Use native synchronous z-order binding (koffi) instead of async PowerShell
for overlay positioning, eliminating the 200-500ms delay that left the overlay
behind mpv after restore. Hide the overlay immediately when mpv is minimized
so the full show/reveal/z-order flow triggers cleanly on restore.
Also adds hover suppression after visibility recovery and window resize to
prevent spurious auto-pause, Windows secondary subtitle titlebar fix, and
z-order sync burst retries on geometry changes.
Kyle
3e7573c9fc