移除示例项目初始化并修复前后端稳定性问题

frontend/src/store/study.test.ts

@@ -0,0 +1,70 @@
+import { beforeEach, describe, expect, it, vi } from "vitest";
+import { createPinia, setActivePinia } from "pinia";
+
+const fetchStudies = vi.fn();
+
+vi.mock("../api/studies", () => ({
+  fetchStudies,
+}));
+
+type StorageLike = {
+  getItem: (key: string) => string | null;
+  setItem: (key: string, value: string) => void;
+  removeItem: (key: string) => void;
+  clear: () => void;
+};
+
+const createStorage = (): StorageLike => {
+  const data = new Map<string, string>();
+  return {
+    getItem: (key) => data.get(key) ?? null,
+    setItem: (key, value) => {
+      data.set(key, String(value));
+    },
+    removeItem: (key) => {
+      data.delete(key);
+    },
+    clear: () => {
+      data.clear();
+    },
+  };
+};
+
+describe("study store startup rehydration", () => {
+  beforeEach(() => {
+    setActivePinia(createPinia());
+    fetchStudies.mockReset();
+    Object.defineProperty(window, "localStorage", {
+      value: createStorage(),
+      configurable: true,
+    });
+  });
+
+  it("clears a stale persisted study when the backend no longer has any studies", async () => {
+    window.localStorage.setItem("ctms_last_login_email", "admin@example.com");
+    window.localStorage.setItem(
+      "ctms_current_study",
+      JSON.stringify({
+        id: "deleted-study",
+        code: "DEMO-CTMS",
+        name: "示例临床试验项目",
+      })
+    );
+    fetchStudies.mockResolvedValue({
+      data: {
+        items: [],
+      },
+    });
+
+    const { useStudyStore } = await import("./study");
+    const study = useStudyStore();
+    study.loadCurrentStudy();
+
+    expect(study.currentStudy?.id).toBe("deleted-study");
+
+    await study.rehydrateStudyForLastUser();
+
+    expect(study.currentStudy).toBeNull();
+    expect(window.localStorage.getItem("ctms_current_study")).toBeNull();
+  });
+});