feat(task1): restructure directories for turborepo monorepo

- Move backend/ to apps/server/ via git mv
- Move frontend/ to apps/admin/ via git mv
- Create packages/typescript-config/ with base, nestjs, and react-vite presets

apps/admin/src/api/index.ts

@@ -0,0 +1,33 @@
+import axios from 'axios';
+
+const api = axios.create({
+  baseURL: '/api',
+  timeout: 10000,
+});
+
+api.interceptors.request.use((config) => {
+  const token = localStorage.getItem('token');
+  if (token) {
+    config.headers.Authorization = `Bearer ${token}`;
+  }
+  return config;
+});
+
+api.interceptors.response.use(
+  (res) => res.data,
+  (err) => {
+    if (err.response?.status === 401) {
+      localStorage.removeItem('token');
+      localStorage.removeItem('user');
+      localStorage.removeItem('permissions');
+      window.location.href = '/login';
+    }
+    if (err.response?.status === 403) {
+      const msg = err.response?.data?.message || '权限不足';
+      console.warn('[403]', msg);
+    }
+    return Promise.reject(err.response?.data || err);
+  },
+);
+
+export default api;