Consolidate Claude + Cursor DONE state and the next execution track
(smoke → Docker msn.iykyka.com → stabilize → FCM/Android QA → human PoC).
Sync stale PLANNING Q1–Q7/stack status and point AGENTS/README/CLAUDE/roadmap
at docs/deploy-checklist.md.
Co-authored-by: okuma <o0kuma@users.noreply.github.com>