Unify labels, byte units, snapshot numbers and spelling

internal/agents/audit.go

@@ -108,6 +108,6 @@ func (m *Manager) auditError(ctx context.Context, task api.Task, msg string) {
 func auditBrief(branch, commit string) string {
 	return fmt.Sprintf("Audit of %s at %s. This isn't a review of a change: check the whole codebase as it stands against the project's standards and expectations, and fix what falls short. "+
 		"byre runs this task in the background: the human doesn't see it until you ask a question, call ready_for_merge or hit an error. "+
-		"Finish your stage with finish_stage as usual, even when you found nothing. Once your stage has finished and its review has come back, byre asks whether the task is ready to merge;"+
+		"Finish your stage with finish_stage as usual, even when you found nothing. Once your stage has finished and its review has come back, byre asks whether the task is ready to merge; "+
 		"if nothing needed changing, answer with suggest_discard.", branch, commit)
 }