chore: update CHANGELOG for v0.1.0 [skip ci]

Author: github-actions[bot]

CHANGELOG.md

@@ -6,6 +6,12 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ---
+## [v0.1.0] - 2026-03-09
+
+## Initial Release
+
+First release of the GitHub Copilot CLI customization blueprint.
+
 
 ## [v0.1.0] - 2026-03-09