Loop video promos: native loop attr + ended handler fallback

public/app.js

@@ -206,10 +206,20 @@ async function playChannel(key) {
       // Safari / native HLS
       video.src = hlsUrl;
     }
+    // Belt-and-suspenders loop: native `loop` attribute + explicit handler
+    // (Shaka sometimes pauses on `ended` instead of looping the manifest)
+    video.loop = true;
+    video.addEventListener('ended', () => {
+      try {
+        video.currentTime = 0;
+        video.play().catch(() => {});
+      } catch (_) {}
+    });
     video.play().catch(() => { /* autoplay may be blocked, user can press play */ });
   } catch (e) {
     console.warn('HLS load failed, falling back to native src:', e?.message);
     video.src = hlsUrl;
+    video.loop = true;
     video.play().catch(() => {});
   }