feat(maps): add kill switches for Google Places autocomplete and details

Add admin toggles for places_autocomplete_enabled and places_details_enabled
alongside the existing places_photos_enabled, all default ON.

- adminService: getPlacesAutocomplete/updatePlacesAutocomplete, getPlacesDetails/updatePlacesDetails
- admin routes: GET/PUT /admin/places-autocomplete, /admin/places-details
- maps routes: autocomplete returns { suggestions: [], source: 'disabled' } when off;
  details returns { place: null, disabled: true } when off
- authService: both flags included in getAppConfig() response
- authStore: placesAutocompleteEnabled + placesDetailsEnabled state and setters
- App.tsx: wire both flags from app-config on load
- AdminPage: two new toggle rows using var(--text-primary)/var(--border-primary) consistent with rest of UI
- i18n: all 15 locales (en, de, ar, br, cs, es, fr, hu, id, it, nl, pl, ru, zh, zhTw)

server/src/services/adminService.ts

@@ -471,6 +471,30 @@ export function updatePlacesPhotos(enabled: boolean) {
   return { enabled: !!enabled };
 }
 
+// ── Places Autocomplete ────────────────────────────────────────────────────
+
+export function getPlacesAutocomplete() {
+  const row = db.prepare("SELECT value FROM app_settings WHERE key = 'places_autocomplete_enabled'").get() as { value: string } | undefined;
+  return { enabled: row?.value !== 'false' };
+}
+
+export function updatePlacesAutocomplete(enabled: boolean) {
+  db.prepare("INSERT OR REPLACE INTO app_settings (key, value) VALUES ('places_autocomplete_enabled', ?)").run(enabled ? 'true' : 'false');
+  return { enabled: !!enabled };
+}
+
+// ── Places Details ─────────────────────────────────────────────────────────
+
+export function getPlacesDetails() {
+  const row = db.prepare("SELECT value FROM app_settings WHERE key = 'places_details_enabled'").get() as { value: string } | undefined;
+  return { enabled: row?.value !== 'false' };
+}
+
+export function updatePlacesDetails(enabled: boolean) {
+  db.prepare("INSERT OR REPLACE INTO app_settings (key, value) VALUES ('places_details_enabled', ?)").run(enabled ? 'true' : 'false');
+  return { enabled: !!enabled };
+}
+
 // ── Collab Features ───────────────────────────────────────────────────────
 
 const COLLAB_FEATURE_KEYS = ['collab_chat_enabled', 'collab_notes_enabled', 'collab_polls_enabled', 'collab_whatsnext_enabled'] as const;