Timers 1.6.0: the ProPresenter video countdown, with looping videos hidden

Time left on the video ProPresenter is playing — the one number a booth
needs during a bumper or sermon video — was missing: the module only read
the configured timers, and the video countdown lives in the transport
routes. Verified live on ProPresenter 21.4:
  GET /v1/transport/presentation/current → { is_playing, uuid, name,
    artist, audio_only, duration }
  GET /v1/transport/presentation/time    → bare seconds as a sub-second
    float — better than /v1/timer/video_countdown's whole-second string,
    so no quantization phase lock is needed, only an anchor hold (a frame
    is broadcast only when the anchor drifts, not per poll).

The Video card rides the ProPresenter source: transport current on the
slow lane, position on the hot path (skipped while no media is loaded),
running/paused/idle from is_playing and position, the media name (minus
its file extension) as the detail line. It persists as an idle '—'
between videos — a wall tile must not appear and vanish with the media —
and is absent only on a ProPresenter whose transport routes 404.

No looping flag exists anywhere in the API, so looping is inferred: the
same media's position jumping backwards is a wrap, and the flag sticks
until the media changes. Each tile gets a 'Looping videos' switch
(default off): off, a looping background's meaningless time is hidden —
the card sits out of a multi-card tile, and a solo Video tile shows a
quiet 'Looping' card instead of sitting empty. Shown loops never take
the warn/overrun tones: a 15 s background flashing red every wrap would
cry wolf all service.

The picker offers 'Video' as its own tile (solo gear carries the loop
switch); pp-timers-mock gains the transport routes with a 4-minute cycle
(bumper playing → paused → resumed → nothing → looping background).
Verified in the browser across the whole cycle, both tile kinds, and the
per-tile toggle. Selftests pass.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

modules/propresenter-timers/client.js

@@ -70,6 +70,7 @@ const DEFAULTS = {
   showDetail: true,
   showSeconds: true,
   leadingZeros: false,
+  showLoops: false,
   clock24h: true,
   clockSeconds: true,
   clockDate: false,
@@ -384,7 +385,12 @@ export default function create({ root, moduleApi }) {
       for (const source of state.sources) {
         for (const timer of source.timers) {
           if (keyOf(source, timer) !== solo) continue;
-          return [{ id: source.id, source, items: [{ key: solo, source, timer }] }];
+          // A solo video tile with looping media hidden must not sit empty:
+          // it shows a quiet card instead of a countdown nobody should read.
+          const shown = timer.looping && pref('showLoops') !== true
+            ? { ...timer, state: 'idle', remainingMs: null, elapsedMs: null, startedAt: null, asOf: null, status: { text: 'Looping', tone: 'muted' } }
+            : timer;
+          return [{ id: source.id, source, items: [{ key: solo, source, timer: shown }] }];
         }
       }
       // The timer this tile was added for is not offered right now. Nothing is
@@ -398,7 +404,11 @@ export default function create({ root, moduleApi }) {
       const items = [];
       for (const timer of source.timers) {
         const key = keyOf(source, timer);
-        if (!hidden.has(key)) items.push({ key, source, timer });
+        if (hidden.has(key)) continue;
+        // A looping background's time means nothing — the card sits out
+        // while a loop plays (per tile: the "Looping videos" switch).
+        if (timer.looping && pref('showLoops') !== true) continue;
+        items.push({ key, source, timer });
       }
       // Every timer of a live source hidden on purpose: nothing to say.
       if (!items.length && source.timers.length) continue;
@@ -666,7 +676,9 @@ export default function create({ root, moduleApi }) {
           card.mono = null;
         }
         text = value === null ? '—' : fmtDuration(value, { ...digits, up: timer.kind === 'countdown' });
-        tone = toneFor(timer, value);
+        // A shown loop never warns or overruns — it wraps at zero by design,
+        // and a background flashing red every pass would cry wolf all service.
+        tone = timer.looping ? (timer.state === 'running' ? 'ok' : 'muted') : toneFor(timer, value);
         statusText = timer.status?.text || defaultStatus(timer, value, tone);
         statusTone = timer.status?.tone || tone;
         detailText = timer.detail || '';