Verify retransmits POST and aborts the episode (realign) after
RB_VERIFY_TIMEOUT_MS, but re-arms that timer whenever an owing seat's
tip moves, on the theory that it is still replaying. A seat that already
finished the episode and runs Live past the target also moves its tip,
so a lost POST from it kept the others in Verify until the liveness
timeout ended the match (3 seats across a Mac and a PC: two seats waited
for "peer POST" at tick 12099 while the third was Live at 12114; #636).
Only progress up to the episode target now re-arms the wait; past it the
timeout is honoured and the episode realigns.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Shokunin