Platform-agnostic CI pipelines: quality gate, Trivy scans, path filters, caching, releases. TRIGGER when: creating or editing any CI definition (`.github/workflows/`, `.gitlab-ci.yml`, `.gitlab/ci/`, …); setting up CI; user asks about triggers, path filters, CVE scanning, CI caching or release automation. SKIP when: no pipeline is involved. Load `github-actions-conventions` or `gitlab-ci-conventions` alongside.
