feat: team org panel, admin CRUD, local deploy tools, bidirectional data sync

Add TeamMember model and APIs, team status UI, /admin page, local server bats,
and scripts to sync data between local PostgreSQL and Render.

Co-authored-by: Cursor <cursoragent@cursor.com>

frontend/src/lib/apiClient.ts

@@ -1,13 +1,10 @@
 import axios from 'axios';
+import { getApiBaseUrl } from './apiBase';
 
-// 개발: Vite 프록시 → /api (localhost:4000)
-// 배포: VITE_API_URL 미설정 시 Render 백엔드 기본값 사용
-const RENDER_API = 'https://eene-dashboard-backend.onrender.com';
-const baseURL = import.meta.env.VITE_API_URL
-  ? `${import.meta.env.VITE_API_URL}/api`
-  : import.meta.env.PROD
-    ? `${RENDER_API}/api`
-    : '/api';
+// 개발: Vite 프록시 /api → localhost:4000
+// 사설망 IP 접속: 자동으로 같은 IP:4000 백엔드
+// Vercel 배포: Render API (VITE_API_URL로 오버라이드 가능)
+const baseURL = getApiBaseUrl();
 
 export const apiClient = axios.create({
   baseURL,