Implement Enhancements, Mainline modifiers and Maneuvers; fix unplayable track

test/track.test.ts

@@ -36,6 +36,7 @@ const straight = (standing: RollingStock[] = []): TrackCard => ({
   standing,
   facility: null,
   modifiers: [],
+  enhancements: [],
 });
 
 /** A straight rotated to run north-south. Needed to meet the Office's junction stubs (Gap 11). */
@@ -45,6 +46,7 @@ const nsStraight = (standing: RollingStock[] = []): TrackCard => ({
   standing,
   facility: null,
   modifiers: [],
+  enhancements: [],
 });
 
 const turnout = (o?: TurnoutOrientation): TrackCard => ({
@@ -55,6 +57,7 @@ const turnout = (o?: TurnoutOrientation): TrackCard => ({
   standing: [],
   facility: null,
   modifiers: [],
+  enhancements: [],
 });
 
 const officeCard = (): TrackCard => ({
@@ -63,6 +66,7 @@ const officeCard = (): TrackCard => ({
   standing: [],
   facility: null,
   modifiers: [],
+  enhancements: [],
 });
 
 const lockedFacility = (): TrackCard => ({
@@ -84,6 +88,7 @@ const lockedFacility = (): TrackCard => ({
     usedThisStage: { laborers: 0, porters: 0 },
   },
   modifiers: [],
+  enhancements: [],
 });
 
 const car = (): RollingStock => ({ type: 'boxcar', loaded: false });
@@ -100,6 +105,9 @@ function areaFrom(cards: Record<string, TrackCard>, officeCoord: GridCoord): Off
     limitsWest: { row: officeCoord.row, col: officeCoord.col - 2 },
     limitsEast: { row: officeCoord.row, col: officeCoord.col + 2 },
     adOccupancy: [],
+    heldAtLimits: [],
+    dispatchUsedToday: [],
+    trackSupply: new Map(),
   };
 }
 
@@ -159,6 +167,7 @@ describe('ports and geometry', () => {
       standing: [],
       facility: null,
       modifiers: [],
+  enhancements: [],
     };
     assert.deepEqual(exitsFrom(r, 's'), ['w']);
   });