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+# Contributing
+
+## Commit conventions
+
+This project uses Conventional Commits. Every commit must have a scope:
+
+```text
+type(scope): imperative summary
+```
+
+The project currently uses these commit types:
+
+- `feat`: adds user-visible functionality
+- `fix`: corrects an incorrect or unsafe behavior
+- `refactor`: changes internal structure without changing intended behavior
+- `docs`: changes documentation only
+- `meta`: changes project conventions, repository metadata, or contribution files
+- `build`: changes installation, packaging, or deployment integration
+
+The project currently uses these scopes:
+
+- `apt`: APT and Debian package-manager behavior
+- `hook`: APT hook configuration and invocation wiring
+- `zfs`: ZFS selection, snapshot naming, and retention behavior
+- `conf`: Runtime configuration parameters and defaults
+- `docs`: README and explanatory documentation
+
+Add a new type or scope to this document before using it. Keep commit subjects
+concise and imperative. Commit bodies should explain the motivation and the
+resulting behavior, with body lines no longer than 72 characters.