Watches a user's YouTube/Vimeo subscriptions and summarizes new videos (highlights + takeaways) via local-first AI with optional BYO-AI fallback. Standalone-first; brain is one optional sink. Go.
ARCHIVED 2026-09-06: source consumed by mathias/cad (cmd/cad-atlas + internal/atlas), history preserved via subtree; image builds from cad. Issues migrated.