项目里程碑初步优化

frontend/src/store/auth.ts

@@ -22,7 +22,10 @@ export const useAuthStore = defineStore("auth", () => {
       // 避免锁屏态下 fetchMe 被请求拦截
       useSessionStore().unlock();
       localStorage.setItem(LAST_LOGIN_EMAIL_KEY, email);
-      await fetchMeAction();
+      const me = await fetchMeAction();
+      const studyStore = useStudyStore();
+      const userKey = me?.email || email;
+      await studyStore.restoreStudyForUser(userKey, { preferActive: me?.role === "ADMIN" });
       forceLogin.value = false;
     } finally {
       loading.value = false;
@@ -39,11 +42,13 @@ export const useAuthStore = defineStore("auth", () => {
   };
 
   const logout = () => {
+    const studyStore = useStudyStore();
+    const userKey = user.value?.email || localStorage.getItem(LAST_LOGIN_EMAIL_KEY) || "";
+    studyStore.rememberCurrentStudyForUser(userKey);
     token.value = null;
     user.value = null;
     forceLogin.value = false;
     clearToken();
-    const studyStore = useStudyStore();
     studyStore.clearCurrentStudy();
   };