Replace geofence polling with native Android geofence

lib/features/homes/services/geofence_automation_service.dart

@@ -0,0 +1,40 @@
+import 'package:flutter/services.dart';
+
+import '../../../models/home_config.dart';
+import '../../../services/settings_service.dart';
+
+class GeofenceAutomationService {
+  GeofenceAutomationService({SettingsService? settingsService})
+    : _settingsService = settingsService ?? SettingsService();
+
+  static const _channel = MethodChannel('ignis/geofence_automation');
+
+  final SettingsService _settingsService;
+
+  Future<void> syncActiveHome(HomeConfig? home) async {
+    if (home == null || !home.geofenceReady) {
+      await _invoke('disarmGeofence');
+      return;
+    }
+
+    final apiKey = await _settingsService.requireHomeApiKey(home.id);
+    await _invoke('armGeofence', {
+      'homeId': home.id,
+      'baseUrl': home.url,
+      'apiKey': apiKey,
+      'latitude': home.latitude,
+      'longitude': home.longitude,
+      'radiusMeters': home.geofenceRadiusMeters,
+    });
+  }
+
+  Future<void> _invoke(String method, [Map<String, Object?>? arguments]) async {
+    try {
+      await _channel.invokeMethod<void>(method, arguments);
+    } on MissingPluginException {
+      // В тестах и на не-Android средах platform channel может отсутствовать.
+    } on PlatformException {
+      rethrow;
+    }
+  }
+}