修复筛选时间时的报错

src/app/(root)/balance/page.tsx

@@ -205,7 +205,7 @@ export default function BalancePage() {
                   <div className="flex items-center gap-1">
                     <span
                       className={`font-semibold ${
-                        isPositive ? "text-green-600" : "text-red-600"
+                        isPositive ? "text-red-600" : "text-green-600"
                       }`}
                     >
                       {isPositive ? "+" : ""}
@@ -237,11 +237,15 @@ export default function BalancePage() {
             {
               header: "创建时间",
               accessorKey: "created_at",
-              cell: ({ row }) =>
-                format(
-                  new Date(row.original.created_at),
-                  "yyyy-MM-dd HH:mm:ss",
-                ),
+              cell: ({ row }) => {
+                const createdAt = row.original.created_at;
+                if (!createdAt) return <span>-</span>;
+                
+                const date = new Date(createdAt);
+                if (isNaN(date.getTime())) return <span>-</span>;
+                
+                return format(date, "yyyy-MM-dd HH:mm:ss");
+              },
             },
           ]}
         />