Update app.js

app.js

@@ -1,8 +1,9 @@
 // --- CONFIGURATION ---
-// Set this to your Railway URL (e.g., "https://your-app.up.railway.app")
-// Leave as empty string "" if the frontend and backend are on the same server.
-const BACKEND_URL = "https://your-railway-app.up.railway.app";
+// Set this to your Railway URL
+let BACKEND_URL = "https://prod-infinit-memory-production.up.railway.app";
 
+// Safety: Remove trailing slash if the user adds one
+if (BACKEND_URL.endsWith('/')) BACKEND_URL = BACKEND_URL.slice(0, -1);
 
 const chatContainer = document.getElementById('chat-container');
 const userInput = document.getElementById('user-input');
@@ -132,4 +133,4 @@ userInput.addEventListener('keydown', (e) => {
 userInput.addEventListener('input', function () {
     this.style.height = 'auto';
     this.style.height = (this.scrollHeight) + 'px';
-});
+});