Add new assertion function with comprehensive tests following TDD
Fetch GitHub issue, create branch, plan and implement with TDD, then open PR
Run comprehensive pre-release validation checklist
Review a GitHub pull request; defaults to the current branch's PR when no number is given
Run complete TDD red-green-refactor cycle for a test
Push branch and create a GitHub PR with concise, issue-linked description
Run pre-release validation and execute the release process
Walk over all open GitHub issues that are unassigned or assigned to the current user, and process each one via the /gh-issue skill, sequentially.