chore: 干净 ERP 基座 — 删除 health/ai/wechat 业务代码

删除内容:
- 前端: health/(67文件), ai/(2文件), Copilot, MediaPicker, 相关API/Store/Hook
- 后端: wechat_handler, wechat_service, wechat_user entity, analytics handler, ai_workflow_seed
- 配置: WechatConfig, AppConfig.wechat, AuthState wechat 字段
- 启动: 微信凭据检查块, ensure_ai_workflows() 调用
- 迁移: 新增 m20260613_000170_drop_wechat_users.rs
- 脚本: api_test_health_alert.py, api_test_mp.py, mpsync.sh/ps1
- E2E: health-data page, flows/ 目录

保留: erp-core/auth/workflow/message/config/plugin + 基座前端 + 通用组件

apps/web/e2e/check-readiness.ts

@@ -0,0 +1,22 @@
+// apps/web/e2e/check-readiness.ts
+import type { FullConfig } from '@playwright/test';
+
+async function check(url: string, label: string): Promise<void> {
+  for (let i = 0; i < 5; i++) {
+    try {
+      const res = await fetch(url);
+      if (res.ok) return;
+    } catch { /* retry */ }
+    console.log(`⏳ ${label} 未就绪，等待重试 (${i + 1}/5)...`);
+    await new Promise((r) => setTimeout(r, 2000));
+  }
+  throw new Error(`❌ ${label} 未就绪: ${url}。请确认后端服务已启动 (cd crates/erp-server && cargo run)`);
+}
+
+export default async function globalSetup(_config: FullConfig) {
+  const apiBase = process.env.E2E_API_URL || 'http://localhost:3000';
+  const webBase = process.env.E2E_BASE_URL || 'http://localhost:5174';
+  await check(`${apiBase}/api/v1/health`, '后端 API');
+  await check(webBase, '前端 SPA');
+  console.log('✅ E2E 环境就绪');
+}