feat: implement core server with API routing, static file serving, Xtream proxy, FFmpeg streaming, and security middleware.

bin/server.dart

@@ -463,6 +463,7 @@ Handler _createStreamHandler() {
         
         // Output format: MPEG-TS for streaming (compatible with mpegts.js)
         '-f', 'mpegts',
+      ];
 
       // Video: Transcode based on quality
       // High = Copy (efficient), Low/Medium = Transcode to H.264 (compatible)
@@ -500,6 +501,7 @@ Handler _createStreamHandler() {
       
       // Audio: Transcode to AAC is SAFEST for browsers
       // (Many IPTV streams typically use MP2/AC3 which browsers hate)
+      ffmpegArgs.addAll([
         '-c:a', 'aac',
         '-b:a', '128k',
         '-ar', '44100',
@@ -510,7 +512,7 @@ Handler _createStreamHandler() {
         
         // Output to stdout pipe
         'pipe:1'
-      ];
+      ]);
 
       // Start the process
       final process = await Process.start('ffmpeg', ffmpegArgs);