ci: imagem construída do código, esteira para os runners do Gitea e changelog

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

CHANGELOG.md

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+# 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).
+- 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