Description links to YouTube videos, channels, playlists, and external
video URLs now open in Yattee instead of Safari. When a video is
already playing, tapping a video link surfaces the existing
QueueActionSheet (Play Now / Play Next / Add to Queue) — the sheet is
hosted both at the app root and inside ExpandedPlayerSheet so it
appears above whichever layer is on screen.
Delete the multi-page onboarding sheet. On first launch the app now
silently imports any v1 instances from UserDefaults (splitting embedded
basic-auth credentials out of the URL and into the Keychain) and then,
if the device is signed in to iCloud, shows a single alert offering to
enable sync. Accepting shows a blocking progress overlay until the
initial upload completes.
