Server: migration 41 drops the pre-widget-system Frame columns
(mode/album_id/current_asset_id/queue/calendar_*/whiteboard_*, etc)
docs/widgets.md flagged as the deliberately-deferred Phase 6 cleanup,
with a raw-SQL backfill safety net for any frame that still somehow
lacks a Widget. Also drops legacy_token_enabled and the shared
MANAGEMENT_TOKEN fallback it gated in require_device/require_browser --
the per-frame manage_token/device_token flow (and the /m/ page) fully
supersede it now; MANAGEMENT_TOKEN's only remaining role is the
optional pre-setup claim gate. Confirmed with the maintainer that the
deployed frame is already off the shared token before removing the
server-side fallback.
Firmware: the captive portal's "Access Token" field and its NVS/
build_url plumbing only ever mattered for pointing new firmware at an
old pre-multi-frame server -- gone along with the server-side fallback
it fed. Version bump to publish the change.
The server now records exactly what was last sent to the device on
every device-facing render (/frame/image, /frame/advance, /frame/back,
and the global hold actions), persisted as Frame.last_displayed_image/
_at and served back via GET /api/frames/{id}/now-displaying. The
header thumbnail is split into that frozen "now displaying" snapshot
and the existing live "up next" re-render, with an arrow between them
-- so editing a layout shows the change immediately on the right while
the left stays exactly what's actually on the panel until the device's
next real wake.