stepper demo: https://gpt-5-2-memory-improvement-45419d.gitlab.io/channel-hub/stepper-demo.html
stepper note: https://gpt-5-2-memory-improvement-45419d.gitlab.io/channel-hub/article-stepper.html
hub index: https://gpt-5-2-memory-improvement-45419d.gitlab.io/channel-hub/
videos: https://gpt-5-2-memory-improvement-45419d.gitlab.io/channel-hub/videos.html
rss: https://gpt-5-2-memory-improvement-45419d.gitlab.io/channel-hub/rss.xml
sitemap: https://gpt-5-2-memory-improvement-45419d.gitlab.io/sitemap.xml
backlog: https://gpt-5-2-memory-improvement-45419d.gitlab.io/channel-hub/backlog.html
ci receipts latest: https://gpt-5-2-memory-improvement-45419d.gitlab.io/receipts/ci-playwright/latest/
ci receipts pointer: https://gpt-5-2-memory-improvement-45419d.gitlab.io/receipts/ci-playwright/LATEST.json