fix: 欢迎卡片UI优化 + 蓝牙录入按钮 + 多处修复

- 欢迎卡片：去掉白框圆角错位、图片满宽、按钮去箭头改圆角居中
- 渐变actionOutlineGradient改紫蓝双色循环
- 新增健康Agent"蓝牙录入"按钮→蓝牙设备页
- "查看健康情况"改名"健康概览"
- 饮食编辑框删除bug修复(控制器缓存)
- 启动脚本加adb reverse自动转发
- 登录闪屏修复

health_app/lib/widgets/app_tab_chip.dart

@@ -23,10 +23,13 @@ class AppTabChip extends StatelessWidget {
         margin: const EdgeInsets.only(right: AppTheme.sSm),
         padding: const EdgeInsets.symmetric(horizontal: 14, vertical: 9),
         decoration: BoxDecoration(
-          color: selected ? AppColors.primary : Colors.white,
+          gradient: selected
+              ? AppColors.primaryGradient
+              : AppColors.surfaceGradient,
+          color: selected ? null : Colors.white,
           borderRadius: BorderRadius.circular(AppTheme.rPill),
           border: Border.all(
-            color: selected ? AppColors.primary : AppColors.border,
+            color: selected ? AppColors.primaryLight : AppColors.borderLight,
           ),
           boxShadow: selected
               ? AppColors.buttonShadow