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)

client/src/store/authStore.ts

@@ -34,6 +34,8 @@ interface AuthState {
   appRequireMfa: boolean
   tripRemindersEnabled: boolean
   placesPhotosEnabled: boolean
+  placesAutocompleteEnabled: boolean
+  placesDetailsEnabled: boolean
 
   login: (email: string, password: string) => Promise<LoginResult>
   completeMfaLogin: (mfaToken: string, code: string) => Promise<AuthResponse>
@@ -55,6 +57,8 @@ interface AuthState {
   setAppRequireMfa: (val: boolean) => void
   setTripRemindersEnabled: (val: boolean) => void
   setPlacesPhotosEnabled: (val: boolean) => void
+  setPlacesAutocompleteEnabled: (val: boolean) => void
+  setPlacesDetailsEnabled: (val: boolean) => void
   demoLogin: () => Promise<AuthResponse>
 }
 
@@ -77,6 +81,8 @@ export const useAuthStore = create<AuthState>()(
   appRequireMfa: false,
   tripRemindersEnabled: false,
   placesPhotosEnabled: true,
+  placesAutocompleteEnabled: true,
+  placesDetailsEnabled: true,
 
   login: async (email: string, password: string) => {
     authSequence++
@@ -261,6 +267,8 @@ export const useAuthStore = create<AuthState>()(
   setAppRequireMfa: (val: boolean) => set({ appRequireMfa: val }),
   setTripRemindersEnabled: (val: boolean) => set({ tripRemindersEnabled: val }),
   setPlacesPhotosEnabled: (val: boolean) => set({ placesPhotosEnabled: val }),
+  setPlacesAutocompleteEnabled: (val: boolean) => set({ placesAutocompleteEnabled: val }),
+  setPlacesDetailsEnabled: (val: boolean) => set({ placesDetailsEnabled: val }),
 
   demoLogin: async () => {
     authSequence++