Function restore_seat_state 

pub fn restore_seat_state(
    db: &Db,
    org: &str,
    project: &str,
    label: &str,
    state: Option<SeatState>,
    expected: SeatState,
) -> Result<bool>

Put a row’s seat state back to what it held before a refused spawn, but only while the row still holds expected - the state that spawn wrote. A newer decision (a close landing mid-spawn) stands: the restore undoes the spawn’s own write, never the reader’s.