Address code review comments

Author: Kate Osborn

internal/events/events_test.go

@@ -40,6 +40,6 @@ func TestEventLoop_SwapBatches(t *testing.T) {
 	}
 
 	if c := cap(eventLoop.nextBatch); c != 3 {
-		t.Errorf("EventLoop.swapBatches() mismatch. Expected capacity of 4 in the next batch, got %d", c)
+		t.Errorf("EventLoop.swapBatches() mismatch. Expected capacity of 3 in the next batch, got %d", c)
 	}
 }

internal/events/loop.go

@@ -30,7 +30,7 @@ type EventLoop struct {
 	// The EventLoop uses double buffering to handle event batch processing.
 	// The goroutine that handles the batch will always read from the currentBatch slice.
 	// While the current batch is being handled, new events are added to the nextBatch slice.
-	// The batches are swapped after the handler finishes with the current batch.
+	// The batches are swapped before starting the handler goroutine.
 	currentBatch EventBatch
 	nextBatch    EventBatch
 }