- settings/apply.py: the Apply pipeline (check, keep history, write, restart the watchdog, re-import
pages by the marker-only rule, recolour page keys), rollback when the watchdog does not come back,
the recording guard with the Emergency (LIVE) override, history entries and Go back / Undo.
- settings/server.py: the write routes behind the editing code (draft PUT/DELETE with 409 on a
conflict, validate, apply, restore, undo, watchdog restart/stop/start, commands to the watchdog,
the switcher file upload / pick newest / discard, gear notes).
- settings/ui/app.js: every screen grows inputs with Editing on; keys (checks, fixes, hold-always,
members), computers, fixes, site setup (schedules, Dante devices, Spotify, ATEM), Review & Apply
with live progress, History with Go back and Undo, Run this fix now.
- schema.unmask, push_page.push, nav_keys.colour; tests for all of it (163 pass).
- Verified live on NA Ingest: a page-only Apply, a restart Apply, Undo, history.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>