Prepare for next release.

Author: terabytesoftw

CHANGELOG.md

@@ -5,6 +5,8 @@ All notable changes to this project will be documented in this file.
 The format is based on [Conventional Commits](https://www.conventionalcommits.org/en/v1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## 0.4.2 Under development
+
 ## 0.4.1 September 26, 2026
 
 - feat(panel-view): add `hero()` for `HeroBlock`, the header naming the subject a panel describes with its status badge and metric row; update `README.md`.