Add commonly-used imperative verbs missing from the imperative list #493

The subject_imperative check accepts a commit subject when its first word is in the IMPERATIVES list. A few common, valid imperative verbs are missing, so they're incorrectly reported as non-imperative — for example: revamp, comment, vendor, backport, embed, polyfill.

Where

commit_check/imperatives.py

What to change

• Add the missing verbs, keeping the list consistent with the existing style/ordering.
• Add a test asserting subjects like docs: revamp the profile and chore: comment out entry pass the imperative check.

Acceptance criteria

• The listed verbs no longer fail subject_imperative.
• The full test suite passes.

Note

This is an incremental fix. The underlying limitation (an allow-list can never cover every valid imperative verb) is a separate, larger topic — please keep this PR scoped to adding verbs plus a test.