Rev 18: the democratic monster's claw outlives the first wizard

Its one-attack-per-round refreshed inside beginTurnFor when the turn
index matched the roll-off winner's seat — and only the living begin
turns, so once that wizard fell the claw never refreshed again: one
attack, then a lifetime of harmless bumping. The refresh now lives at
the true round boundary in the turn-advance loop, which passes dead
seats without skipping the count. Earlier ledgers keep their gummed
monster and replay so.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

packages/server/src/rooms.ts

@@ -54,7 +54,7 @@ export interface Room {
 const rooms = new Map<string, Room>();
 
 /** Rules revision new games are dealt under (stored games keep their own). */
-const RULES_REV = 17;
+const RULES_REV = 18;
 
 const ROOM_CODE_ALPHABET = "ABCDEFGHJKLMNPQRSTUVWXYZ23456789";