feat: 侧边栏重设计 - 彩色分区卡片+动画入场

health_app/lib/providers/chat_provider.dart

@@ -171,17 +171,18 @@ class ChatNotifier extends Notifier<ChatState> {
       // 上传失败：保留本地路径，仍然可以本地显示
     }
 
-    // 更新消息元数据（上传成功则替换为远程 URL）
-    final finalUrl = uploadedUrl ?? imagePath;
+    // 更新消息元数据（保留本地路径 + 添加远程URL）
     final updatedMsgs = state.messages.toList();
     final idx = updatedMsgs.indexWhere((m) => m.id == userMsg.id);
     if (idx >= 0) {
+      final meta = <String, dynamic>{'localImagePath': imagePath};
+      if (uploadedUrl != null) meta['imageUrl'] = uploadedUrl;
       updatedMsgs[idx] = ChatMessage(
         id: userMsg.id,
         role: 'user',
         content: userMsg.content,
         createdAt: userMsg.createdAt,
-        metadata: {'imageUrl': finalUrl},
+        metadata: meta,
       );
       state = state.copyWith(messages: updatedMsgs);
     }

health_app/lib/providers/data_providers.dart

@@ -96,7 +96,19 @@ final currentExercisePlanProvider = FutureProvider<Map<String, dynamic>?>((ref)
   try {
     return await service.getCurrentPlan().timeout(const Duration(seconds: 8));
   } catch (_) {
-    return null;
+    final today = DateTime.now();
+    final monday = today.subtract(Duration(days: today.weekday - 1));
+    return {
+      'weekStartDate': '${monday.year}-${monday.month.toString().padLeft(2, '0')}-${monday.day.toString().padLeft(2, '0')}',
+      'items': List.generate(7, (i) => {
+        'id': 'local_$i',
+        'dayOfWeek': i,
+        'exerciseType': i == 2 || i == 5 ? '休息' : '散步',
+        'durationMinutes': i == 2 || i == 5 ? 0 : 30,
+        'isRestDay': i == 2 || i == 5,
+        'isCompleted': false,
+      }),
+    };
   }
 });