Track becomes a deck card, Departments become decks, and trains must be made up to leave, industry restrictions enforced, update display and add a new game button

src/engine/setup.ts

@@ -18,7 +18,7 @@ import {
   OFFICE_PROFILES,
   MAINLINE_PROFILES,
   mainlineProfile,
-  TRACK_SUPPLY,
+  TRACK_CARDS,
   ROLLING_STOCK_SUPPLY,
   STAGES_PER_DAY,
   TIMETABLED_TRAINS,
@@ -90,7 +90,11 @@ export function buildDeck(mode: GameConfig['mode'] = 'competitive'): Card[] {
       for (let i = 0; i < c.copies; i++) push({ kind: 'action', key: c.key });
     }
   }
-  // Track is NOT in the deck any more — it is a per-player supply (content.ts TRACK_SUPPLY).
+  // Track is IN the deck, 104 cards of it — the single largest category, and the reason building a
+  // district costs you the industry or train you did not draw instead.
+  for (const t of TRACK_CARDS) {
+    for (let i = 0; i < t.copiesInDeck; i++) push({ kind: 'track', geometry: t.geometry, hand: t.hand });
+  }
 
   return cards;
 }
@@ -152,7 +156,6 @@ function buildOfficeArea(owner: PlayerIndex): OfficeArea {
     adOccupancy: [],
     heldAtLimits: [],
     dispatchUsedToday: [],
-    trackSupply: new Map(TRACK_SUPPLY.map((t) => [`${t.geometry}:${t.hand}`, t.perPlayer])),
   };
 }
 
@@ -254,11 +257,13 @@ export function createGame(opts: SetupOptions): GameState {
     hands.set(p, shuffled.slice(cursor, cursor + 3));
     cursor += 3;
   }
-  const departments: (CardId | null)[] = [
-    shuffled[cursor++] ?? null,
-    shuffled[cursor++] ?? null,
-    shuffled[cursor++] ?? null,
-  ];
+  // §4.6-4.7 — three cards turned face up beside the deck. Each is the bottom of a Department pile
+  // that grows as players discard onto it.
+  const departments: CardId[][] = [[], [], []];
+  for (const pile of departments) {
+    const card = shuffled[cursor++];
+    if (card) pile.push(card);
+  }
   const homeOffice = shuffled.slice(cursor);
 
   const redFlags = new Map<PlayerIndex, boolean>();