gh-action-readme

Run test coverage check and report per-package breakdown highlighting packages below the 72% gate and 80% new-code target

Scaffold a new YAML test fixture and register its path constant in testutil/test_constants.go

Run gremlins mutation testing on a specified Go package, following the same pattern as make test-mutation

Scaffold a new documentation theme following the project's theme registration pattern from CLAUDE.md

Run all project security scans (make security) and summarize findings by tool and severity