Fix: Crash on HTML response in EventRepository and others

- Fixed: Value <! DOCTYPE cannot be converted to JSONArray in EventRepository
- Fixed: Added HTML validation in UpdateManager and DeviceRegistry
- Fixed: Improved HTTP error handling in StreamUrlResolver
- Improved: Error messages in PlayerActivity
- Bumped version to 9.4.3

app/src/main/java/com/streamplayer/PlayerActivity.java

@@ -22,6 +22,7 @@ import com.google.android.exoplayer2.source.hls.HlsMediaSource;
 import com.google.android.exoplayer2.ui.PlayerView;
 import com.google.android.exoplayer2.util.Util;
 
+import java.io.IOException;
 import java.net.InetAddress;
 import java.net.UnknownHostException;
 import java.util.HashMap;
@@ -100,8 +101,10 @@ public class PlayerActivity extends AppCompatActivity {
             try {
                 String resolvedUrl = StreamUrlResolver.resolve(channelUrl);
                 runOnUiThread(() -> startPlayback(resolvedUrl));
+            } catch (IOException e) {
+                runOnUiThread(() -> showError("No se pudo conectar con el canal: " + e.getMessage()));
             } catch (Exception e) {
-                runOnUiThread(() -> showError("Error al obtener stream: " + e.getMessage()));
+                runOnUiThread(() -> showError("Error inesperado: " + e.getMessage()));
             }
         }).start();
     }