feat(miniprogram): service 层测试框架搭建

- 新增 __tests__/helpers/: mock-taro (Taro API mock) + mock-api (request mock)
- 示例测试: patient.test.ts (3 用例) + appointment.test.ts (9 用例)
- 覆盖 list/create/update/cancel/calendar 等核心场景
- 全部 42 测试通过（含 4 个已有 BLE 测试）

apps/miniprogram/__tests__/helpers/index.ts

@@ -0,0 +1,2 @@
+export { mockTaro, createTaroMock } from './mock-taro';
+export { mockApi, apiOk } from './mock-api';

apps/miniprogram/__tests__/helpers/mock-api.ts

@@ -0,0 +1,19 @@
+import { vi } from 'vitest';
+
+// 顶层 mock — vitest 自动提升，无警告
+vi.mock('@/services/request', () => ({
+  api: {
+    get: vi.fn(),
+    post: vi.fn(),
+    put: vi.fn(),
+    delete: vi.fn(),
+  },
+  clearRequestCache: vi.fn(),
+  markLoggingOut: vi.fn(),
+  clearLoggingOut: vi.fn(),
+}));
+
+/** 创建一个成功的 API 响应 */
+export function apiOk<T>(data: T) {
+  return Promise.resolve(data);
+}

apps/miniprogram/__tests__/helpers/mock-taro.ts

@@ -0,0 +1,50 @@
+import { vi } from 'vitest';
+
+/**
+ * Taro API mock — 所有小程序测试共享的基础 mock。
+ * storage 使用内存 Map，可在 beforeEach 中 clear。
+ */
+export function createTaroMock() {
+  const storage = new Map<string, any>();
+
+  return {
+    storage,
+    mock: {
+      default: {
+        getStorageSync: vi.fn((key: string) => storage.get(key) ?? ''),
+        setStorageSync: vi.fn((key: string, val: any) => storage.set(key, val)),
+        removeStorageSync: vi.fn((key: string) => storage.delete(key)),
+        showToast: vi.fn(),
+        hideToast: vi.fn(),
+        showLoading: vi.fn(),
+        hideLoading: vi.fn(),
+        request: vi.fn(),
+        reLaunch: vi.fn(),
+        navigateTo: vi.fn(),
+        redirectTo: vi.fn(),
+        switchTab: vi.fn(),
+        getCurrentPages: vi.fn(() => []),
+        getAccountInfoSync: vi.fn(() => ({ miniProgram: { envVersion: 'develop' } })),
+        getSystemInfoSync: vi.fn(() => ({
+          windowHeight: 800,
+          windowWidth: 375,
+          pixelRatio: 2,
+        })),
+      },
+    },
+  };
+}
+
+/** 一键 mock @tarojs/taro — 在 vi.mock 回调中使用 */
+export function mockTaro() {
+  const { storage, mock } = createTaroMock();
+
+  vi.mock('@tarojs/taro', () => mock);
+  vi.mock('@/utils/secure-storage', () => ({
+    secureGet: vi.fn((key: string) => storage.get(key) ?? ''),
+    secureSet: vi.fn((key: string, val: string) => storage.set(key, val)),
+    secureRemove: vi.fn((key: string) => storage.delete(key)),
+  }));
+
+  return { storage };
+}