First stable public release of Ptylon.
Ptylon is a production-tested, self-hosted browser terminal workspace with persistent node-pty sessions, a restartable authenticated WebSocket gateway, browser tools, workspaces, files, themes, systemd installation, and Docker Compose deployment.
Verification: clean install, typecheck, lint, production build, PTY gateway survival, browser regression, dependency audit, and end-to-end Docker Compose smoke in GitHub Actions.