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/home/home_page.dart

@@ -61,7 +61,9 @@ class _HomePageState extends ConsumerState<HomePage> {
     final currentCount = chatState.messages.length;
     if (currentCount > _lastMsgCount) {
       WidgetsBinding.instance.addPostFrameCallback((_) {
-        if (_scrollCtrl.hasClients) _scrollCtrl.jumpTo(0);
+        if (_scrollCtrl.hasClients) {
+          _scrollCtrl.jumpTo(_scrollCtrl.position.maxScrollExtent);
+        }
       });
     }
     _lastMsgCount = currentCount;
@@ -88,10 +90,9 @@ class _HomePageState extends ConsumerState<HomePage> {
       child: Row(children: [
         Builder(builder: (ctx) => GestureDetector(
           onTap: () => Scaffold.of(ctx).openDrawer(),
-          child: Container(
-            width: 38, height: 38,
-            decoration: BoxDecoration(color: AppColors.iconBg, borderRadius: BorderRadius.circular(10)),
-            child: const Icon(LucideIcons.menu, size: 20, color: AppColors.primary),
+          child: const Padding(
+            padding: EdgeInsets.all(8),
+            child: Icon(LucideIcons.menu, size: 22, color: AppColors.textPrimary),
           ),
         )),
         const SizedBox(width: 12),
@@ -122,7 +123,7 @@ class _HomePageState extends ConsumerState<HomePage> {
     (ActiveAgent.health, '记数据', LucideIcons.heart),
     (ActiveAgent.diet, '拍饮食', LucideIcons.utensils),
     (ActiveAgent.medication, '药管家', LucideIcons.pill),
-    (ActiveAgent.report, '看报告', LucideIcons.fileText),
+    (ActiveAgent.report, '报告分析', LucideIcons.fileText),
     (ActiveAgent.exercise, '运动', LucideIcons.trendingUp),
   ];
 
@@ -139,16 +140,16 @@ class _HomePageState extends ConsumerState<HomePage> {
           return GestureDetector(
             onTap: () => ref.read(chatProvider.notifier).triggerAgent(agent, label),
             child: Container(
-              padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 6),
+              padding: const EdgeInsets.symmetric(horizontal: 14, vertical: 8),
               decoration: BoxDecoration(
                 color: Colors.white,
-                borderRadius: BorderRadius.circular(16),
+                borderRadius: BorderRadius.circular(18),
                 boxShadow: AppColors.cardShadowLight,
               ),
               child: Row(mainAxisSize: MainAxisSize.min, children: [
-                Icon(icon, size: 15, color: AppColors.primary),
-                const SizedBox(width: 4),
-                Text(label, style: const TextStyle(fontSize: 13, fontWeight: FontWeight.w500, color: AppColors.primary)),
+                Icon(icon, size: 17, color: AppColors.textPrimary),
+                const SizedBox(width: 5),
+                Text(label, style: const TextStyle(fontSize: 15, fontWeight: FontWeight.w600, color: AppColors.textPrimary)),
               ]),
             ),
           );
@@ -194,7 +195,7 @@ class _HomePageState extends ConsumerState<HomePage> {
           onTap: () => _showAttachmentPicker(context),
           child: const Padding(
             padding: EdgeInsets.only(bottom: 10),
-            child: Icon(LucideIcons.paperclip, size: 24, color: AppColors.textSecondary),
+            child: Icon(LucideIcons.plus, size: 24, color: AppColors.textSecondary),
           ),
         ),
         const SizedBox(width: 8),
@@ -231,7 +232,7 @@ class _HomePageState extends ConsumerState<HomePage> {
             width: 40, height: 40,
             margin: EdgeInsets.only(bottom: _pickedImagePath != null ? 0 : 4),
             decoration: BoxDecoration(
-              color: AppColors.primary,
+              color: AppColors.blueMeasure,
               borderRadius: BorderRadius.circular(20),
             ),
             child: const Icon(LucideIcons.send, size: 20, color: Colors.white),