test: T0 前置验证——Dexie 存储冒烟测试（fake-indexeddb）

Author: Aparencia

client/package-lock.json

@@ -105,6 +105,7 @@
     "electron": "^35.7.5",
     "electron-builder": "^25.1.8",
     "electron-rebuild": "^3.2.9",
+    "fake-indexeddb": "^6.2.5",
     "jsdom": "^29.1.1",
     "oxlint": "^1.71.0",
     "postcss": "^8.5.16",

client/package.json

@@ -0,0 +1,61 @@
+// @vitest-environment jsdom
+/**
+ * PWA Dexie 存储冒烟测试（T0.3 前置验证）
+ *
+ * @ai-context: 用 fake-indexeddb 在 jsdom 中真实初始化 IndexedDB，验证
+ * 'keban' 库 25 版本 schema 可 open、核心表（notes/pomodoroSessions/
+ * classroomNotes/offlineQueue/crdtDocs）可写读、createAllStores() PWA 分支
+ * 返回 Dexie 存储。现有单测均 vi.mock 掉 db，schema 升级链从未真实验证——
+ * 本冒烟是 PWA 移动端存储地基的最低保障。
+ * @ai-context EN: real IndexedDB smoke test via fake-indexeddb in jsdom —
+ * verifies the 25-version 'keban' schema opens, core tables read/write, and
+ * createAllStores() resolves to Dexie-backed stores under the PWA branch.
+ */
+import 'fake-indexeddb/auto';
+import { describe, it, expect, beforeAll } from 'vitest';
+import { db } from './database';
+import { createAllStores, getRuntimeEnvironment } from './storageFactory';
+import type { Note } from '@/types/models';
+
+describe('Dexie PWA 存储冒烟（T0.3）', () => {
+  beforeAll(async () => {
+    await db.open();
+  });
+
+  it('schema open 成功且库名/版本正确', () => {
+    expect(db.name).toBe('keban');
+    expect(db.verno).toBe(25);
+    expect(db.notes).toBeDefined();
+    expect(db.pomodoroSessions).toBeDefined();
+    expect(db.classroomNotes).toBeDefined();
+    expect(db.offlineQueue).toBeDefined();
+    expect(db.crdtDocs).toBeDefined();
+  });
+
+  it('PWA 运行时判定（jsdom 无 electronAPI）', () => {
+    expect(getRuntimeEnvironment()).toBe('pwa');
+  });
+
+  it('notes 表真实读写', async () => {
+    const id = 'smoke-note-1';
+    await db.notes.put({
+      id,
+      title: '冒烟',
+      createdAt: 1,
+      updatedAt: 1,
+      tags: [],
+      pinned: false,
+    } as unknown as Note);
+    const got = await db.notes.get(id);
+    expect(got?.title).toBe('冒烟');
+    await db.notes.delete(id);
+    expect(await db.notes.get(id)).toBeUndefined();
+  });
+
+  it('createAllStores PWA 分支返回可用存储', async () => {
+    const stores = createAllStores();
+    expect(await stores.notes.count()).toBe(0);
+    expect(await stores.pomodoroSessions.count()).toBe(0);
+    expect(await stores.offlineQueue.count()).toBe(0);
+  });
+});