log how many background tasks an attach recovered

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

src/servers/api/chat/websocket.ts

@@ -713,7 +713,12 @@ async function handleAttach(ws: ServerWebSocket<WSData>, msg: { claudeSessionId:
     streamingText: session.streamBuffer,
   });
 
-  logger.info('Attached socket to live session by transcript id', { sessionId, claudeSessionId, isGenerating });
+  logger.info('Attached socket to live session by transcript id', {
+    sessionId,
+    claudeSessionId,
+    isGenerating,
+    recoveredTasks: runningTasks.length,
+  });
 }
 
 /**