Add debug logging and fix registerPlayer UI feedback

multiplayer.js

@@ -201,17 +201,21 @@ class MultiplayerClient {
             modal.classList.remove('active');
         }
 
-        // Show loading state if connecting
+        // Show loading state
         const loading = document.querySelector('.loading');
-        if (loading && !this.socket) {
-             loading.textContent = 'Connecting to server...';
+        if (loading) {
+            loading.textContent = 'Registering...';
         }
 
         if (!this.socket || !this.socket.connected) {
             console.log('Socket not ready yet, username saved and will be sent on connect.');
+            if (loading) {
+                loading.textContent = 'Connecting to server...';
+            }
             return;
         }
         
+        console.log('Emitting register_player for:', username);
         this.socket.emit('register_player', { username });
     }
     

server.js

@@ -36,7 +36,9 @@ io.on('connection', (socket) => {
     
     // Player registration
     socket.on('register_player', async (data) => {
+        console.log('📝 Registration request from', socket.id, 'username:', data.username);
         const result = await gameManager.registerPlayer(socket, data.username);
+        console.log('📝 Registration result:', result);
         socket.emit('registration_result', result);
     });