Gitea treats a `WIP:` title prefix as a draft marker and refuses to merge
while it's present. Verified empirically against this instance by
temporarily retitling PR #123: the API flipped `draft` to true and
`mergeable` to false, and both reverted when the prefix was removed.
The distinction from the verification merge gate is the point, so it's
stated explicitly in both files: `WIP:` means more code changes are
coming, NOT "finished but unverified". A complete branch with unticked
`## Verification` boxes is an ordinary PR — that case is already covered
by the merge gate and does not want the prefix. The two signals are
independent and can occur in any combination.
Documented as a merge rule under Branching & Pull Requests, next to the
verification gate, and in the template's title guidance where an author
picking a title will actually encounter it.