Contributing standards

The family contribution standard — branch model, commit convention, pull-request format, releases — read once, and then each repository's own conventions.

Scope

The standard applies to all five tool repositories. The per-repository conventions below are page-classification's and the translator's.

A template, filled in per repository

The hub keeps the standard as a template, docs/templates/CONTRIBUTING.md, with «placeholders» for each repository to fill. Unlike the shared code, it is not vendored: each repository's CONTRIBUTING.md is its own file, adapted to its code, and is the authority for that repository.

The family standard

Branches

Branch	Environment	Rule
test	Staging	The base for all development. Always branch from test, and open pull requests against it
default	Stable / integration	Merged only by a human reviewer. No pull requests directly into it

The stable branch is the repository's default branch — master in the translator, vit in page-classification, whose branch names follow its model families.

Branch names follow three patterns:

Type	Pattern
New feature	feature-<name>
Bug fix	bugfix-<name>
Hotfix on the stable branch	hotfix-<name>

The workflow

1. Open an issue, or find the existing one.
2. Branch from test: git checkout test && git pull origin test, then git checkout -b feature-<name>.
3. Implement, following the repository's code conventions.
4. Run the fast checks before every commit.
5. Open a pull request against test — as a Draft while work is in progress.

What a pull request contains

• Issue link — Closes #<n> or Refs #<n>
• Motivation — why the change is needed
• Description of change — what changed and how
• Testing — what was run, what passed, and what could not be run, and why

Issues reference the commits that resolved them, not the other way round: a commit message says what changed; the issue records why.

Commit messages

[type] concise description of what changed, with one of ten types:

Type	When
add	added content
edit	edited existing content
remove	removed existing content
fix	a bug fix
refactor	restructuring with no change in behaviour
test	adding or updating tests
docs	documentation only
chore	build, dependencies, CI configuration
style	formatting, no logic change
perf	a performance improvement

Releases

There is no release branch. A release is a v* tag, and three version strings must agree before it can publish: the tag, CITATION.cff's version, and para_config.txt's [tool] version. The hub's check_version.py — vendored into every tool — enforces it in each repository's release workflow, and security.reusable.yml checks it again. Cutting a release:

1. Bump version and date-released in CITATION.cff, and [tool] version in para_config.txt, to the same value.
2. Add the release to the Release History table in CONTRIBUTING.md.
3. Merge through test into the default branch.
4. Tag the merge commit v<version> and push the tag.
5. CI checks the three versions, builds the images, runs the release gate and — only if it passes — publishes <version> and latest. See Operations.

Shared code

The seventeen files listed in Architecture are never edited in a tool repository: CI fails on a single changed byte. A change to shared code is made in the hub and copied out with scripts/revendor_shared.sh, and the tool repositories' copies land together. Everything else in a tool repository is its own.

Which document owns what

README.md is for visitors — overview, workflow, quick start; CONTRIBUTING.md is for developers — conventions, branches, pull requests, testing, the release history. A rule lives in one of them, and the other links to it.

Per-repository conventions

page-classificationtranslator

Topic	This repository
Branch-name examples	feature-new-model, bugfix-truncated-image, hotfix-flags-priority
Minimum checks before a commit	python -m compileall -q . then ruff check .
Test requirements	pip install -r setup/requirements-test.txt
Fast / full / coverage	pytest -m "not slow" --tb=short · pytest --tb=short · pytest -m "not slow" --cov=. --cov-report=term-missing
Lint configuration	ruff.toml: line length 120, py311, rules E, F, W, I, E501 ignored
Pre-commit hooks	whitespace and YAML checks, ruff (--fix + format), shellcheck for the data scripts
Config file	setup/para_config.txt — not at the root

Topic	This repository
Branch-name examples	feature-amcr-validation, bugfix-chunk-truncation, hotfix-api-timeout
Minimum checks before a commit	python -m compileall -q . then pre-commit run --all-files
Test requirements	pip install -r requirements-test.txt
Fast / full / coverage	the same three commands
Lint configuration	ruff.toml: line length 120, py311, rules E, F, W, I, E501 ignored
Pre-commit hooks	whitespace and YAML checks, ruff (--fix + format)
Config file	para_config.txt at the root

What CI runs on a pull request

Every pull request against test runs the repository's caller workflows — the fast test lane and a container smoke test (docker.yml), the service contract (api-contract.yml), byte parity of the shared files (para-drift.yml), pre-commit, workflow lint, CodeQL and the version check. Architecture → The CI federation lists them. A pull request is ready for review when all of them are green.

Contributing to this site

The site is built from docs_site/ in the hub with MkDocs Material. A page:

• starts with front matter — title, nav_order, status, issue, and repo / role on a tool page — and is listed in mkdocs.yml's nav;
• is written, not generated: it explains and connects, and leaves the full-length manual to the tool's own README.md;
• states lasting facts — what a tool is, how it works, how to use it — and keeps time-bound findings out of the page;
• ends with a `## Sources

This table records provenance: what this page was written from, not a build instruction.

Source	What was taken from it
atrium-project/docs/templates/CONTRIBUTING.md	the family standard
atrium-page-classification/CONTRIBUTING.md @ vit adee922	its conventions and release history
atrium-translator/CONTRIBUTING.md @ master 71feaef	the same
each repository's ruff.toml and .pre-commit-config.yaml	the lint and hook tables
atrium-project/mkdocs.yml, tools/docs/requirements.txt	the site conventions and build

Contact details are deliberately not reproduced here; each repository's own Contacts & Acknowledgements section is the place to find them.