create project

frontend/lib/api/auth_api.dart

@@ -0,0 +1,30 @@
+import 'api_client.dart';
+
+class AuthApi {
+  final ApiClient _client;
+  AuthApi(this._client);
+
+  Future<Map<String, dynamic>> login(String phone, String password) {
+    return _client.post('/auth/login', data: {'phone': phone, 'password': password});
+  }
+
+  Future<Map<String, dynamic>> register(String phone, String password, String nickname) {
+    return _client.post('/auth/register', data: {'phone': phone, 'password': password, 'nickname': nickname});
+  }
+
+  Future<Map<String, dynamic>> logout() {
+    return _client.post('/auth/logout');
+  }
+
+  Future<Map<String, dynamic>> getProfile() {
+    return _client.get('/user/profile');
+  }
+
+  Future<Map<String, dynamic>> bindEmail(String email) {
+    return _client.put('/user/email', data: {'email': email});
+  }
+
+  Future<Map<String, dynamic>> switchActiveFamily(String? familyId) {
+    return _client.put('/user/active-family', data: {'familyId': familyId});
+  }
+}