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/src/api/auth.ts

@@ -0,0 +1,55 @@
+import client from './client';
+
+export interface LoginRequest {
+  username: string;
+  password: string;
+}
+
+export interface UserInfo {
+  id: string;
+  username: string;
+  email?: string;
+  phone?: string;
+  display_name?: string;
+  avatar_url?: string;
+  status: string;
+  roles: RoleInfo[];
+  version: number;
+}
+
+export interface RoleInfo {
+  id: string;
+  name: string;
+  code: string;
+  description?: string;
+  is_system: boolean;
+}
+
+export interface LoginResponse {
+  access_token: string;
+  refresh_token: string;
+  expires_in: number;
+  user: UserInfo;
+}
+
+export async function login(req: LoginRequest): Promise<LoginResponse> {
+  const { data } = await client.post<{ success: boolean; data: LoginResponse }>(
+    '/auth/login',
+    req
+  );
+  return data.data;
+}
+
+export async function logout(): Promise<void> {
+  await client.post('/auth/logout');
+}
+
+export async function changePassword(
+  currentPassword: string,
+  newPassword: string
+): Promise<void> {
+  await client.post('/auth/change-password', {
+    current_password: currentPassword,
+    new_password: newPassword,
+  });
+}