feat: 添加管理端前端 (HMS 基座 React 管理面板)

- 从 HMS 基座复制 apps/web/ (React + Ant Design + Vite + TypeScript)
- 管理端自动代理 API 到 localhost:3000 (vite.config.ts)
- 更新 scripts/dev.sh 支持三端启动: backend/admin/app
- 登录验证通过, 用户管理/角色权限/审计日志等页面正常
- 添加 .gitignore 排除 node_modules/dist

apps/web/src/api/languages.ts

@@ -0,0 +1,34 @@
+import client from './client';
+
+// --- Types ---
+
+export interface LanguageInfo {
+  code: string;
+  name: string;
+  is_active: boolean;
+}
+
+export interface UpdateLanguageRequest {
+  is_active: boolean;
+  name?: string;
+}
+
+// --- API Functions ---
+
+export async function listLanguages(): Promise<LanguageInfo[]> {
+  const { data } = await client.get<{ success: boolean; data: LanguageInfo[] }>(
+    '/config/languages',
+  );
+  return data.data;
+}
+
+export async function updateLanguage(
+  code: string,
+  req: UpdateLanguageRequest,
+): Promise<LanguageInfo> {
+  const { data } = await client.put<{ success: boolean; data: LanguageInfo }>(
+    `/config/languages/${code}`,
+    req,
+  );
+  return data.data;
+}