Step F8：药品管理（IMP）

frontend/src/api/axios.ts

@@ -3,6 +3,7 @@ import { ElMessage } from "element-plus";
 import router from "../router";
 import { getToken, clearToken } from "../utils/auth";
 import type { ApiError } from "../types/api";
+import { useStudyStore } from "../store/study";
 
 const instance: AxiosInstance = axios.create({
   baseURL: "/",
@@ -23,6 +24,16 @@ instance.interceptors.response.use(
   async (error: AxiosError<ApiError>) => {
     const status = error.response?.status;
     const data = error.response?.data;
+    // 如果当前项目不存在或已失效，清理项目并跳到项目列表
+    if (status === 404 && typeof data?.message === "string" && data.message.toLowerCase().includes("study")) {
+      try {
+        const studyStore = useStudyStore();
+        studyStore.clearCurrentStudy();
+      } catch {
+        /* ignore */
+      }
+      router.push("/studies");
+    }
     if (status === 401) {
       clearToken();
       ElMessage.error(data?.message || "登录已过期，请重新登录");