Rematches, seats that travel by phrase, the keeper's bell with the hour where they live, the host's leave for the gallery to talk, and seats doubted before they are dropped

Ported from Wiz-War, where each earned its keep. All on the ledger:
galleryTalk, challenge and rematch lines, gallery chat signed with a
name, held seats on a rematch table's room line. Twenty-two protocol
checks against a scratch server and a replay after restart.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Jm2auWk6RP71CjaAb4FMoG

README.md

@@ -2,7 +2,9 @@
 
 The shared infrastructure of Wiz-War and Waving Hands, extracted so the next
 game starts with all of it in place: the hall, room codes and tables, the
-Peanut Gallery, table talk, append-only ledgers replayed through a
+Peanut Gallery (and the host's leave for it to talk), table talk, rematches,
+seats that travel between devices by phrase, the keeper's bell, append-only
+ledgers replayed through a
 deterministic engine, the rules revision, the reports desk, the deploy
 script with its determinism gate, nightly rollup and backup, Sentry with
 Slack alerts, and the visitors, pulse and reports skills for Claude.