fix: rename hls.min.js -> hls.js to match vite build output

The vite config outputs 'hls.js' but manifest.json and viewer.js
both referenced 'hls.min.js', causing chrome.runtime.getURL() to
return a 404 — triggering 'HLS player unavailable'.

- Update web_accessible_resources entry in manifest.json
- Update loadHlsJs() chrome.runtime.getURL reference
- Add debug log of manifest URL being loaded for diagnostics

src/viewer/viewer.js

@@ -709,6 +709,9 @@ function playHls(video, manifestUrl, panel) {
     origDestroy();
   };
 
+  // Log the manifest URL being loaded for debugging (helps diagnose playback failures).
+  console.log(`[goon-viewer] Loading HLS manifest:`, manifestUrl.substring(0, 200));
+
   hls.loadSource(manifestUrl);
   hls.attachMedia(video);
 }
@@ -726,7 +729,7 @@ function loadHlsJs() {
       return;
     }
     const script = document.createElement('script');
-    script.src = chrome.runtime.getURL('hls.min.js');
+    script.src = chrome.runtime.getURL('hls.js');
     script.onload = () => resolve();
     script.onerror = () => reject(new Error('Hls.js bundle unavailable - rebuild the extension.'));
     document.head.appendChild(script);