test(mp): service 层测试扩展 — health + consultation + request

新增 3 个测试文件（+23 个测试用例），总计 9 文件 75 测试：
- request.test.ts: HTTP 方法、查询参数构建、缓存、错误处理
- health.test.ts: 体征录入字段映射、日常监测、阈值查找
- consultation.test.ts: 咨询会话/消息 CRUD、已读标记

- 添加 vitest setup.ts mock @tarojs/taro 和 @tarojs/runtime
- vitest.config.ts 增加 setupFiles 配置

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

apps/miniprogram/__tests__/setup.ts

@@ -0,0 +1,23 @@
+// Global setup for Taro runtime compatibility in tests
+// Mock @tarojs/taro before any module loads it
+import { vi } from 'vitest';
+
+vi.mock('@tarojs/taro', () => ({
+  default: {
+    getStorageSync: vi.fn(() => ''),
+    setStorageSync: vi.fn(),
+    removeStorageSync: vi.fn(),
+    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(() => []),
+  },
+}));
+
+vi.mock('@tarojs/runtime', () => ({}));