Configure the release variant's output filename (via the legacy applicationVariants API) so the unsigned release APK is stamped with its versionCode — e.g. space.rcmd.android.sizzle_4.apk — to simplify uploading to the private F-Droid repo. Staging keeps its app-staging.apk name. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>