Implement Enhancements, Mainline modifiers and Maneuvers; fix unplayable track

test/advance.test.ts

@@ -9,7 +9,7 @@ import assert from 'node:assert/strict';
 
 import { advance, pump } from '../src/engine/advance.ts';
 import { applyIntent } from '../src/engine/apply.ts';
-import { STAGES_PER_DAY, lengthProfile } from '../src/engine/content.ts';
+import { STAGES_PER_DAY, lengthProfile, TOTAL_ROLLING_STOCK } from '../src/engine/content.ts';
 import { legalActions } from '../src/engine/legal.ts';
 import { createGame } from '../src/engine/setup.ts';
 import type { GameConfig, GameState } from '../src/engine/state.ts';
@@ -523,7 +523,7 @@ describe('MILESTONE: a full solitaire game runs headless', () => {
   });
 
   it('conserves rolling stock across a whole game', () => {
-    // Nothing may be created or destroyed: 62 pieces, wherever they sit.
+    // Nothing may be created or destroyed: every piece in the roster, wherever it sits.
     const s = game(88);
     playToCompletion(s, 88);
 
@@ -539,6 +539,6 @@ describe('MILESTONE: a full solitaire game runs headless', () => {
         }
       }
     }
-    assert.equal(count, 62, 'rolling stock leaked or was duplicated');
+    assert.equal(count, TOTAL_ROLLING_STOCK, 'rolling stock leaked or was duplicated');
   });
 });