v2026.9.0

Added

• Added the Mobile device in use monitor for Android devices using the Home
  Assistant Companion App. Setup selects one device and automatically validates
  its required Interactive and Last update trigger entities.

Fixed

• Mobile-device monitors now correctly start a session when the selected
  Companion App Interactive entity reports on.
• Mobile screen-use sessions now stop or follow the configured unavailable-source
  behavior after the phone stops communicating, preventing a drained battery or
  lost connection from leaving an old interactive state active indefinitely.
• Mobile-device setup now validates the Companion App entity IDs visible on the
  selected device and shows the expected IDs when validation fails.