feat: wire LLM stats into GameScene admin panel

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

client/src/scenes/GameScene.ts

@@ -326,6 +326,21 @@ export class GameScene extends Phaser.Scene {
       this.adminPanel.updateConstants(data);
     };
 
+    // LLM stats callbacks
+    this.adminPanel.onRequestLlmStats = () => {
+      this.client.requestLlmStats();
+    };
+    this.adminPanel.onToggleLlmTracking = (enabled) => {
+      this.client.toggleLlmTracking(enabled);
+    };
+
+    this.client.onLlmStatsResult = (data) => {
+      this.adminPanel.updateLlmStats(data);
+    };
+    this.client.onLlmTrackingToggled = () => {
+      this.client.requestLlmStats();
+    };
+
     // Log socket callbacks
     this.client.onLogHistory = (data) => {
       this.logPanel.loadHistory(data);
@@ -338,6 +353,13 @@ export class GameScene extends Phaser.Scene {
     // Flush any history events that arrived before these handlers were registered
     this.client.flushBufferedHistory();
 
+    document.addEventListener('left-panel-opened', (e: Event) => {
+      const detail = (e as CustomEvent).detail;
+      if (detail?.tab === 'admin') {
+        this.adminPanel.requestStatsRefresh();
+      }
+    });
+
     document.addEventListener('narration-follow', ((e: CustomEvent) => {
       const { entityId } = e.detail;
       const npcIds = this.getNpcIds();