@php
/**
* A slideshow on a wall: the rotation shell a paired TV loads when its screen row is a
* playlist (TvScreen::playlist). Two double-buffered layers hold whole board documents
* (?step=N renders of the same device URL) and tv-player.js swaps them with the show's
* saved transition — the exact engine the admin template slideshow runs, minus the
* workbench controls. The vendor's own preview (/vendor/screens/{id}/play) renders this
* same view with /tv/preview step URLs and no device sync.
*
* @var string $title
* @var array $steps [['name' => …, 'url' => …], …] in play order
* @var string $transition one of TvScreen::PLAYLIST_TRANSITIONS
* @var int $seconds dwell per board
* @var string|null $liveDevice paired device token (self-heal poll) — null in previews
* @var string|null $liveVersion content fingerprint the poll compares against
*/
$liveDevice = $liveDevice ?? null;
$liveVersion = $liveVersion ?? null;
$payload = json_encode(
array_map(static fn (array $b): array => ['name' => (string) $b['name'], 'url' => (string) $b['url']], $steps),
JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE
);
@endphp
{{ $title }}
@if ($liveDevice)
@php // The same self-heal the single-board wall runs: reload when content
// changes (any member board, the show itself, or the menu), and return
// to the connect screen if the vendor unpairs this TV.; @endphp
@endif