fix(viewer): fallback to src as HLS manifest when hlsManifest is missing

When mediaType=hls but hlsManifest field is absent (e.g. lost during
storage serialization), fall back to src if it looks like a manifest URL
(.m3u8 with http scheme). This prevents the video from silently failing
to play on Chrome where there is no native HLS support.

src/viewer/viewer.js

@@ -642,18 +642,27 @@ function createPanel(entry, tag) {
 
   if (poster) video.poster = poster;
 
-  if (mediaType === 'hls' && hlsManifest) {
-    video.dataset.hlsManifest = hlsManifest;
-    video.dataset.mediaType = 'hls';
-    console.log('[goon-viewer] HLS detected, manifest:', hlsManifest);
-    panel.appendChild(video);
-    if (tag) {
-      const label = document.createElement('div');
-      label.className = 'panel-label';
-      label.textContent = tag;
-      panel.appendChild(label);
+  if (mediaType === 'hls') {
+    // Use explicit hlsManifest field, or fall back to src if it looks like a manifest URL.
+    // This handles the case where hlsManifest was lost in storage serialization but src
+    // still points to the .m3u8 playlist.
+    const manifestUrl = hlsManifest || (src.includes('.m3u8') && src.startsWith('http') ? src : null);
+    if (manifestUrl) {
+      video.dataset.hlsManifest = manifestUrl;
+      video.dataset.mediaType = 'hls';
+      console.log('[goon-viewer] HLS detected, manifest:', manifestUrl);
+      panel.appendChild(video);
+      if (tag) {
+        const label = document.createElement('div');
+        label.className = 'panel-label';
+        label.textContent = tag;
+        panel.appendChild(label);
+      }
+      return { panel, hlsEntry: { video, manifest: manifestUrl, panel } };
     }
-    return { panel, hlsEntry: { video, manifest: hlsManifest, panel } };
+    // mediaType says HLS but we have no manifest URL — fall through to native playback.
+    // On Safari this may still work for .m3u8; on Chrome it will fail.
+    console.warn('[goon-viewer] HLS entry missing manifest URL, src:', src);
   }
 
   video.src = src;