fix: UserAdminService.create_user 返回原始 user（含 id），路由转 profile

- 修复 create_user 后 write_audit 取 user.id 的 KeyError
- 22 受影响测试 + 全量 66 全绿

app/api/routers/rbac_admin.py

@@ -55,7 +55,7 @@ async def create_user(
     user = await UserAdminService(db).create_user(req, actor)
     await write_audit(db, action="user.create", resource="user", resource_id=user["id"],
                 detail=f"role={req.role}", user=actor, request=request)
-    return user
+    return await db.users.to_profile(user)
 
 
 def _port_for_role(role: str) -> str:

app/services/user_admin_service.py

@@ -47,7 +47,7 @@ class UserAdminService:
             sub_role=req.sub_role, org_id=req.org_id, region_id=req.region_id,
             name=req.nickname or req.username,
         )
-        return await self.db.users.to_profile(user)
+        return user
 
     async def set_user_role(self, actor: dict, user_id: str, role: str, sub_role: str, org_id: str, region_id: str) -> dict:
         """分配角色（含提权防护，同步主身份并失效旧令牌）。"""