feat: weekly digest + local-time quiet hours

Weekly Digest (send_weekly_digest Celery task):
- Runs every Monday 8:30 AM UTC via beat schedule
- Queries all followed bills updated in the past 7 days per user
- Sends low-priority ntfy push (Priority: low, Tags: newspaper,calendar)
- Creates a NotificationEvent (weekly_digest type) for RSS feed visibility
- Admin can trigger immediately via POST /api/admin/trigger-weekly-digest
- Manual Controls panel now includes "Send Weekly Digest" button

Local-time quiet hours:
- Browser auto-detects IANA timezone via Intl.DateTimeFormat().resolvedOptions().timeZone
- Timezone saved to notification_prefs alongside quiet_hours_start/end on Save
- Dispatcher converts UTC → user's local time (zoneinfo stdlib) before hour comparison
- Falls back to UTC if timezone absent or unrecognised
- Quiet hours UI: 12-hour AM/PM selectors, shows detected timezone as hint
- Clearing quiet hours also clears stored timezone

Co-Authored-By: Jack Levy

frontend/app/notifications/page.tsx

@@ -16,10 +16,11 @@ const AUTH_METHODS = [
   { value: "basic", label: "Username & password", hint: "For servers behind HTTP basic auth or nginx ACL" },
 ];
 
-const HOURS = Array.from({ length: 24 }, (_, i) => ({
-  value: i,
-  label: `${i.toString().padStart(2, "0")}:00 UTC`,
-}));
+const HOURS = Array.from({ length: 24 }, (_, i) => {
+  const period = i < 12 ? "AM" : "PM";
+  const hour = i === 0 ? 12 : i > 12 ? i - 12 : i;
+  return { value: i, label: `${hour}:00 ${period}` };
+});
 
 const EVENT_META: Record<string, { label: string; icon: typeof Bell; color: string }> = {
   new_document: { label: "New Bill Text", icon: FileText, color: "text-blue-500" },
@@ -83,12 +84,23 @@ export default function NotificationsPage() {
   const [quietStart, setQuietStart] = useState(22);
   const [quietEnd, setQuietEnd] = useState(8);
   const [quietSaved, setQuietSaved] = useState(false);
+  const [detectedTimezone, setDetectedTimezone] = useState<string>("");
+  const [savedTimezone, setSavedTimezone] = useState<string | null>(null);
 
   // Digest state
   const [digestEnabled, setDigestEnabled] = useState(false);
   const [digestFrequency, setDigestFrequency] = useState<"daily" | "weekly">("daily");
   const [digestSaved, setDigestSaved] = useState(false);
 
+  // Detect the browser's local timezone once on mount
+  useEffect(() => {
+    try {
+      setDetectedTimezone(Intl.DateTimeFormat().resolvedOptions().timeZone);
+    } catch {
+      // very old browser — leave empty, dispatcher will fall back to UTC
+    }
+  }, []);
+
   // Populate from loaded settings
   useEffect(() => {
     if (!settings) return;
@@ -99,6 +111,7 @@ export default function NotificationsPage() {
     setPassword(settings.ntfy_password ?? "");
     setDigestEnabled(settings.digest_enabled ?? false);
     setDigestFrequency(settings.digest_frequency ?? "daily");
+    setSavedTimezone(settings.timezone ?? null);
     if (settings.quiet_hours_start != null) {
       setQuietEnabled(true);
       setQuietStart(settings.quiet_hours_start);
@@ -130,17 +143,20 @@ export default function NotificationsPage() {
   };
 
   const saveQuietHours = () => {
+    const onSuccess = () => { setQuietSaved(true); setTimeout(() => setQuietSaved(false), 2000); };
     if (quietEnabled) {
       update.mutate(
-        { quiet_hours_start: quietStart, quiet_hours_end: quietEnd },
-        { onSuccess: () => { setQuietSaved(true); setTimeout(() => setQuietSaved(false), 2000); } }
+        {
+          quiet_hours_start: quietStart,
+          quiet_hours_end: quietEnd,
+          // Include the detected timezone so the dispatcher knows which local time to compare
+          ...(detectedTimezone ? { timezone: detectedTimezone } : {}),
+        },
+        { onSuccess }
       );
     } else {
-      // -1 signals the backend to clear the values
-      update.mutate(
-        { quiet_hours_start: -1 },
-        { onSuccess: () => { setQuietSaved(true); setTimeout(() => setQuietSaved(false), 2000); } }
-      );
+      // -1 signals the backend to clear quiet hours + timezone
+      update.mutate({ quiet_hours_start: -1 }, { onSuccess });
     }
   };
 
@@ -324,7 +340,7 @@ export default function NotificationsPage() {
           </h2>
           <p className="text-xs text-muted-foreground mt-1">
             Pause ntfy push notifications during set hours. Events accumulate and fire as a batch when quiet hours end.
-            All times are UTC. RSS is unaffected.
+            RSS is unaffected.
           </p>
         </div>
 
@@ -335,23 +351,33 @@ export default function NotificationsPage() {
         </label>
 
         {quietEnabled && (
-          <div className="flex items-center gap-3 flex-wrap">
-            <div className="flex items-center gap-2">
-              <label className="text-sm text-muted-foreground">From</label>
-              <select value={quietStart} onChange={(e) => setQuietStart(Number(e.target.value))}
-                className="px-2 py-1.5 text-sm bg-background border border-border rounded-md">
-                {HOURS.map(({ value, label }) => <option key={value} value={value}>{label}</option>)}
-              </select>
+          <div className="space-y-3">
+            <div className="flex items-center gap-3 flex-wrap">
+              <div className="flex items-center gap-2">
+                <label className="text-sm text-muted-foreground">From</label>
+                <select value={quietStart} onChange={(e) => setQuietStart(Number(e.target.value))}
+                  className="px-2 py-1.5 text-sm bg-background border border-border rounded-md">
+                  {HOURS.map(({ value, label }) => <option key={value} value={value}>{label}</option>)}
+                </select>
+              </div>
+              <div className="flex items-center gap-2">
+                <label className="text-sm text-muted-foreground">To</label>
+                <select value={quietEnd} onChange={(e) => setQuietEnd(Number(e.target.value))}
+                  className="px-2 py-1.5 text-sm bg-background border border-border rounded-md">
+                  {HOURS.map(({ value, label }) => <option key={value} value={value}>{label}</option>)}
+                </select>
+              </div>
+              {quietStart > quietEnd && (
+                <span className="text-xs text-muted-foreground">(overnight window)</span>
+              )}
             </div>
-            <div className="flex items-center gap-2">
-              <label className="text-sm text-muted-foreground">To</label>
-              <select value={quietEnd} onChange={(e) => setQuietEnd(Number(e.target.value))}
-                className="px-2 py-1.5 text-sm bg-background border border-border rounded-md">
-                {HOURS.map(({ value, label }) => <option key={value} value={value}>{label}</option>)}
-              </select>
-            </div>
-            {quietStart > quietEnd && (
-              <span className="text-xs text-muted-foreground">(overnight window)</span>
+            {detectedTimezone && (
+              <p className="text-xs text-muted-foreground">
+                Times are in your local timezone: <span className="font-medium text-foreground">{detectedTimezone}</span>
+                {savedTimezone && savedTimezone !== detectedTimezone && (
+                  <span className="text-amber-600 dark:text-amber-400"> · saved as {savedTimezone} — save to update</span>
+                )}
+              </p>
             )}
           </div>
         )}

frontend/app/settings/page.tsx

@@ -734,6 +734,13 @@ export default function SettingsPage() {
               count: stats?.pending_llm,
               countLabel: "bills pending analysis",
             },
+            {
+              key: "weekly-digest",
+              name: "Send Weekly Digest",
+              description: "Immediately dispatch the weekly bill activity summary to all users who have ntfy or RSS enabled and at least one bill followed. Runs automatically every Monday at 8:30 AM UTC.",
+              fn: adminAPI.triggerWeeklyDigest,
+              status: "on-demand",
+            },
           ];
 
           const maintenance: ControlItem[] = [

frontend/lib/api.ts

@@ -241,6 +241,8 @@ export const adminAPI = {
     apiClient.post("/api/admin/backfill-labels").then((r) => r.data),
   resumeAnalysis: () =>
     apiClient.post("/api/admin/resume-analysis").then((r) => r.data),
+  triggerWeeklyDigest: () =>
+    apiClient.post("/api/admin/trigger-weekly-digest").then((r) => r.data),
   getApiHealth: () =>
     apiClient.get<ApiHealth>("/api/admin/api-health").then((r) => r.data),
   getTaskStatus: (taskId: string) =>

frontend/lib/types.ts

@@ -171,6 +171,7 @@ export interface NotificationSettings {
   digest_frequency: "daily" | "weekly";
   quiet_hours_start: number | null;
   quiet_hours_end: number | null;
+  timezone: string | null;  // IANA name, e.g. "America/New_York"
 }
 
 export interface NotificationEvent {