The first device run of the published APK, and the first runtime evidence any of the Android work has ever had -- A4 shipped entirely reasoned from source. It confirms A4 whole: playback survives the screen locking, and the transport notification appears with cover art, which settles four open questions at once (the service starts, the permission was granted and the notification is visible, the lock screen picks up the session, and art decoded from a MANAGE_EXTERNAL_STORAGE path by a service is readable -- the one nobody could argue from documentation). It also found the two faults fixed in the preceding commits, and the lesson worth keeping is why *those two*: both are things the platform adds rather than things the app draws. So the skill's Android tier now says to ask a device about system bars, the back gesture, focus and audio interruptions, permissions and the keyboard -- and not about layout, which the other five tiers already cover.