fix: wire opponent panel tap to profile popup in live mode

showOpponentPopup existed but was never called. Now tapping an
opponent's panel in live mode opens their profile with add-friend option.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

public/js/modules/ludo/scenes/game.js

@@ -231,7 +231,7 @@ export function mountGame(el, params) {
       audio.play('sfx_emote', 'ui');
     });
 
-    // Fetch opponent profiles and update player panels (name + avatar)
+    // Fetch opponent profiles and update player panels (name + avatar + tap for profile)
     if (params.players) {
       params.players.forEach((pId, i) => {
         if (i === myPlayerIndex || pId.startsWith('bot')) return;
@@ -247,6 +247,8 @@ export function mountGame(el, params) {
               if (avatarEl && profile.avatar_url) {
                 avatarEl.innerHTML = `<img src="${profile.avatar_url}" style="width:100%;height:100%;object-fit:cover;border-radius:50%;">`;
               }
+              panel.style.cursor = 'pointer';
+              panel.addEventListener('click', () => showOpponentPopup(el, profile));
             }
           }
         });