Centralise the full GitHub Actions workflow catalog in
docs/contributing/tools/actions.md as the single source of truth, link
pipeline.md and workflow.md to it, and introduce
docs/agents/action/push-trigger-pull.md as the authoritative procedure
for the push to draft CI to ready-for-review loop. Retire the stale
flat docs/contributing/tools/agents/claude.md and drop docs README
page-inventories that violate the readme_md.md scope rule.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>