feat(admin-v2): wire Accounts table search to API params

- Add searchParams state connected to useQuery queryKey/queryFn
- Enable role and status columns as searchable select dropdowns
- Map username search field to backend 'search' param
- Add onSubmit/onReset callbacks on ProTable

admin-v2/src/pages/Accounts.tsx

@@ -40,10 +40,11 @@ export default function Accounts() {
   const [form] = Form.useForm()
   const [modalOpen, setModalOpen] = useState(false)
   const [editingId, setEditingId] = useState<string | null>(null)
+  const [searchParams, setSearchParams] = useState<Record<string, string>>({})
 
   const { data, isLoading } = useQuery({
-    queryKey: ['accounts'],
-    queryFn: ({ signal }) => accountService.list(signal),
+    queryKey: ['accounts', searchParams],
+    queryFn: ({ signal }) => accountService.list(searchParams, signal),
   })
 
   const updateMutation = useMutation({
@@ -68,21 +69,31 @@ export default function Accounts() {
   })
 
   const columns: ProColumns<AccountPublic>[] = [
-    { title: '用户名', dataIndex: 'username', width: 120 },
+    { title: '用户名', dataIndex: 'username', width: 120, tooltip: '搜索用户名、邮箱或显示名' },
     { title: '显示名', dataIndex: 'display_name', width: 120, hideInSearch: true },
     { title: '邮箱', dataIndex: 'email', width: 180 },
     {
       title: '角色',
       dataIndex: 'role',
       width: 120,
-      hideInSearch: true,
+      valueType: 'select',
+      valueEnum: {
+        super_admin: { text: '超级管理员' },
+        admin: { text: '管理员' },
+        user: { text: '用户' },
+      },
       render: (_, record) => <Tag color={roleColors[record.role]}>{roleLabels[record.role] || record.role}</Tag>,
     },
     {
       title: '状态',
       dataIndex: 'status',
       width: 100,
-      hideInSearch: true,
+      valueType: 'select',
+      valueEnum: {
+        active: { text: '正常', status: 'Success' },
+        disabled: { text: '已禁用', status: 'Default' },
+        suspended: { text: '已封禁', status: 'Error' },
+      },
       render: (_, record) => <Tag color={statusColors[record.status]}>{statusLabels[record.status] || record.status}</Tag>,
     },
     {
@@ -154,6 +165,21 @@ export default function Accounts() {
         rowKey="id"
         search={{}}
         toolBarRender={() => []}
+        onSubmit={(values) => {
+          const filtered: Record<string, string> = {}
+          for (const [k, v] of Object.entries(values)) {
+            if (v !== undefined && v !== null && v !== '') {
+              // Map 'username' search field to backend 'search' param
+              if (k === 'username') {
+                filtered.search = String(v)
+              } else {
+                filtered[k] = String(v)
+              }
+            }
+          }
+          setSearchParams(filtered)
+        }}
+        onReset={() => setSearchParams({})}
         pagination={{
           total: data?.total ?? 0,
           pageSize: data?.page_size ?? 20,