chore: docs + third-party licenses

CHANGELOG.md

@@ -5,6 +5,11 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [0.5.0-beta] - 2025-08-21
+
+## Added
+- built-in shell interpreter
+
 ## [0.4.0-alpha] - 2026-08-21
 
 ## Added