feat: 增强日历功能并集成 AgentScope 代理服务

apps/test/features/calendar/data/calendar_api_test.dart

@@ -22,6 +22,7 @@ void main() {
               'color': '#4F46E5',
               'location': '会议室A',
               'notes': '带电脑',
+              'reminder_minutes': 15,
               'attachments': [
                 {
                   'name': '议程文档',
@@ -52,6 +53,7 @@ void main() {
       expect(result, hasLength(1));
       expect(result.first.metadata?.attachments, hasLength(1));
       expect(result.first.metadata?.raw['new_field'], 'future');
+      expect(result.first.metadata?.reminderMinutes, 15);
       expect(result.first.startAt.isUtc, isFalse);
     });
 
@@ -60,6 +62,7 @@ void main() {
       client.registerHandler('/api/v1/schedule-items', 'POST', (request) {
         final body = request.data as Map<String, dynamic>;
         expect(body['metadata']['version'], 1);
+        expect(body['metadata']['reminder_minutes'], 15);
         expect(body['metadata']['attachments'], isA<List<dynamic>>());
         return {
           'id': 'evt_2',
@@ -83,6 +86,7 @@ void main() {
             location: '线上',
             notes: '准备 demo',
             attachments: [Attachment(name: 'PRD', type: 'document')],
+            reminderMinutes: 15,
             version: 1,
           ),
         ),
@@ -100,6 +104,7 @@ void main() {
         final body = request.data as Map<String, dynamic>;
         final metadata = body['metadata'] as Map<String, dynamic>;
         expect(metadata.containsKey('new_field'), isFalse);
+        expect(metadata['reminder_minutes'], 30);
         return {
           'id': 'evt_3',
           ...body,
@@ -121,6 +126,7 @@ void main() {
           'notes': '更新周报',
           'attachments': const [],
           'version': 1,
+          'reminder_minutes': 30,
           'new_field': 'future',
         }),
       );