feat:[FL-165][角色管理页面查询时合并角色和菜单请求]

将角色管理页面的角色和菜单两个独立API请求合并为单个请求，减少网络开销。

后端改动：
- 新增 RolesWithMenusResponse 响应模型
- 新增 list_roles_with_menus 服务函数
- 新增 GET /api/v1/admin/roles-with-menus 接口

前端改动：
- 更新 loadData 函数使用新的合并接口
- 减少从两个并发请求改为单个请求

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Co-authored-by: multica-agent <github@multica.ai>

api/app/api/v1/admin.py

@@ -14,6 +14,7 @@ from ...schemas.admin import (
     RoleListResponse,
     RoleMenuUpdateRequest,
     RolePublic,
+    RolesWithMenusResponse,
     SeedDefaultsResponse,
     RoleUpdateRequest,
 )
@@ -32,6 +33,7 @@ from ...services.legacy_admin_rbac_service import (
     list_permissions,
     list_role_menu_ids,
     list_roles,
+    list_roles_with_menus,
     replace_role_menus,
     update_menu,
     update_role,
@@ -50,6 +52,15 @@ def get_roles(
     return list_roles(db, keyword=keyword)
 
 
+@router.get("/roles-with-menus", response_model=RolesWithMenusResponse)
+def get_roles_with_menus(
+    keyword: str | None = Query(default=None),
+    _: CurrentUser = Depends(require_any_permission("role.read", "role.manage")),
+    db: Session = Depends(get_db),
+) -> RolesWithMenusResponse:
+    return list_roles_with_menus(db, keyword=keyword)
+
+
 @router.post("/roles", response_model=RolePublic)
 def create_role_endpoint(
     payload: RoleCreateRequest,

api/app/schemas/admin.py

@@ -128,4 +128,11 @@ class SeedDefaultsResponse(BaseModel):
     summary: dict[str, SeedCategorySummary] = Field(default_factory=dict)
 
 
+class RolesWithMenusResponse(BaseModel):
+    roles: list[RolePublic]
+    roles_total: int
+    menus: list[MenuPublic]
+    menus_total: int
+
+
 MenuTreeItem.model_rebuild()

api/app/services/legacy_admin_rbac_service.py

@@ -17,6 +17,7 @@ from ..schemas.admin import (
     RoleCreateRequest,
     RoleListResponse,
     RolePublic,
+    RolesWithMenusResponse,
     RoleUpdateRequest,
 )
 from .audit_service import compose_audit_detail, describe_changed_fields, summarize_values, write_audit_log
@@ -462,6 +463,18 @@ def list_menus(db: Session, keyword: str | None = None, status: str | None = Non
     return MenuListResponse(items=items, total=len(items))
 
 
+def list_roles_with_menus(db: Session, keyword: str | None = None) -> RolesWithMenusResponse:
+    """Get roles and menus in a single request to reduce network calls."""
+    roles_response = list_roles(db, keyword=keyword)
+    menus_response = list_menus(db)
+    return RolesWithMenusResponse(
+        roles=roles_response.items,
+        roles_total=roles_response.total,
+        menus=menus_response.items,
+        menus_total=menus_response.total,
+    )
+
+
 def get_menu_by_id(db: Session, menu_id: str) -> MenuPublic | None:
     normalized_menu_id = menu_id.strip()
     if not normalized_menu_id:

web/src/app/admin/roles/page.tsx

@@ -32,6 +32,13 @@ const AntCard = Card as unknown as ComponentType<CardProps>;
 
 type MenuListResponse = { items: MenuItem[]; total: number };
 
+type RolesWithMenusResponse = {
+  roles: RoleItem[];
+  roles_total: number;
+  menus: MenuItem[];
+  menus_total: number;
+};
+
 type RoleFormValues = {
   code: string;
   name: string;
@@ -90,27 +97,20 @@ export default function AdminRolesPage() {
     setError("");
     try {
       const keyword = searchKeyword.trim();
-      const roleUrl = keyword
-        ? `/api/v1/admin/roles?keyword=${encodeURIComponent(keyword)}`
-        : "/api/v1/admin/roles";
+      const url = keyword
+        ? `/api/v1/admin/roles-with-menus?keyword=${encodeURIComponent(keyword)}`
+        : "/api/v1/admin/roles-with-menus";
 
-      const [roleRes, menuRes] = await Promise.all([
-        fetchWithAuth(roleUrl),
-        fetchWithAuth("/api/v1/admin/menus"),
-      ]);
+      const response = await fetchWithAuth(url);
 
-      if (!roleRes.ok) {
-        throw new Error(await readApiError(roleRes));
-      }
-      if (!menuRes.ok) {
-        throw new Error(await readApiError(menuRes));
+      if (!response.ok) {
+        throw new Error(await readApiError(response));
       }
 
-      const rolePayload = (await roleRes.json()) as RoleListResponse;
-      const menuPayload = (await menuRes.json()) as MenuListResponse;
+      const payload = (await response.json()) as RolesWithMenusResponse;
 
-      setRoles(rolePayload.items);
-      setMenus(menuPayload.items);
+      setRoles(payload.roles);
+      setMenus(payload.menus);
     } catch (candidate) {
       setError(candidate instanceof Error ? candidate.message : "角色数据加载失败");
     } finally {