The repo guide already prescribed the seven-rules format but did
not rule out the Conventional-Commits alternative, and recent
history has drifted into mixing both styles. Several existing
commits use a "fix(scope): ..." prefix that the project does not
consume for any tooling (no changelog generator, no semantic
release, no commit-lint), so the prefix only adds noise and hurts
log readability.
Add an alwaysApply Cursor rule that explicitly bans Conventional
Commits and restates the seven-rules format with concrete good and
bad examples. Update contrib/claude/commit.md with the same
prohibition so the documentation and the rule agree, and
cross-link both from the existing signing rule so an agent reading
git-commit-signing.mdc lands on the style rule too.
Signed-off-by: Émile Ré <emile@probo.com>
