中文：收口权限与中心/立项配置改造

frontend/src/views/StudyHome.vue

@@ -116,6 +116,7 @@ import QuickActions from "../components/QuickActions.vue";
 import { List, Warning, Money } from "@element-plus/icons-vue";
 import StateEmpty from "../components/StateEmpty.vue";
 import { displayEnum } from "../utils/display";
+import { getProjectRole, isSystemAdmin } from "../utils/roles";
 import { TEXT } from "../locales";
 import type { NotificationItem } from "../types/notifications";
 import { useRouter } from "vue-router";
@@ -143,7 +144,11 @@ const milestoneCompletionRate = computed(() => {
   return TEXT.modules.projectOverview.progressLabel.replace("{rate}", `${(rate * 100).toFixed(0)}%`);
 });
 
-const roleLabel = computed(() => displayEnum(TEXT.enums.userRole, auth.user?.role));
+const projectRole = computed(() => {
+  if (isSystemAdmin(auth.user)) return "ADMIN";
+  return getProjectRole(study.currentStudy, study.currentStudyRole);
+});
+const roleLabel = computed(() => displayEnum(TEXT.enums.userRole, projectRole.value));
 
 const formatAmount = (val: number) => {
   return new Intl.NumberFormat('zh-CN', { minimumFractionDigits: 2 }).format(val);