fixed train# specific rules. cleaned up display topline and train display on division map

src/engine/state.ts

@@ -256,6 +256,13 @@ export type CrewTray = {
   facing?: 'n' | 's' | 'e' | 'w';
   position: NodeRef;
   movesUsed: number;
+  /**
+   * X18 Circus Train — "one turn stopped on any track (circus set-up) earns 1 point", claimed once.
+   *
+   * Recorded on the tray rather than the player because it is the TRAIN that sets up, and an Extra
+   * runs once and is gone; there is no second visit to claim it on.
+   */
+  stopPointClaimed?: boolean;
 };
 
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