Lepton's apk-info-extractor ignores <activity-alias>, and Godot 4 exports put
LAUNCHER only on an alias (com.godot.game.GodotAppLauncher). Open Saber Plus
0.7.67 installed but Lepton exited with 'APP_ACTIVITY is empty'. Count only
real activities as launchable and patch the activity's VR intent filter.
Verified on the Frame: Open Saber Plus launches and renders.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>