tasks…
+      </div>
+    );
+  } else if (state.kind === "error") {
+    body = (
+      <div className="defs-status defs-status--error" role="alert" data-testid="definitions-error">
+        <p>{state.message}</p>
+        <button type="button" className="defs-retry" onClick={() => setAttempt((n) => n + 1)}>
+          Try again
+        </button>
+      </div>
+    );
+  } else {
+    const { definitions } = state;
+    sub = `${definitions.length} definitions · ${activeChildren.length} children`;
+    const shown =
+      filter === "all"
+        ? definitions
+        : definitions.filter((d) => d.assignees.some((a) => a.id === filter));
+    const editingId = sheet !== null && sheet !== "new" ? sheet.id : null;
+    body = (
+      <>
+        <FilterChips options={activeChildren} filter={filter} onChange={setFilter} />
+        {shown.length > 0 ? (
+          <ul className="defs-card defs-list" aria-label="Task definitions">
+            {shown.map((definition) => (
+              <DefinitionRow
+                key={definition.id}
+                definition={definition}
+                activeChildren={activeChildren}
+                editing={definition.id === editingId}
+                onOpen={() => setSheet(definition)}
+              />
+            ))}
+          </ul>
+        ) : (
+          <div className="defs-card defs-empty">No tasks yet.</div>
+        )}
+      </>
+    );
+  }
+
+  return (
+    <div className="defs-screen">
+      <header className="defs-header">
+        <div>
+          <h2 className="defs-title">Tasks</h2>
+          <p className="defs-sub">{sub}</p>
+        </div>
+        <button
+          type="button"
+          className="defs-new"
+          disabled={state.kind !== "ready"}
+          onClick={() => setSheet("new")}
+        >
+          <PlusGlyph />
+          New
+        </button>
+      </header>
+      <div
+        className="defs-scroll"
+        data-testid="definitions-scroll"
+        style={{ paddingBottom: SCROLL_BOTTOM_PADDING }}
+      >
+        {body}
+      </div>
+      {sheet !== null && state.kind === "ready" ? (
+        <EditSheet
+          key={sheet === "new" ? "new" : sheet.id}
+          target={sheet}
+          activeChildren={activeChildren}
+          onCancel={() => setSheet(null)}
+          onSaved={() => {
+            setSheet(null);
+            setAttempt((n) => n + 1);
+          }}
+        />
+      ) : null}
+    </div>
+  );
+}

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/definitions/format.ts

@@ -0,0 +1,111 @@
+/**
+ * List-row summaries for the Definitions tab (ADMIN-SPEC §3.1):
+ * `<assignees> · <recurrence> · <windows>`.
+ */
+import type {
+  AdminChild,
+  DefinitionAssignee,
+  DefinitionRule,
+  DefinitionWindow,
+  WindowName,
+} from "../api/definitions";
+
+export const WINDOW_ORDER: WindowName[] = ["morning", "afternoon", "evening"];
+
+export const WINDOW_LABELS: Record<WindowName, string> = {
+  morning: "Morning",
+  afternoon: "Afternoon",
+  evening: "Evening",
+};
+
+/** Index 0 = Monday .. 6 = Sunday, the core's weekday numbering. */
+export const WEEKDAY_SHORT = ["Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun"];
+
+export const MONTH_SHORT = [
+  "Jan", "Feb", "Mar", "Apr", "May", "Jun",
+  "Jul", "Aug", "Sep", "Oct", "Nov", "Dec",
+];
+
+const COUNT_WORDS = ["zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine", "ten"];
+
+/**
+ * `Declan`, `Declan, Maeve`, or `All three` when every active child (two or
+ * more) is assigned.
+ */
+export function assigneeSummary(
+  assignees: Pick<DefinitionAssignee, "id" | "display_name">[],
+  activeChildren: AdminChild[],
+): string {
+  if (assignees.length === 0) return "Unassigned";
+  const assigned = new Set(assignees.map((a) => a.id));
+  const everyone =
+    activeChildren.length > 1 &&
+    assigned.size === activeChildren.length &&
+    activeChildren.every((child) => assigned.has(child.id));
+  if (everyone) {
+    const word = COUNT_WORDS[activeChildren.length] ?? String(activeChildren.length);
+    return `All ${word}`;
+  }
+  return assignees.map((a) => a.display_name).join(", ");
+}
+
+function weekdayList(days: number[] | null): string {
+  return [...(days ?? [])]
+    .sort((a, b) => a - b)
+    .map((day) => WEEKDAY_SHORT[day])
+    .join(", ");
+}
+
+function ordinal(n: number): string {
+  if (n === -1) return "last";
+  const suffix = n === 1 ? "st" : n === 2 ? "nd" : n === 3 ? "rd" : "th";
+  return `${n}${suffix}`;
+}
+
+function every(interval: number, one: string, unit: string): string {
+  return interval === 1 ? one : `Every ${interval} ${unit}`;
+}
+
+export function recurrenceSummary(rule: DefinitionRule): string {
+  const n = rule.interval;
+  switch (rule.rule_type) {
+    case "daily":
+      return every(n, "Daily", "days");
+    case "weekly":
+      return `${every(n, "Weekly", "weeks")} on ${weekdayList(rule.weekday_set)}`;
+    case "monthly_day":
+      return `${every(n, "Monthly", "months")} on day ${rule.day_of_month}`;
+    case "monthly_weekday":
+      return `${every(n, "Monthly", "months")} on the ${ordinal(rule.nth_weekday ?? 1)} ${
+        WEEKDAY_SHORT[rule.nth_weekday_weekday ?? 0]
+      }`;
+    case "yearly": {
+      const month = MONTH_SHORT[(rule.month ?? 1) - 1];
+      const when = rule.day_of_month ? `on ${month} ${rule.day_of_month}` : `in ${month}`;
+      return `${every(n, "Yearly", "years")} ${when}`;
+    }
+    case "custom_days":
+      return `Custom${n === 1 ? "" : ` every ${n} weeks`} (${weekdayList(rule.weekday_set)})`;
+  }
+}
+
+export function windowSummary(windows: Pick<DefinitionWindow, "window">[]): string {
+  const names = new Set(windows.map((w) => w.window));
+  return WINDOW_ORDER.filter((w) => names.has(w))
+    .map((w) => WINDOW_LABELS[w])
+    .join(", ");
+}
+
+/**
+ * "2026-10-06" -> "Tue 6 Oct". The calendar date is read by its components
+ * and its weekday taken in UTC (as the Today tab does), so the printed day
+ * never shifts with the viewer's offset — `new Date("YYYY-MM-DD")` would.
+ */
+export function occurrenceLabel(iso: string): string {
+  const match = /^(\d{4})-(\d{2})-(\d{2})$/.exec(iso);
+  if (!match) throw new Error(`Invalid calendar date: ${iso}`);
+  const [, year, month, day] = match.map(Number);
+  const date = new Date(Date.UTC(year, month - 1, day));
+  // getUTCDay: 0 = Sunday; WEEKDAY_SHORT: 0 = Monday.
+  return `${WEEKDAY_SHORT[(date.getUTCDay() + 6) % 7]} ${day} ${MONTH_SHORT[month - 1]}`;
+}

admin/src/definitions/glyphs.tsx

@@ -0,0 +1,67 @@
+/**
+ * Inline stroke glyphs for the Definitions tab (Lucide-style 24px grid),
+ * CDN-free like the Today tab's. Definition icons arrive with the icon
+ * picker task; until then every row carries the generic task glyph.
+ */
+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 TaskGlyph({ size = 17 }: { size?: number }) {
+  return (
+    <Glyph size={size}>
+      <rect x="8" y="2" width="8" height="4" rx="1" />
+      <path d="M16 4h2a2 2 0 0 1 2 2v14a2 2 0 0 1-2 2H6a2 2 0 0 1-2-2V6a2 2 0 0 1 2-2h2" />
+      <path d="m9 14 2 2 4-4" />
+    </Glyph>
+  );
+}
+
+export function PlusGlyph({ size = 16 }: { size?: number }) {
+  return (
+    <Glyph size={size}>
+      <path d="M12 5v14M5 12h14" />
+    </Glyph>
+  );
+}
+
+export function ChevronRightGlyph({ size = 16 }: { size?: number }) {
+  return (
+    <Glyph size={size}>
+      <path d="m9 18 6-6-6-6" />
+    </Glyph>
+  );
+}
+
+export function ChevronDownGlyph({ size = 16 }: { size?: number }) {
+  return (
+    <Glyph size={size}>
+      <path d="m6 9 6 6 6-6" />
+    </Glyph>
+  );
+}
+
+export function CheckGlyph({ size = 16 }: { size?: number }) {
+  return (
+    <Glyph size={size}>
+      <path d="M20 6 9 17l-5-5" />
+    </Glyph>
+  );
+}

admin/src/index.css

@@ -0,0 +1,74 @@
+/* NestQuest Admin — global tokens + base.
+   Plain CubeCraft styling, mobile-first, 390x844 reference
+   (design/ADMIN-SPEC.md). Values mirror design/tokens/nestquest-admin-tokens.css,
+   re-scoped to :root for the standalone PWA. */
+
+:root {
+  --nq-brand-blue: #3b3ab8;
+  --nq-brand-purple: #a035cc;
+  --nq-brand-gradient: linear-gradient(135deg, var(--nq-brand-blue), var(--nq-brand-purple));
+  --nq-brand-gradient-h: linear-gradient(90deg, var(--nq-brand-blue), var(--nq-brand-purple));
+
+  --nq-a-page: #f4f4f6;
+  --nq-a-surface: #ffffff;
+  --nq-a-selected: #ebebf8;
+  --nq-a-border: #e4e4ea;
+  --nq-a-divider: #ededf1;
+
+  --nq-a-ink: #18181d;
+  --nq-a-ink-secondary: #52525e;
+  --nq-a-ink-tertiary: #70707e;
+
+  --nq-a-success: #15803d;
+  --nq-a-danger: #dc2626;
+  --nq-a-danger-strong: #b91c1c;
+  --nq-a-danger-bg: #fee2e2;
+  --nq-a-warning-ink: #92400e;
+  --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-font: Nunito, system-ui, sans-serif;
+  --nq-a-size-screen: 24px;
+  --nq-a-size-stat: 22px;
+  --nq-a-size-row: 13.5px;
+  --nq-a-size-meta: 11px;
+  --nq-a-size-label: 10px;
+  --nq-a-track-label: 0.1em;
+
+  --nq-a-density-gap: 10px;
+  --nq-a-density-card-pad: 13px;
+  --nq-a-density-row-pad: 11px 13px;
+  --nq-a-density-radius: 8px;
+
+  --nq-a-tabbar-height: 70px;
+  --nq-a-tap-min: 44px;
+  --nq-a-radius-pill: 9999px;
+  --nq-a-radius-sheet: 20px 20px 0 0;
+  --nq-a-sheet-shadow: 0 -8px 28px rgba(9, 9, 11, 0.18);
+  --nq-a-progress-height: 6px;
+
+  --nq-ease-out: cubic-bezier(0, 0, 0.2, 1);
+  --nq-dur-base: 200ms;
+  --nq-dur-modal: 350ms;
+}
+
+* {
+  box-sizing: border-box;
+}
+
+html,
+body,
+#root {
+  margin: 0;
+  height: 100%;
+}
+
+body {
+  font-family: var(--nq-a-font);
+  background: var(--nq-a-page);
+  color: var(--nq-a-ink);
+  -webkit-font-smoothing: antialiased;
+}

admin/src/main.tsx

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

admin/src/pwa/pwa.test.ts

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

admin/src/pwa/register.ts

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

admin/src/schedule/ScheduleTab.css

@@ -0,0 +1,379 @@
+/* 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;
+}

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 +1,440 @@
+/**
+ * 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, useState } from "react";
+import { ApiForbiddenError } from "../api/client";
+import { ApiRequestError, fetchChildren, type AdminChild } from "../api/definitions";
+import {
+  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 "./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 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 saveErrorMessage(error: unknown): string {
+  if (error instanceof ApiForbiddenError) return error.message;
+  if (error instanceof ApiRequestError && error.detail) return error.detail;
+  return "The pattern could not be saved. Check your connection and try again.";
+}
+
+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>
+    </>
+  );
+}
+
+function OverrideRow({ override, childName }: { override: PresenceOverride; childName: string }) {
+  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>
+      {/* TODO(4ae0c879): the override editor wires delete; inert until then. */}
+      <button type="button" className="schedule-icon-action" aria-label="Delete override">
+        <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" });
+
+  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;
+        const message =
+          error instanceof ApiForbiddenError
+            ? error.message
+            : "The schedule could not be loaded. Check your connection and try again.";
+        setState({ kind: "error", message });
+      });
+    return () => {
+      cancelled = true;
+    };
+  }, [attempt]);
+
+  let sub = "";
+  let body;
+  if (state.kind === "loading") {
+    body = (
+      <div className="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 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>
+          {/* TODO(4ae0c879): the override editor wires Add; inert until then. */}
+          <button type="button" className="schedule-text-action">
+            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} />
+            ))}
+          </ul>
+        ) : (
+          <div className="schedule-card schedule-empty">No overrides for {child.display_name}.</div>
+        )}
+      </>
+    );
+  }
+
+  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 +1,76 @@
+/**
+ * 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>
+  );
+}

admin/src/today/TodayTab.css

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

admin/src/today/TodayTab.test.tsx

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

admin/src/today/TodayTab.tsx

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

admin/src/today/format.ts

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

admin/src/today/glyphs.tsx

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

admin/tsconfig.json

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

admin/vite-sw-plugin.ts

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

admin/vite.config.ts

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