refactor(core): extract destroy confirmation response helper

internal/homesick/core/core.go

@@ -266,8 +266,12 @@ func (a *App) confirmDestroy(castle string) (bool, error) {
 		return false, err
 	}
 
-	response := strings.ToLower(strings.TrimSpace(line))
+	return isAffirmativeResponse(line), nil
-	return response == "y" || response == "yes", nil
+}
+
+func isAffirmativeResponse(input string) bool {
+	response := strings.ToLower(strings.TrimSpace(input))
+	return response == "y" || response == "yes"
 }
 
 func (a *App) Open(castle string) error {