feat: 用药提醒功能 + 移除医生相关页面

- 后端新增 GET /api/medications/reminders 接口
- 前端任务卡片区显示真实用药提醒
- 移除 DoctorListPage/DoctorChatPage 路由
- 移除"找医生"面板按钮
- 医生端另做 Web 页面

health_app/lib/pages/home/home_page.dart

@@ -18,11 +18,34 @@ class _HomePageState extends ConsumerState<HomePage> {
   final _textCtrl = TextEditingController();
   final _scrollCtrl = ScrollController();
   bool _taskCardsExpanded = true;
+  double _lastScrollOffset = 0;
+  DateTime? _lastCollapseTime;
+  bool _medicationTaken = false;
+  bool _exerciseDone = false;
+
+  static final _mockFollowUps = [
+    {'hospital': '协和医院', 'department': '心内科', 'date': DateTime.now().add(const Duration(days: 2)), 'type': '复查'},
+    {'hospital': '人民医院', 'department': '心内科', 'date': DateTime.now().add(const Duration(days: 3)), 'type': '复诊'},
+  ];
 
   @override void initState() { super.initState(); _scrollCtrl.addListener(_onScroll); }
   @override void dispose() { _textCtrl.dispose(); _scrollCtrl.dispose(); super.dispose(); }
 
-  void _onScroll() {}
+  void _onScroll() {
+    if (!_scrollCtrl.hasClients) return;
+    final offset = _scrollCtrl.offset;
+    if (offset < _lastScrollOffset && _taskCardsExpanded) {
+      final delta = _lastScrollOffset - offset;
+      if (delta > 50) {
+        final now = DateTime.now();
+        if (_lastCollapseTime == null || now.difference(_lastCollapseTime!) > const Duration(seconds: 2)) {
+          _lastCollapseTime = now;
+          setState(() => _taskCardsExpanded = false);
+        }
+      }
+    }
+    _lastScrollOffset = offset;
+  }
 
   void _sendMessage() {
     final text = _textCtrl.text.trim();
@@ -148,12 +171,90 @@ class _HomePageState extends ConsumerState<HomePage> {
   }
 
   List<Widget> _getTodayTasks(Map<String, dynamic> healthData) {
-    return [
-      _taskRow(icon: Icons.medication_rounded, label: '计划 8:00 吃 阿司匹林 100mg', status: 'done', onTap: _handleMedicationCheck),
-      _taskRow(icon: Icons.directions_run, label: '今日待运动：散步 30 分钟', status: 'pending', onTap: null),
-      _taskRow(icon: Icons.today, label: '今日测量：血压', status: 'pending', onTap: () => _textCtrl.text = '血压 '),
-      ..._buildAbnormalRows(healthData),
-    ];
+    final now = DateTime.now();
+    final tasks = <Widget>[];
+
+    // 1. 数据摘要卡片（有今日指标数据时显示）
+    final summaryParts = <String>[];
+    final bp = healthData['BloodPressure'];
+    if (bp is Map) {
+      final s = bp['systolic'];
+      final d = bp['diastolic'];
+      if (s != null && d != null) summaryParts.add('血压 $s/$d');
+    }
+    final hr = healthData['HeartRate'];
+    if (hr is int) summaryParts.add('心率 $hr');
+    final bs = healthData['BloodSugar'];
+    if (bs is num) summaryParts.add('血糖 $bs');
+    final bo = healthData['BloodOxygen'];
+    if (bo is num) summaryParts.add('血氧 $bo');
+    final wt = healthData['Weight'];
+    if (wt is num) summaryParts.add('体重 $wt');
+
+    if (summaryParts.isNotEmpty) {
+      tasks.add(_summaryCard(summaryParts));
+    }
+
+    // 2. 用药提醒（从后端拉取真实数据）
+    final reminders = ref.watch(medicationReminderProvider);
+    reminders.whenData((meds) {
+      for (final m in meds) {
+        final name = m['name'] ?? '';
+        final dosage = m['dosage'] ?? '';
+        final times = (m['timeOfDay'] as List?)?.map((t) => t.toString().substring(0, 5)).join(', ') ?? '';
+        final medOverdue = now.hour >= 8;
+        tasks.add(_taskRow(
+          icon: Icons.medication_rounded,
+          label: '$name $dosage ($times)',
+          status: 'pending',
+          isOverdue: medOverdue,
+          onTap: () => _handleMedicationCheck,
+        ));
+      }
+    });
+
+    // 无提醒时显示默认用药卡片
+    if (tasks.length <= (summaryParts.isNotEmpty ? 1 : 0)) {
+      tasks.add(_taskRow(
+        icon: Icons.medication_rounded,
+        label: '暂无用药提醒',
+        status: 'pending',
+        onTap: null,
+      ));
+    }
+
+    // 3. 运动卡片（超时变红）
+    final exOverdue = now.hour >= 18 && !_exerciseDone;
+    tasks.add(_taskRow(
+      icon: Icons.directions_run,
+      label: '今日待运动：散步 30 分钟',
+      status: _exerciseDone ? 'done' : 'pending',
+      isOverdue: exOverdue,
+      onTap: _exerciseDone ? null : () => setState(() => _exerciseDone = true),
+    ));
+
+    // 4. 测量卡片
+    tasks.add(_taskRow(
+      icon: Icons.today,
+      label: '今日测量：血压',
+      status: 'pending',
+      onTap: () => _textCtrl.text = '血压 ',
+    ));
+
+    // 5. 异常指标
+    tasks.addAll(_buildAbnormalRows(healthData));
+
+    // 6. 复查提醒（未来3天内有复查安排时显示）
+    final upcomingFollowUps = _mockFollowUps.where((f) {
+      final date = f['date'] as DateTime;
+      return date.difference(now).inDays <= 3 && date.isAfter(now);
+    }).toList();
+
+    if (upcomingFollowUps.isNotEmpty) {
+      tasks.add(_followUpCard(upcomingFollowUps.first));
+    }
+
+    return tasks;
   }
 
   List<Widget> _buildAbnormalRows(Map<String, dynamic> healthData) {
@@ -163,25 +264,98 @@ class _HomePageState extends ConsumerState<HomePage> {
     return rows;
   }
 
-  Widget _taskRow({required IconData icon, required String label, required String status, VoidCallback? onTap}) {
+  Widget _summaryCard(List<String> parts) {
+    return Padding(
+      padding: const EdgeInsets.only(bottom: 10),
+      child: GestureDetector(
+        behavior: HitTestBehavior.opaque,
+        onTap: () => pushRoute(ref, 'trend'),
+        child: Container(
+          padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 10),
+          decoration: BoxDecoration(
+            color: const Color(0xFFF1F8E9),
+            borderRadius: BorderRadius.circular(10),
+          ),
+          child: Row(children: [
+            const Icon(Icons.check_circle, size: 18, color: Color(0xFF43A047)),
+            const SizedBox(width: 10),
+            Expanded(child: Text(
+              '今日已记录：${parts.join('、')}',
+              style: const TextStyle(fontSize: 13, color: Color(0xFF333333)),
+            )),
+          ]),
+        ),
+      ),
+    );
+  }
+
+  Widget _followUpCard(Map<String, dynamic> followUp) {
+    final date = followUp['date'] as DateTime;
+    final now = DateTime.now();
+    final diff = date.difference(now).inDays;
+    String dateLabel;
+    if (diff == 0) {
+      dateLabel = '今天';
+    } else if (diff == 1) {
+      dateLabel = '明天';
+    } else if (diff == 2) {
+      dateLabel = '后天';
+    } else {
+      dateLabel = '$diff天后';
+    }
+
+    return Padding(
+      padding: const EdgeInsets.only(bottom: 10),
+      child: GestureDetector(
+        behavior: HitTestBehavior.opaque,
+        onTap: () => pushRoute(ref, 'followups'),
+        child: Row(children: [
+          Container(
+            width: 30, height: 30,
+            decoration: BoxDecoration(
+              color: const Color(0xFFF5F3FF),
+              borderRadius: BorderRadius.circular(8),
+            ),
+            child: const Icon(Icons.event_available, size: 15, color: Color(0xFF635BFF)),
+          ),
+          const SizedBox(width: 10),
+          Expanded(child: Text(
+            '📋 $dateLabel ${followUp['hospital']} ${followUp['department']} ${followUp['type']}',
+            style: const TextStyle(fontSize: 13, color: Color(0xFF333333)),
+          )),
+        ]),
+      ),
+    );
+  }
+
+  Widget _taskRow({required IconData icon, required String label, required String status, VoidCallback? onTap, bool isOverdue = false}) {
     final colors = {'done': const Color(0xFF43A047), 'warning': const Color(0xFFFF9800), 'pending': const Color(0xFF9E9E9E)};
     final icons = {'done': Icons.check_circle, 'warning': Icons.warning, 'pending': Icons.circle_outlined};
+    final effectiveStatus = isOverdue ? 'warning' : status;
     return Padding(
       padding: const EdgeInsets.only(bottom: 10),
       child: GestureDetector(
         behavior: HitTestBehavior.opaque,
         onTap: onTap,
-        child: Row(children: [
-          Container(width: 30, height: 30, decoration: BoxDecoration(color: const Color(0xFFF5F3FF), borderRadius: BorderRadius.circular(8)), child: Icon(icon, size: 15, color: const Color(0xFF635BFF))),
-          const SizedBox(width: 10), Expanded(child: Text(label, style: const TextStyle(fontSize: 13, color: Color(0xFF333333)))),
-          Icon(icons[status], size: 18, color: colors[status] ?? Colors.grey),
-        ]),
+        child: Container(
+          padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 6),
+          decoration: BoxDecoration(
+            color: isOverdue ? const Color(0xFFFFEBEE) : Colors.transparent,
+            borderRadius: BorderRadius.circular(8),
+          ),
+          child: Row(children: [
+            Container(width: 30, height: 30, decoration: BoxDecoration(color: const Color(0xFFF5F3FF), borderRadius: BorderRadius.circular(8)), child: Icon(icon, size: 15, color: const Color(0xFF635BFF))),
+            const SizedBox(width: 10), Expanded(child: Text(label, style: const TextStyle(fontSize: 13, color: Color(0xFF333333)))),
+            Icon(icons[effectiveStatus], size: 18, color: colors[effectiveStatus] ?? Colors.grey),
+          ]),
+        ),
       ),
     );
   }
 
   void _handleMedicationCheck() async {
     await ref.read(medicationServiceProvider).confirm('');
+    setState(() => _medicationTaken = true);
     if (!mounted) return;
     ScaffoldMessenger.of(context).showSnackBar(const SnackBar(content: Text('已记录服药 ✅'), backgroundColor: Color(0xFF635BFF)));
   }
@@ -260,7 +434,7 @@ class _HomePageState extends ConsumerState<HomePage> {
       case ActiveAgent.health: return [_agentBtn('录入血压', Icons.favorite), _agentBtn('录入血糖', Icons.bloodtype), _agentBtn('录入心率', Icons.monitor_heart), _agentBtn('录入血氧', Icons.air), _agentBtn('录入体重', Icons.monitor_weight)];
       case ActiveAgent.diet: return [_agentBtn('拍照识别', Icons.camera_alt), _agentBtn('上传照片', Icons.photo_library)];
       case ActiveAgent.medication: return [_agentBtn('用药管理', Icons.medication), _agentBtn('用药提醒', Icons.alarm)];
-      case ActiveAgent.consultation: return [_agentBtn('找医生', Icons.person_search)];
+      case ActiveAgent.consultation: return [];
       case ActiveAgent.exercise: return [_agentBtn('本周计划', Icons.calendar_view_week), _agentBtn('新建计划', Icons.add_circle_outline)];
       default: return [];
     }
@@ -287,7 +461,6 @@ class _HomePageState extends ConsumerState<HomePage> {
       case '录入血氧': _textCtrl.text = '血氧 ';
       case '录入体重': _textCtrl.text = '体重 ';
       case '用药管理': pushRoute(ref, 'medications');
-      case '找医生': pushRoute(ref, 'doctors');
       case '本周计划': case '新建计划': pushRoute(ref, 'exercisePlan');
     }
   }