Step 2 of the control board MVP (MOSAIC-STACK-D-001): `serve` command starts
a loopback-only local server that serves one self-contained page and re-runs
the status scanner on each /api/board request. The page lists sessions
waiting on Jason first (errors on top), then one table per project with
plain-word states, ages, last messages, expandable detail rows, per-project
hide-offline, and a 10-second auto-refresh with pause.
Tests: control-board 33/33 (10 new: loopback rules, host refusal, all routes,
per-request rescan, 500 path, CLI refusals, live serve, page escaping guard);
registry 69/69 unchanged. Receipt:
docs/plans/reviews/2026-09-12_control-board-step2-review.md.
Co-Authored-By: Claude Fable 5.1 <[email protected]>
