清理全局角色残留并修复项目权限判断

backend/app/api/v1/project_milestones.py

@@ -3,7 +3,7 @@ import uuid
 from fastapi import APIRouter, Depends, HTTPException, status
 from sqlalchemy.ext.asyncio import AsyncSession
 
-from app.core.deps import get_current_user, get_db_session, require_study_not_locked, require_api_permission
+from app.core.deps import get_operator_role_label, get_current_user, get_db_session, require_study_not_locked, require_api_permission
 from app.crud import audit as audit_crud
 from app.crud import project_milestone as milestone_crud
 from app.crud import study as study_crud
@@ -69,6 +69,6 @@ async def update_project_milestone(
         action="UPDATE_PROJECT_MILESTONE",
         detail=f"项目里程碑 {milestone_id} 已更新",
         operator_id=current_user.id,
-        operator_role=current_user.role,
+        operator_role=await get_operator_role_label(db, study_id, current_user),
     )
     return ProjectMilestoneRead.model_validate(item)