💄 style(dashboard): 调整仪表盘网格布局样式

- 移除auto-rows-fr属性，优化仪表盘区域的自动行高布局

src/client/big-shadcn/pages/HomePage.tsx

@@ -393,7 +393,7 @@ const ScanningLine = () => (
 
 // 主仪表盘组件
 const DashboardGrid = () => (
-  <div className="flex-1 p-4 md:p-8 grid grid-cols-12 gap-4 auto-rows-fr">
+  <div className="flex-1 p-4 md:p-8 grid grid-cols-12 gap-4">
     {/* 顶部标题区 */}
     <motion.div 
       className="col-span-12 h-20"