修复(权限管理)：统一 PM 系统导航与权限校验

frontend/src/router/index.ts

@@ -438,7 +438,7 @@ const routes: RouteRecordRaw[] = [
         path: "permissions/project",
         name: "AdminPermissionsProject",
         component: PermissionManagement,
-        meta: { title: "项目权限配置", systemPermission: SYSTEM_PERMISSION_PROJECT_CONFIG },
+        meta: { title: "项目访问控制", systemPermission: SYSTEM_PERMISSION_PROJECT_CONFIG },
       },
     ],
   },
@@ -592,8 +592,14 @@ router.beforeEach(async (to, _from, next) => {
   }
 
   if (isDesktopRuntime && token && !isAdmin && to.path.startsWith("/admin")) {
-    next({ path: DESKTOP_PROJECT_ENTRY_PATH });
-    return;
+    const hasPmProject = studyStore.currentStudyRole === "PM" || (studyStore.currentStudy as any)?.role_in_study === "PM";
+    if (!hasPmProject) await studyStore.ensureDefaultPmStudy().catch(() => {});
+    const canAccessProjectManagement = studyStore.currentStudyRole === "PM" || (studyStore.currentStudy as any)?.role_in_study === "PM";
+    if (!canAccessProjectManagement) {
+      next({ path: DESKTOP_PROJECT_ENTRY_PATH });
+      return;
+    }
+    if (!studyStore.currentPermissions) await studyStore.loadCurrentStudyPermissions().catch(() => {});
   }
 
   if (isDesktopRuntime && token && isAdmin && to.path.startsWith("/admin") && studyStore.currentStudy) {