Changelog for tui-launcher-0.0.1

Changelog

Initial public release of tui-launcher.
Brick-based terminal launcher with keyboard and mouse navigation.
TOML configuration with per-entry working-dir, shell-program, shell-login, and color.
Auto-created default config at ~/.config/tui-launcher/config.toml.
End-to-end TuiSpec test coverage for explicit config loading, arrow-key navigation, and shell launching.
Screenshot generation with dark and light terminal renders for the README.