# Changelog

Everything notable in PSS is recorded here. The format follows
[Keep a Changelog](https://keepachangelog.com/en/1.1.0/) and the project follows
[Semantic Versioning](https://semver.org/).

## [Unreleased]

## [1.3.3] - 2026-11-01

### Changed

- The code, the container image and the releases now live on Gitea
  (`git.lucasrguerra.dev.br`). The deployment pulls the image from its registry.
- The `Dockerfile` is multi-stage: it builds Vite from source inside the image instead
  of unpacking a `dist.tar.gz` committed to the repository (removed, along with the
  `build:release` script). The final stage is `nginx-unprivileged`: the container runs
  as the `nginx` user and listens on port 8080 instead of 80 (Trivy DS-0002).
- New CI on Gitea runners (`.gitea/workflows`): types, 282 tests, Trivy on the repository
  and on the image, and an image smoke test. The image is built once per content hash and
  reused by the release, so a merge or a tag on an already validated commit rebuilds nothing.
- Repository links in `package.json`, `CITATION.cff`, the READMEs and `CONTRIBUTING.md`
  point to Gitea. `.gitattributes` forces LF line endings.

### Fixed

- `docker-compose.yml` healthcheck uses `CMD-SHELL` and the correct local URL, and the
  port mapping honours `PORT`.

## [1.3.2] - 2026-03-25

### Added

- Regression tests for Round Robin scheduling with threads.

## [1.3.1] - 2026-03-25

### Added

- `ThreadMetricsChart` and per-thread metrics.

### Changed

- Improvements to the Gantt chart and the metrics panel.

## [1.3.0] - 2026-03-24

### Added

- Multilevel Feedback Queue (MLFQ) scheduling algorithm.
- Thread scheduler.

## [1.2.0] - 2026-03-23

### Added

- English documentation, a `CONTRIBUTING.md`, the JOSS paper and a Zenodo DOI in
  `CITATION.cff`.
- Multilevel Queue (MLQ) scheduling algorithm and its documentation.

### Changed

- License switched to MIT.
- Scheduling algorithms refactored into a class-based `BaseAlgorithm` structure, with
  the engine and tests updated and new algorithm and metrics documentation.

## [1.0.0] - 2026-03-23

### Added

- First release of the browser-based CPU scheduling simulator: core scheduling engine,
  algorithms (including Priority Round Robin), Gantt chart with context-switch handling,
  UI components and Docker setup.

[Unreleased]: https://git.lucasrguerra.dev.br/lucasrguerra/pss/compare/v1.3.3...HEAD
[1.3.3]: https://git.lucasrguerra.dev.br/lucasrguerra/pss/compare/v1.3.2...v1.3.3
[1.3.2]: https://git.lucasrguerra.dev.br/lucasrguerra/pss/compare/v1.2.0...v1.3.2
[1.2.0]: https://git.lucasrguerra.dev.br/lucasrguerra/pss/compare/v1.0.0...v1.2.0
[1.0.0]: https://git.lucasrguerra.dev.br/lucasrguerra/pss/releases/tag/v1.0.0