Initial commit: family safety frontend project setup

lib/services/geo_service.dart

@@ -0,0 +1,24 @@
+import 'dart:convert';
+import 'package:http/http.dart' as http;
+import '../config/api.dart';
+
+class GeoService {
+  final http.Client _client;
+  
+  GeoService({http.Client? client}) : _client = client ?? http.Client();
+
+  Future<void> updatePosition(String token, int id, double x, double y) async {
+    final response = await _client.put(
+      Uri.parse('${ApiConfig.geoUrl}?id=$id'),
+      headers: {
+        'Content-Type': 'application/json',
+        'Authorization': 'Bearer $token',
+      },
+      body: jsonEncode({'x': x, 'y': y}),
+    );
+    
+    if (response.statusCode != 200) {
+      throw Exception('Failed to update position');
+    }
+  }
+}