fix(streaming): optimize quality, audio sync, and content update refresh

- Increased FFmpeg video quality to 8Mbps and audio to 192kbps.
- Added audio resync filters and better presets.
- Optimized HLS buffer settings for mobile players to reduce interruptions.
- Reduced API cache duration to 15m and added refresh support for faster content updates.

web/player_lite.html

@@ -243,10 +243,12 @@
             }
 
             const hls = new Hls({
-                maxBufferLength: 60,
-                maxMaxBufferLength: 120,
+                maxBufferLength: 30, // 30s is plenty for desktop stability
+                maxMaxBufferLength: 60,
                 enableWorker: true,
-                liveSyncDurationCount: 5
+                liveSyncDurationCount: 3,
+                liveMaxLatencyDurationCount: 10,
+                lowLatencyMode: true
             });
 
             window.hlsInstance = hls;
@@ -281,8 +283,9 @@
                 url: url
             }, {
                 enableWorker: true,
-                stashInitialSize: 1024 * 1024,
-                enableStashBuffer: true
+                stashInitialSize: 512 * 1024, // Smaller stash for faster start and better audio sync
+                enableStashBuffer: true,
+                lazyLoad: false
             });
 
             player.attachMediaElement(video);

web/player_mobile.html

@@ -229,12 +229,12 @@
             if (isHLS && Hls.isSupported()) {
                 log('Using Hls.js optimized for mobile');
                 const hls = new Hls({
-                    maxBufferLength: 90,
-                    maxMaxBufferLength: 180,
-                    liveSyncDurationCount: 6,
-                    liveMaxLatencyDurationCount: 12,
+                    maxBufferLength: 30,
+                    maxMaxBufferLength: 60,
+                    liveSyncDurationCount: 3,
+                    liveMaxLatencyDurationCount: 10,
                     enableWorker: true,
-                    lowLatencyMode: false
+                    lowLatencyMode: true
                 });
                 hls.loadSource(streamUrl);
                 hls.attachMedia(video);