接单平台分类管理完善：抢单大厅分类筛选与分类 CRUD

- 抢单大厅新增分类 Tab 筛选（仅显示启用分类，支持按分类查询工单）
- 管理端分类面板支持编辑、启用/停用切换、删除（被工单/规则引用时禁止删除）
- 后端工单列表支持 categoryId 筛选，大厅接口返回分类列表

apps/frontend/src/pages/worker/WorkerHallPage.tsx

@@ -12,6 +12,7 @@ import {
   Pagination,
   Space,
   Spin,
+  Tabs,
   Tag,
   Typography,
 } from 'antd'
@@ -37,14 +38,16 @@ export default function WorkerHallPage() {
   const queryClient = useQueryClient()
   const [keywordInput, setKeywordInput] = useState('')
   const [keyword, setKeyword] = useState('')
+  const [categoryId, setCategoryId] = useState(0)
   const [page, setPage] = useState(1)
   const [pageSize, setPageSize] = useState(20)
   const [grabbingId, setGrabbingId] = useState(0)
   const [detailOrder, setDetailOrder] = useState<WorkOrder | null>(null)
 
   const ordersQuery = useQuery({
-    queryKey: ['worker-hall-orders', keyword, page, pageSize],
-    queryFn: () => fetchWorkerHallOrders({ keyword, page, pageSize }),
+    queryKey: ['worker-hall-orders', keyword, categoryId, page, pageSize],
+    queryFn: () =>
+      fetchWorkerHallOrders({ keyword, page, pageSize, categoryId: categoryId || undefined }),
     retry: false,
   })
 
@@ -94,6 +97,7 @@ export default function WorkerHallPage() {
 
   const orders = ordersQuery.data?.data.items || []
   const pagination = ordersQuery.data?.data.pagination
+  const categories = ordersQuery.data?.data.categories || []
   const worker = profileQuery.data?.data.worker
   const activeCount = hallSummaryQuery.data?.activeCount || 0
   const pendingAcceptanceCount = hallSummaryQuery.data?.pendingAcceptanceCount || 0
@@ -210,6 +214,24 @@ export default function WorkerHallPage() {
           ))}
         </div>
 
+        {categories.length > 0 ? (
+          <Tabs
+            size="small"
+            activeKey={String(categoryId)}
+            items={[
+              { key: '0', label: '全部' },
+              ...categories.map((category) => ({
+                key: String(category.categoryId),
+                label: category.name,
+              })),
+            ]}
+            onChange={(nextKey) => {
+              setCategoryId(Number(nextKey) || 0)
+              setPage(1)
+            }}
+          />
+        ) : null}
+
         {shouldWarn ? (
           <Alert
             className="worker-hall-warning"