fix: disable transcript polling since we use real-time IPC events

Removed refetchInterval from useTranscript query since we get real-time
updates via IPC events from Recall.ai. Query still fetches once on mount
for historical segments but doesn't continuously poll the backend.

Author: lucasheriques

src/renderer/features/notetaker/hooks/useTranscript.ts

@@ -27,8 +27,8 @@ export function useTranscript(recordingId: string | null) {
       return transcript as TranscriptData;
     },
     enabled: !!client && !!recordingId,
-    refetchInterval: 5000, // Poll every 5s to get updates
-    staleTime: 2000,
+    refetchInterval: false, // Disabled: we get real-time updates via IPC events
+    staleTime: Infinity, // Never consider stale since we update via IPC
   });
 }