feat: 增强日历功能并集成 AgentScope 代理服务

apps/lib/features/calendar/ui/widgets/create_event_sheet.dart

@@ -2,6 +2,7 @@ import 'package:flutter/cupertino.dart';
 import 'package:flutter/material.dart';
 import 'package:lucide_icons/lucide_icons.dart';
 import '../../../../core/di/injection.dart';
+import '../../../../core/notifications/local_notification_service.dart';
 import '../../../../core/theme/design_tokens.dart';
 import '../../data/models/schedule_item_model.dart';
 import '../../data/services/mock_calendar_service.dart';
@@ -63,6 +64,7 @@ class _CreateEventSheetState extends State<CreateEventSheet>
   DateTime? _endDate;
   DateTime? _endTime;
   String _selectedColor = '#3B82F6';
+  int? _reminderMinutes = 15;
   bool _saving = false;
   List<Attachment> _attachments = const [];
 
@@ -84,11 +86,13 @@ class _CreateEventSheetState extends State<CreateEventSheet>
       _endDate = event.endAt;
       _endTime = event.endAt;
       _selectedColor = event.metadata?.color ?? '#3B82F6';
+      _reminderMinutes = event.metadata?.reminderMinutes ?? 15;
       _attachments = List<Attachment>.from(
         event.metadata?.attachments ?? const [],
       );
     } else {
-      final now = widget.initialDate ?? DateTime.now();
+      final now =
+          widget.initialDate ?? _roundToNearestMinute(DateTime.now(), 5);
       _startDate = now;
       _startTime = now;
       _endDate = now;
@@ -108,6 +112,11 @@ class _CreateEventSheetState extends State<CreateEventSheet>
     super.dispose();
   }
 
+  DateTime _roundToNearestMinute(DateTime dt, int interval) {
+    final minute = (dt.minute / interval).round() * interval;
+    return DateTime(dt.year, dt.month, dt.day, dt.hour, minute % 60);
+  }
+
   @override
   Widget build(BuildContext context) {
     return Container(
@@ -254,6 +263,8 @@ class _CreateEventSheetState extends State<CreateEventSheet>
           const SizedBox(height: 20),
           _buildTextField('地点', _locationController, '请输入地点'),
           const SizedBox(height: 20),
+          _buildReminderPicker(),
+          const SizedBox(height: 20),
           _buildColorPicker(),
           const SizedBox(height: 20),
           _buildAttachmentsSection(),
@@ -706,6 +717,68 @@ class _CreateEventSheetState extends State<CreateEventSheet>
     );
   }
 
+  Widget _buildReminderPicker() {
+    const options = <int?>[null, 0, 5, 10, 15, 30, 60, 120];
+    String labelOf(int? value) {
+      if (value == null) {
+        return '无提醒';
+      }
+      if (value == 0) {
+        return '准时提醒';
+      }
+      return '开始前$value分钟';
+    }
+
+    return Column(
+      crossAxisAlignment: CrossAxisAlignment.start,
+      children: [
+        const Text(
+          '提醒时间',
+          style: TextStyle(
+            fontSize: 14,
+            fontWeight: FontWeight.w600,
+            color: AppColors.slate700,
+          ),
+        ),
+        const SizedBox(height: 8),
+        Container(
+          width: double.infinity,
+          padding: const EdgeInsets.symmetric(horizontal: 12),
+          decoration: BoxDecoration(
+            color: Colors.white,
+            borderRadius: BorderRadius.circular(AppRadius.lg),
+            border: Border.all(color: AppColors.border),
+          ),
+          child: DropdownButtonHideUnderline(
+            child: DropdownButton<int?>(
+              value: _reminderMinutes,
+              isExpanded: true,
+              items: options
+                  .map(
+                    (value) => DropdownMenuItem<int?>(
+                      value: value,
+                      child: Text(
+                        labelOf(value),
+                        style: const TextStyle(
+                          fontSize: 14,
+                          color: AppColors.slate700,
+                        ),
+                      ),
+                    ),
+                  )
+                  .toList(),
+              onChanged: (value) {
+                setState(() {
+                  _reminderMinutes = value;
+                });
+              },
+            ),
+          ),
+        ),
+      ],
+    );
+  }
+
   Future<void> _saveEvent() async {
     if (_titleController.text.trim().isEmpty || _saving) return;
     setState(() {
@@ -739,6 +812,7 @@ class _CreateEventSheetState extends State<CreateEventSheet>
       notes: _notesController.text.trim().isNotEmpty
           ? _notesController.text.trim()
           : null,
+      reminderMinutes: _reminderMinutes,
       attachments: _attachments,
       version: widget.editingEvent?.metadata?.version ?? 1,
     );
@@ -758,22 +832,21 @@ class _CreateEventSheetState extends State<CreateEventSheet>
 
     try {
       final service = sl<CalendarService>();
-      debugPrint('CalendarService: $service');
-      debugPrint('Is mock: ${service.runtimeType}');
+      final notificationService = sl<LocalNotificationService>();
+      late final ScheduleItemModel saved;
 
       if (_isEditing) {
-        await service.updateEvent(event);
+        saved = await service.updateEvent(event);
       } else {
-        await service.addEvent(event);
+        saved = await service.addEvent(event);
       }
+      await notificationService.upsertEventReminder(saved);
 
       widget.onSaved?.call();
       if (mounted) {
         Navigator.pop(context);
       }
-    } catch (e, stack) {
-      debugPrint('Save error: $e');
-      debugPrint('Stack: $stack');
+    } catch (e) {
       if (mounted) {
         ScaffoldMessenger.of(
           context,