Fix: Remove all hard-coded URL in every component.

webpage/.env.example

@@ -0,0 +1,5 @@
+# API Base URL for backend services
+# For production deployment, set this to your backend API URL
+# Example: EXTERNAL_URL=https://api.yourdomain.com
+# Example: EXTERNAL_URL=http://your-server-ip:8080
+EXTERNAL_URL=http://localhost:8080