中文：收口权限与中心/立项配置改造

frontend/src/components/attachments/AttachmentList.vue

@@ -67,6 +67,7 @@ import AttachmentUploader from "./AttachmentUploader.vue";
 import { formatFileSize } from "./attachmentUtils";
 import { useAuthStore } from "../../store/auth";
 import { useStudyStore } from "../../store/study";
+import { getProjectRole, isSystemAdmin } from "../../utils/roles";
 import { listMembers } from "../../api/members";
 import { displayDateTime, displayUser, getMemberDisplayName, getUserDisplayName } from "../../utils/display";
 import { TEXT } from "../../locales";
@@ -203,11 +204,10 @@ const preview = (row: any) => {
 const canDelete = (row: any) => {
   if (props.readonly) return false;
   const userId = auth.user?.id;
-  const role = auth.user?.role;
-  const projectRole = study.currentStudyRole || (study.currentStudy as any)?.role_in_study;
+  const projectRole = getProjectRole(study.currentStudy, study.currentStudyRole);
   const ownerId =
     row.uploaded_by_id || (row.uploaded_by && typeof row.uploaded_by === "object" ? row.uploaded_by.id : row.uploaded_by);
-  return userId === ownerId || role === "ADMIN" || projectRole === "PM";
+  return userId === ownerId || isSystemAdmin(auth.user) || projectRole === "PM";
 };
 
 const remove = async (row: any) => {