Claude keeps trying to use `gh api` to add severity labels, which gets
denied by the allowed tools restriction. Instead of retrying with the
permitted `gh pr edit --add-label` command, it silently gives up and
only posts the comment. The result is that severity comments appear on
PRs but the actual labels are never applied.
Add an explicit tool constraints section at the top of the prompt so
Claude knows upfront that only `gh pr view`, `gh pr edit`, and
`gh pr comment` are available.
Olaoluwa Osuntokun
7b93441814