feat(theme): 校正 K26 预览色板与导航

lib/core/widgets/glass_panel.dart

@@ -13,7 +13,7 @@ class GlassPanel extends StatelessWidget {
     super.key,
     required this.child,
     this.radius = AppDimens.glassRadius,
-    this.blur = AppDimens.glassBlur,
+    this.blur = 10,
     this.padding,
     this.borderColor = AppColors.glassBorder,
     this.gradient,