Honor Caladan auction knowledge in Truthtrance

game/auction-inspection-source.ts

@@ -0,0 +1,15 @@
+import type { Game } from './engine';
+
+/** Physical card identity is not a lot identity: the same card can later
+ * re-enter an ordinary auction. Return null when no current lot exists. */
+export function originalAuctionInspectionLot(
+  game: Pick<Game, 'richeseAuction' | 'auction' | 'turn'>,
+): string | null {
+  if (game.richeseAuction) return typeof game.richeseAuction.event === 'string'
+    ? game.richeseAuction.event : null;
+  const auction = game.auction;
+  if (!auction || !Number.isSafeInteger(auction.index) || auction.index < 0 ||
+      !Array.isArray(auction.cards) || !auction.cards[auction.index] ||
+      typeof auction.cards[auction.index].id !== 'string') return null;
+  return JSON.stringify([auction.occupiedEvent ?? game.turn, auction.index, auction.cards[auction.index].id]);
+}