How fix instructions preserved normal synchronization

Simplified Fix Instruction

AI Agent implemented fix w/ Fix Instruction

sync/queue.goAnonymized illustrative patch

42func sendPendingUpdates(ctx context.Context, peer Peer, cursor Cursor) error {43    queue := peer.OutboundQueue()44    queueSize := queue.Size()45    queueCapacity := queue.Capacity()4647+    if queueSize >= queueCapacity {48+        return retryScheduler.Defer(peer.ID(), retryDelay)49+    }5051    update, err := loadNextPendingUpdate(ctx, cursor)52    if err != nil {53        return fmt.Errorf("load pending update: %w", err)54    }5556    return queue.Enqueue(ctx, update)57}