The tally: what the ledgers add up to, in every game's about panel, with the game's own lines through GameSpec.tally

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

CONVENTIONS.md

@@ -64,6 +64,10 @@ README.
   where the keeper roosts. It lives in the about panel; the colophons, the
   rules page and the guide each carry a one-line mail link.
 
+- **The tally** sits in the about panel: what the ledgers add up to
+  (tables, games begun and finished, names seated, turns, time at the
+  table, games with a bot, talk), counted on demand from the files and
+  cached a minute. A game adds its own lines through `GameSpec.tally`.
 - **Table options** are the host's choices when opening a table (a
   variant, a side, a length): the game declares them in `GameSpec.options`,
   the hall renders them as selects, the room line records them, and