config: add Vite development server host, port, and strictPort settings

Author: HackyCoder0951

frontend/vite.config.ts

@@ -3,5 +3,10 @@ import react from '@vitejs/plugin-react'
 
 // https://vite.dev/config/
 export default defineConfig({
+  server: {
+    host: '0.0.0.0',
+    port: 5173,
+    strictPort: true
+  },
   plugins: [react()],
 })