feat: implement Stripe checkout flow, update profile settings UI for subscriptions, and add agent profile editing.

lib/features/profile/data/profile_repository.dart

@@ -299,6 +299,53 @@ class ProfileRepository {
     }
   }
 
+  /// Get sections for an agent type: GET /profile-sections/agent-type/{agentTypeId}
+  /// Returns { agentType: {...}, sections: [...] }
+  Future<Map<String, dynamic>> getSectionsForAgentType(
+      String agentTypeId) async {
+    try {
+      final response =
+          await _dio.get('/profile-sections/agent-type/$agentTypeId');
+      return response.data['data'] as Map<String, dynamic>;
+    } on DioException catch (e) {
+      if (e.error is ApiException) throw e.error as ApiException;
+      throw ApiException(
+        message: e.message ?? 'Failed to fetch profile sections',
+        statusCode: e.response?.statusCode,
+      );
+    }
+  }
+
+  /// Get field values: GET /agents/profile/field-values
+  /// Returns { agentProfileId: "...", fieldValues: [...] }
+  Future<Map<String, dynamic>> getFieldValues() async {
+    try {
+      final response = await _dio.get('/agents/profile/field-values');
+      return response.data['data'] as Map<String, dynamic>;
+    } on DioException catch (e) {
+      if (e.error is ApiException) throw e.error as ApiException;
+      throw ApiException(
+        message: e.message ?? 'Failed to fetch field values',
+        statusCode: e.response?.statusCode,
+      );
+    }
+  }
+
+  /// Save field values: PUT /agents/profile/field-values
+  Future<void> saveFieldValues(List<Map<String, dynamic>> fieldValues) async {
+    try {
+      await _dio.put('/agents/profile/field-values', data: {
+        'fieldValues': fieldValues,
+      });
+    } on DioException catch (e) {
+      if (e.error is ApiException) throw e.error as ApiException;
+      throw ApiException(
+        message: e.message ?? 'Failed to save field values',
+        statusCode: e.response?.statusCode,
+      );
+    }
+  }
+
   /// Cancel subscription: POST /stripe/cancel-subscription
   Future<void> cancelSubscription() async {
     try {