v1.7.6

• Updating from v1.7.5 transfers the background service without a restart when the running v1.7.5 service is
  verified; otherwise one normal restart completes the update, and the app now records which check held the transfer.
• The background service can also be transferred while the Thor is in TOP mode with the lower screen confirmed off, not only in BOTH.
• If the background service of the current version fails to start correctly, the app can replace it safely without a reboot; an unconfirmed attempt still asks for one normal restart.
• Shorter and clearer pending-update notice.
• After a display call that stalls for more than five seconds, the app keeps the lower screen OFF in BOTH until the next
  reboot or a manual fix toggle, instead of turning it back on after the next mode change or wake. This avoids re-entering
  a vendor display-reset loop that can blank both screens.
• Going to sleep in BOTH, the app no longer turns the lower screen back on when the system switches it off a moment
  before the top screen, so the lower screen stays off during sleep. Switching from TOP to BOTH still turns it on at once.

Display-recovery actions are unchanged except for the boot-scoped stall containment and the sleep-order fix above; CPU Fix, Closed-Lid Wake Guard
and the documented hardware limitations are unchanged.