Play pair sound before element check and add pair detection debug log

Sound was gated behind element check which may fail during swap
animation when card DOM elements are replaced by overlays.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

client/app.js

@@ -2592,6 +2592,7 @@ class GolfGame {
 
                 if (!wasPaired && nowPaired) {
                     // New pair formed!
+                    console.log('[PAIR] New pair detected for', newPlayer.name, 'col', top, bottom, 'isLocal:', newPlayer.id === this.playerId);
                     setTimeout(() => {
                         this.firePairCelebration(newPlayer.id, top, bottom);
                     }, window.TIMING?.celebration?.pairDelay || 50);
@@ -2607,10 +2608,10 @@ class GolfGame {
     }
 
     firePairCelebration(playerId, pos1, pos2) {
+        this.playSound('pair');
         const elements = this.getCardElements(playerId, pos1, pos2);
         if (elements.length < 2) return;
 
-        this.playSound('pair');
         if (window.cardAnimations) {
             window.cardAnimations.celebratePair(elements[0], elements[1]);
         }