feat: load API base URL from env

.env.example

@@ -0,0 +1,5 @@
+# Rename this file to .env and set the API base URL for your environment
+# Example:
+# VITE_API_BASE_URL=http://localhost:8000
+VITE_API_BASE_URL=https://api.example.com
+

src/lib/api.ts

@@ -1,8 +1,7 @@
 import axios from 'axios'
 
 const api = axios.create({
-    baseURL: 'https://api.biryu2000.kr',
-    // baseURL: 'http://localhost:8000',
+    baseURL: import.meta.env.VITE_API_BASE_URL,
 })
 
 // 요청 시 토큰 자동 추가