chore(release): version 0.5.0

Author: apiad

CHANGELOG.md

@@ -5,6 +5,15 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [0.5.0] - 2026-02-28
+
+### Added
+- New `/issues` command to manage project issues with GitHub CLI, supporting summaries, creation/updates, and work modes.
+
+### Changed
+- Updated `README.md` and `welcome.py` hook to include information about the `/issues` command.
+- Internal documentation updates in `TASKS.md` and `journal/`.
+
 ## [0.4.0] - 2026-02-28
 
 ### Changed