Capture the deferred CI options from the speed pass (708d4c2) so they aren't lost:
node_modules cache to skip npm ci, smaller CI runner image (act_runner label→image,
needs admin; or repo-only container: for node-only jobs), path-filtered jobs, a fast
split lint job, and an optional lean prod backend image. Notes the constraints (CI not
observable from the agent env; compose images aren't used by CI). Added the README row.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
