UX-2（操作级权限控制）

frontend/src/store/study.ts

@@ -3,13 +3,20 @@ import { ref } from "vue";
 import type { Study } from "../types/api";
 
 const STUDY_KEY = "ctms_current_study";
+const STUDY_ROLE_KEY = "ctms_current_study_role";
 
 export const useStudyStore = defineStore("study", () => {
   const currentStudy = ref<Study | null>(null);
+  const currentStudyRole = ref<string | null>(null);
 
   const setCurrentStudy = (study: Study) => {
     currentStudy.value = study;
+    const role = (study as any).role_in_study || (study as any).role || null;
+    currentStudyRole.value = role;
     localStorage.setItem(STUDY_KEY, JSON.stringify(study));
+    if (role) {
+      localStorage.setItem(STUDY_ROLE_KEY, role);
+    }
   };
 
   const loadCurrentStudy = () => {
@@ -21,16 +28,31 @@ export const useStudyStore = defineStore("study", () => {
         currentStudy.value = null;
       }
     }
+    const savedRole = localStorage.getItem(STUDY_ROLE_KEY);
+    currentStudyRole.value = savedRole || null;
   };
 
   const clearCurrentStudy = () => {
     currentStudy.value = null;
+    currentStudyRole.value = null;
     localStorage.removeItem(STUDY_KEY);
+    localStorage.removeItem(STUDY_ROLE_KEY);
+  };
+
+  const setCurrentStudyRole = (role: string | null) => {
+    currentStudyRole.value = role;
+    if (role) {
+      localStorage.setItem(STUDY_ROLE_KEY, role);
+    } else {
+      localStorage.removeItem(STUDY_ROLE_KEY);
+    }
   };
 
   return {
     currentStudy,
+    currentStudyRole,
     setCurrentStudy,
+    setCurrentStudyRole,
     loadCurrentStudy,
     clearCurrentStudy,
   };