feat: add more easter eggs

lib/services/remote_sync_service.dart

@@ -104,6 +104,28 @@ class RemoteSyncService {
   /// Null for devices linked before the name was kept.
   Future<String?> get venueName => secureStorage.read(key: _venueNameKey);
 
+  /// Looks up and keeps the venue's name for a device linked before the
+  /// name was kept. Null when it can't be found, e.g. while offline.
+  Future<String?> fetchVenueName() async {
+    final venueId = await this.venueId;
+    if (venueId == null) return null;
+
+    try {
+      final venues = await apiClient.getVenues();
+      final name = venues
+          .where((venue) => venue.id == venueId)
+          .firstOrNull
+          ?.name;
+      if (name != null) {
+        await secureStorage.write(key: _venueNameKey, value: name);
+      }
+      return name;
+    } on Exception catch (e) {
+      debugPrint('RemoteSyncService: fetchVenueName error: $e');
+      return null;
+    }
+  }
+
   Future<bool> get isConfigured async => await _credentials() != null;
 
   Future<String?> get authToken async => (await _credentials())?.token;