feat: 全面UI改造 — 报告/饮食/运动/用药/侧边栏/对话流/胶囊

- 报告模块：重写AI解读页，统一白色卡片+三栏布局(指标→解读→医生审核)；加删除功能+后端删接口；VLM自动识别报告类型生成中文标题；去五颜六色
- 饮食分析：全面重设计，暖橙主题配色，图片自适应，餐次emoji选择器，去紫色
- 运动确认卡片：修复duration_minutes JSON类型转换，支持中文数字识别(三十分钟/半小时→30)；主区域只显示运动名，字段行改为横向排列
- 流式输出：简化为最基础逐字追加，去buffer+Timer+淡入动画
- 欢迎卡片：每智能体独立渐变色(青/橙/蓝/紫/绿/粉)，加卡片入场滑入+淡入动画(600ms)
- 确认卡片：头部去紫色背景改浅灰白，字段行去图标改纯信息横排，编辑框去双重边框
- 用药管理：胶囊改TabBar，添加按钮改右下FAB；打卡按钮改对号圆圈形式；药丸图标白底
- 侧边栏：加VIP服务/保险栏+图标，标题字体放大；服务包去查看更多+去VIP金色标签
- 胶囊：首页智能体胶囊白底深色字; side胶囊加阴影
- 对话流：reverse=false，今日健康出现在顶部; 对话页input bar匹配主页面样式
- 其他：个人资料去紫色+去多余入口；设置页白底图标；蓝牙页加返回按钮；报告管理改名
- 后端：加DELETE /api/reports/{id}; 修复manage_exercise数据类型转换；AI提示优化中文数字

health_app/lib/pages/medication/medication_edit_page.dart

@@ -72,8 +72,7 @@ class _MedicationEditPageState extends ConsumerState<MedicationEditPage> {
   }
 
   @override Widget build(BuildContext context) {
-    return Scaffold(
-      backgroundColor: AppTheme.bg,
+    return GradientScaffold(
       appBar: AppBar(title: Text(widget.id != null ? '编辑用药' : '添加用药')),
       body: ListView(padding: const EdgeInsets.all(16), children: [
         // 名称+剂量 一行
@@ -95,8 +94,8 @@ class _MedicationEditPageState extends ConsumerState<MedicationEditPage> {
             if (t != null) setState(() => _times[i] = t);
           },
           child: Container(padding: const EdgeInsets.symmetric(horizontal: 14, vertical: 10),
-            decoration: BoxDecoration(color: AppTheme.primaryLight, borderRadius: BorderRadius.circular(12)),
-            child: Text('${_times[i].hour.toString().padLeft(2,'0')}:${_times[i].minute.toString().padLeft(2,'0')}', style: const TextStyle(fontSize: 18, color: AppTheme.primary, fontWeight: FontWeight.w600))),
+            decoration: BoxDecoration(color: Colors.white, borderRadius: BorderRadius.circular(12), border: Border.all(color: AppColors.border, width: 1)),
+            child: Text('${_times[i].hour.toString().padLeft(2,'0')}:${_times[i].minute.toString().padLeft(2,'0')}', style: const TextStyle(fontSize: 18, color: AppColors.textPrimary, fontWeight: FontWeight.w600))),
         ))),
         const SizedBox(height: 16),
         // 开始+结束 一行
@@ -108,7 +107,7 @@ class _MedicationEditPageState extends ConsumerState<MedicationEditPage> {
         const SizedBox(height: 16),
         _field('备注', _notesCtrl, hint: '如: 饭后服用、睡前'),
         const SizedBox(height: 32),
-        SizedBox(width: double.infinity, child: ElevatedButton(onPressed: _loading ? null : _save, style: ElevatedButton.styleFrom(backgroundColor: AppTheme.primary, foregroundColor: Colors.white, shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(14)), padding: const EdgeInsets.symmetric(vertical: 14)), child: Text(_loading ? '保存中...' : '保存', style: const TextStyle(fontSize: 19)))),
+        SizedBox(width: double.infinity, child: ElevatedButton(onPressed: _loading ? null : _save, style: ElevatedButton.styleFrom(backgroundColor: Colors.white, foregroundColor: AppColors.primary, side: const BorderSide(color: AppColors.primary, width: 1.5), shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(14)), padding: const EdgeInsets.symmetric(vertical: 14)), child: Text(_loading ? '保存中...' : '保存', style: const TextStyle(fontSize: 19, fontWeight: FontWeight.w600)))),
         const SizedBox(height: 20),
       ]),
     );
@@ -119,7 +118,7 @@ class _MedicationEditPageState extends ConsumerState<MedicationEditPage> {
     _label(label), const SizedBox(height: 6),
     TextField(controller: ctrl, decoration: InputDecoration(hintText: hint, filled: true, fillColor: AppTheme.surface, border: OutlineInputBorder(borderRadius: BorderRadius.circular(AppTheme.rMd), borderSide: BorderSide.none), contentPadding: const EdgeInsets.symmetric(horizontal: 12, vertical: 12)), style: const TextStyle(fontSize: 19)),
   ]);
-  Widget _chip(String label, bool sel, VoidCallback onTap) => GestureDetector(onTap: onTap, child: Container(padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 8), decoration: BoxDecoration(color: sel ? AppTheme.primary : AppTheme.primaryLight, borderRadius: BorderRadius.circular(16)), child: Text(label, style: TextStyle(fontSize: 16, color: sel ? Colors.white : AppTheme.primary, fontWeight: FontWeight.w500))));
+  Widget _chip(String label, bool sel, VoidCallback onTap) => GestureDetector(onTap: onTap, child: Container(padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 8), decoration: BoxDecoration(color: sel ? Colors.white : AppColors.cardInner, borderRadius: BorderRadius.circular(16), border: sel ? Border.all(color: AppColors.primary, width: 1.5) : null), child: Text(label, style: TextStyle(fontSize: 16, color: sel ? AppColors.primary : AppColors.textSecondary, fontWeight: FontWeight.w500))));
   Widget _dateField(String label, DateTime val, ValueChanged<DateTime> cb) => Column(crossAxisAlignment: CrossAxisAlignment.start, children: [
     _label(label), const SizedBox(height: 6),
     GestureDetector(onTap: () async { final d = await showDatePicker(context: context, initialDate: val, firstDate: DateTime(2024), lastDate: DateTime(2030)); if (d != null) cb(d); },