Source Code added

app/proguard-rules.pro

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+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# Keep names of all Jellyfin classes
+-keepnames class org.jellyfin.mobile.**.* { *; }
+-keepnames interface org.jellyfin.mobile.**.* { *; }
+
+# Keep WebView JS interfaces
+-keepclassmembers class org.jellyfin.mobile.bridge.* {
+    @android.webkit.JavascriptInterface public *;
+}
+
+# Keep Chromecast methods
+-keepclassmembers class org.jellyfin.mobile.player.cast.Chromecast {
+    public *;
+}
+
+# Keep file names/line numbers
+-keepattributes SourceFile,LineNumberTable
+
+# Keep custom exceptions
+-keep public class * extends java.lang.Exception
+
+# Keep AndroidX ComponentFactory
+-keep class androidx.core.app.CoreComponentFactory { *; }
+
+# Assume SDK >= 21 to remove unnecessary compat code
+-assumevalues class android.os.Build$VERSION {
+  int SDK_INT return 21..2147483647;
+}