chore: configure dev ports (backend:3001, frontend:3000 + proxy)

frontend/src/api/index.ts

@@ -1,7 +1,7 @@
 import axios from 'axios';
 
 const api = axios.create({
-  baseURL: import.meta.env.PROD ? '/api' : `http://localhost:${import.meta.env.VITE_API_PORT || 3002}/api`,
+  baseURL: '/api',
   timeout: 10000,
 });
 

frontend/vite.config.ts

@@ -4,6 +4,15 @@ import react from '@vitejs/plugin-react'
 // https://vite.dev/config/
 export default defineConfig({
   plugins: [react()],
+  server: {
+    port: 3000,
+    proxy: {
+      '/api': {
+        target: 'http://localhost:3001',
+        changeOrigin: true,
+      },
+    },
+  },
   optimizeDeps: {
     include: [
       'dayjs',