Add guessed node location map keys and translations

Adds map_showGuessedLocations and map_guessedLocation to app_en.arb and translates them across all 14 supported locales. Regenerates dart localizations.

lib/services/app_settings_service.dart

@@ -80,6 +80,10 @@ class AppSettingsService extends ChangeNotifier {
     await updateSettings(_settings.copyWith(mapShowMarkers: value));
   }
 
+  Future<void> setMapShowGuessedLocations(bool value) async {
+    await updateSettings(_settings.copyWith(mapShowGuessedLocations: value));
+  }
+
   Future<void> setEnableMessageTracing(bool value) async {
     await updateSettings(_settings.copyWith(enableMessageTracing: value));
   }

lib/services/path_history_service.dart

@@ -15,6 +15,9 @@ class PathHistoryService extends ChangeNotifier {
   final List<String> _cacheAccessOrder = [];
 
   static const int _maxHistoryEntries = 100;
+
+  int _version = 0;
+  int get version => _version;
   static const int _autoRotationTopCount = 3;
 
   PathHistoryService(this._storage);
@@ -185,6 +188,7 @@ class PathHistoryService extends ChangeNotifier {
   ) {
     var history = _cache[contactPubKeyHex];
     if (history == null) return;
+    _version++;
 
     final existing = _findPathRecord(contactPubKeyHex, pathBytes);
     if (existing != null) {
@@ -241,6 +245,7 @@ class PathHistoryService extends ChangeNotifier {
         _cache[contactPubKeyHex] = loaded;
         _trackAccess(contactPubKeyHex);
         _evictIfNeeded();
+        _version++;
         notifyListeners();
       }
     });