Fix dumb AI knocks (e.g. Maya knocking on 13 points) by adding opponent
threat checks and a hard cap of 10 to should_knock_early(). Remove dead
should_go_out_early() call whose return value was never used. Retune knock
chance tiers to be more conservative at higher projected scores.
On the client side, fix round-end reveal sequencing so the last player's
swap/discard animation plays before the reveal sequence starts, and prevent
re-renders from clobbering swap animations during reveals. Also make the
turn-pulse shake configurable via timing-config and target only cards.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>