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/UpdateManager.java

@@ -172,6 +172,16 @@ public class UpdateManager {
     }
 
     private UpdateInfo parseRelease(String responseBody) throws JSONException, IOException {
+        if (responseBody == null || responseBody.trim().isEmpty()) {
+            throw new JSONException("La respuesta está vacía");
+        }
+        
+        // Validar que no sea HTML antes de parsear
+        String trimmed = responseBody.trim();
+        if (trimmed.startsWith("<!") || trimmed.startsWith("<html")) {
+            throw new JSONException("Se recibió HTML en lugar de JSON");
+        }
+        
         JSONObject releaseJson = new JSONObject(responseBody);
         String tagName = releaseJson.optString("tag_name", "");
         String versionName = deriveVersionName(tagName, releaseJson.optString("name"));
@@ -244,6 +254,11 @@ public class UpdateManager {
                 }
                 String json = response.body().string();
                 if (!TextUtils.isEmpty(json)) {
+                    // Validar que no sea HTML antes de parsear
+                    String trimmed = json.trim();
+                    if (trimmed.startsWith("<!") || trimmed.startsWith("<html")) {
+                        continue;
+                    }
                     return new JSONObject(json);
                 }
             }