feat: v0.3.0b — add repo edit command, fix repo create --public flag

- Add `fgj repo edit` for changing visibility, description, homepage,
  and default branch on existing repositories
- Fix `repo create --public` flag which was defined but never read

CHANGELOG.md

@@ -5,6 +5,16 @@ 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).
 
+## [0.3.0b] - 2026-03-21
+
+### Added
+
+#### Repository Management
+- `fgj repo edit` - Edit repository settings (visibility, description, homepage, default branch)
+
+### Fixed
+- `fgj repo create --public` flag was defined but never read; now properly wired up
+
 ## [0.3.0a] - 2026-03-21
 
 ### Added
@@ -165,6 +175,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Cobra framework for CLI structure
 - Viper for configuration management
 
+[0.3.0b]: https://forgejo.zerova.net/sid/fgj-sid/releases/tag/v0.3.0b
 [0.3.0a]: https://forgejo.zerova.net/sid/fgj-sid/releases/tag/v0.3.0a
 [0.3.0]: https://codeberg.org/romaintb/fgj/releases/tag/v0.3.0
 [0.2.0]: https://codeberg.org/romaintb/fgj/releases/tag/v0.2.0