MiniABS 1.6: never mark early endings as played, stall warning, Close

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/com/miniabs/Api.java

@@ -26,7 +26,7 @@ import android.os.Build;
 
 /** Audiobookshelf REST client (API as of server 2.x, including the 2.26+ token system). */
 final class Api {
-    static final String VERSION = "1.5";
+    static final String VERSION = "1.6";
 
     static class ApiException extends IOException {
         final int code;