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/admin_drawer.dart

@@ -15,7 +15,7 @@ class AdminDrawer extends ConsumerWidget {
     return Drawer(
       width: MediaQuery.of(context).size.width * 0.8,
       child: Container(
-        color: AppColors.background,
+        decoration: const BoxDecoration(gradient: AppColors.drawerGradient),
         child: SafeArea(
           child: Column(
             children: [
@@ -23,10 +23,10 @@ class AdminDrawer extends ConsumerWidget {
                 margin: const EdgeInsets.all(14),
                 padding: const EdgeInsets.all(16),
                 decoration: BoxDecoration(
-                  color: Colors.white,
+                  gradient: AppColors.softGlassGradient,
                   borderRadius: BorderRadius.circular(20),
-                  border: Border.all(color: AppColors.border),
-                  boxShadow: AppColors.cardShadowLight,
+                  border: Border.all(color: AppColors.borderLight),
+                  boxShadow: AppColors.cardShadow,
                 ),
                 child: Row(
                   children: [
@@ -36,6 +36,7 @@ class AdminDrawer extends ConsumerWidget {
                       decoration: BoxDecoration(
                         gradient: AppColors.primaryGradient,
                         borderRadius: BorderRadius.circular(18),
+                        boxShadow: AppColors.buttonShadow,
                       ),
                       child: const Icon(
                         Icons.admin_panel_settings,
@@ -135,7 +136,7 @@ class _MenuItem extends StatelessWidget {
     return Padding(
       padding: const EdgeInsets.symmetric(horizontal: 14, vertical: 4),
       child: Material(
-        color: selected ? AppColors.primarySoft : Colors.white,
+        color: Colors.transparent,
         borderRadius: BorderRadius.circular(14),
         child: InkWell(
           borderRadius: BorderRadius.circular(14),
@@ -143,14 +144,22 @@ class _MenuItem extends StatelessWidget {
           child: Container(
             padding: const EdgeInsets.symmetric(horizontal: 14, vertical: 12),
             decoration: BoxDecoration(
+              gradient: selected
+                  ? AppColors.primaryGradient
+                  : AppColors.surfaceGradient,
               borderRadius: BorderRadius.circular(14),
               border: Border.all(
-                color: selected ? AppColors.primaryLight : AppColors.border,
+                color: selected
+                    ? AppColors.primaryLight
+                    : AppColors.borderLight,
               ),
+              boxShadow: selected
+                  ? AppColors.buttonShadow
+                  : AppColors.cardShadowLight,
             ),
             child: Row(
               children: [
-                Icon(icon, color: color, size: 20),
+                Icon(icon, color: selected ? Colors.white : color, size: 20),
                 const SizedBox(width: 12),
                 Expanded(
                   child: Text(
@@ -158,7 +167,7 @@ class _MenuItem extends StatelessWidget {
                     style: TextStyle(
                       fontSize: 15,
                       fontWeight: FontWeight.w700,
-                      color: color,
+                      color: selected ? Colors.white : color,
                     ),
                   ),
                 ),