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/common_widgets.dart

@@ -23,7 +23,9 @@ class GradientBorderButton extends StatelessWidget {
     return Container(
       height: height,
       decoration: BoxDecoration(
-        gradient: isSuccess ? AppColors.primaryGradient : AppColors.primaryGradient,
+        gradient: isSuccess
+            ? AppColors.calmHealthGradient
+            : AppColors.primaryGradient,
         borderRadius: BorderRadius.circular(14),
         boxShadow: AppColors.buttonShadow,
       ),
@@ -78,9 +80,10 @@ class CardActionButton extends StatelessWidget {
       child: Container(
         padding: const EdgeInsets.symmetric(horizontal: 14, vertical: 10),
         decoration: BoxDecoration(
-          color: AppColors.cardInner,
+          gradient: AppColors.surfaceGradient,
           borderRadius: BorderRadius.circular(12),
           border: Border.all(color: AppColors.borderLight),
+          boxShadow: AppColors.cardShadowLight,
         ),
         child: Row(
           mainAxisSize: MainAxisSize.min,
@@ -109,11 +112,19 @@ class SwipeDeleteTile extends StatefulWidget {
   final VoidCallback onDelete;
   final VoidCallback? onTap;
   final EdgeInsetsGeometry margin;
-  const SwipeDeleteTile({super.key, required this.child, required this.onDelete, this.onTap, this.margin = const EdgeInsets.symmetric(horizontal: 16, vertical: 4)});
-  @override State<SwipeDeleteTile> createState() => _SwipeDeleteTileState();
+  const SwipeDeleteTile({
+    super.key,
+    required this.child,
+    required this.onDelete,
+    this.onTap,
+    this.margin = const EdgeInsets.symmetric(horizontal: 16, vertical: 4),
+  });
+  @override
+  State<SwipeDeleteTile> createState() => _SwipeDeleteTileState();
 }
 
-class _SwipeDeleteTileState extends State<SwipeDeleteTile> with SingleTickerProviderStateMixin {
+class _SwipeDeleteTileState extends State<SwipeDeleteTile>
+    with SingleTickerProviderStateMixin {
   double _dx = 0;
   static const _maxSlide = 80.0;
   static const _threshold = 24.0; // 30% of 80
@@ -130,31 +141,53 @@ class _SwipeDeleteTileState extends State<SwipeDeleteTile> with SingleTickerProv
     }
   }
 
-  @override Widget build(BuildContext context) {
+  @override
+  Widget build(BuildContext context) {
     final isSwiped = _dx < 0;
     return Padding(
       padding: widget.margin,
-      child: Stack(children: [
-        Positioned.fill(child: Container(
-          decoration: BoxDecoration(color: AppColors.error, borderRadius: BorderRadius.circular(16)),
-          child: const Align(
-            alignment: Alignment.centerRight,
-            child: Padding(padding: EdgeInsets.only(right: 20), child: Icon(Icons.delete_outline, color: AppColors.textOnGradient, size: 28)),
+      child: Stack(
+        children: [
+          Positioned.fill(
+            child: Container(
+              decoration: BoxDecoration(
+                color: AppColors.error,
+                borderRadius: BorderRadius.circular(16),
+              ),
+              child: const Align(
+                alignment: Alignment.centerRight,
+                child: Padding(
+                  padding: EdgeInsets.only(right: 20),
+                  child: Icon(
+                    Icons.delete_outline,
+                    color: AppColors.textOnGradient,
+                    size: 28,
+                  ),
+                ),
+              ),
+            ),
           ),
-        )),
-        GestureDetector(
-          behavior: isSwiped ? HitTestBehavior.opaque : HitTestBehavior.deferToChild,
-          onTap: isSwiped ? () { widget.onDelete(); setState(() => _dx = 0); } : widget.onTap,
-          onHorizontalDragUpdate: _onDragUpdate,
-          onHorizontalDragEnd: _onDragEnd,
-          child: Transform.translate(
-            offset: Offset(_dx, 0),
-            child: isSwiped
-                ? AbsorbPointer(absorbing: true, child: widget.child)
-                : widget.child,
+          GestureDetector(
+            behavior: isSwiped
+                ? HitTestBehavior.opaque
+                : HitTestBehavior.deferToChild,
+            onTap: isSwiped
+                ? () {
+                    widget.onDelete();
+                    setState(() => _dx = 0);
+                  }
+                : widget.onTap,
+            onHorizontalDragUpdate: _onDragUpdate,
+            onHorizontalDragEnd: _onDragEnd,
+            child: Transform.translate(
+              offset: Offset(_dx, 0),
+              child: isSwiped
+                  ? AbsorbPointer(absorbing: true, child: widget.child)
+                  : widget.child,
+            ),
           ),
-        ),
-      ]),
+        ],
+      ),
     );
   }
 }
@@ -180,14 +213,12 @@ class IconBox extends StatelessWidget {
       width: size,
       height: size,
       decoration: BoxDecoration(
-        color: backgroundColor ?? AppColors.iconBg,
+        gradient: backgroundColor == null ? AppColors.calmHealthGradient : null,
+        color: backgroundColor,
         borderRadius: BorderRadius.circular(size / 3),
+        boxShadow: AppColors.cardShadowLight,
       ),
-      child: Icon(
-        icon,
-        size: size * 0.55,
-        color: iconColor ?? AppColors.primary,
-      ),
+      child: Icon(icon, size: size * 0.55, color: iconColor ?? Colors.white),
     );
   }
 }