Say who is playing, what you can press, and where you are in the Stage

Mostly presentation, plus one rules fix found on the way.

src/engine/apply.ts

@@ -604,9 +604,9 @@ function checkPlay(
     case 'modifier': {
       if (!placement) return 'NO_PLACEMENT';
       if (area.grid.has(coordKey(placement))) return 'NOT_CONNECTED';
-      // §9 — a Modifier is not track. It must sit adjacent to a Facility (one of the nine nearby
-      // spots) or it does nothing at all, so placing it anywhere else is not a legal play.
-      return adjacentFacilityCoord(area, placement) ? null : 'NOT_CONNECTED';
+      // §9 — a Modifier is not track. It must sit adjacent to a Facility THAT CAN HOST IT (one of
+      // the nine nearby spots) or it does nothing at all, so anywhere else is not a legal play.
+      return adjacentFacilityCoord(area, placement, card.kind.modifier) ? null : 'NOT_CONNECTED';
     }
     case 'enhancement': {
       if (!placement) return 'NO_PLACEMENT';
@@ -1423,15 +1423,33 @@ function buildFreightFacility(kind: FreightKind): Facility {
  * Facility found instead. Modelling the per-Stage choice needs an extra decision point in the
  * Load/Unload phase and is not worth it until the mechanic has been played.
  */
-function adjacentFacilityCoord(area: OfficeArea, coord: GridCoord): GridCoord | null {
+/**
+ * The neighbouring Facility a Modifier would attach to — and, when a Modifier is named, only one it
+ * is actually ALLOWED to attach to.
+ *
+ * Every Modifier prints its host: a Waiting Area, a Restaurant and a Hotel go beside a Passenger
+ * Facility, Forklifts beside a Freight House or Packing Sheds, and so on. That was not checked. Any
+ * square touching ANY facility was offered — so a Waiting Area was legal beside a Mine Tipple and
+ * `applyModifier` then handed its extra Porter to whichever facility the scan reached first, which
+ * could be a different one again. The player saw three legal spots for a card that has one.
+ */
+function adjacentFacilityCoord(
+  area: OfficeArea,
+  coord: GridCoord,
+  modifier?: ModifierKind,
+): GridCoord | null {
   // Q7 — nothing exists above the Running Track, so §9's "nine nearby spots" is really six.
   if (coord.row > area.runningRow) return null;
+  const hosts = modifier ? modifierProfile(modifier).hosts : null;
   for (let dr = -1; dr <= 1; dr++) {
     for (let dc = -1; dc <= 1; dc++) {
       if (dr === 0 && dc === 0) continue;
       const c = { row: coord.row + dr, col: coord.col + dc };
       if (c.row > area.runningRow) continue;
-      if (area.grid.get(coordKey(c))?.facility) return c;
+      const f = area.grid.get(coordKey(c))?.facility;
+      if (!f) continue;
+      if (hosts && !hosts.includes(f.subtype)) continue;
+      return c;
     }
   }
   return null;
@@ -1583,7 +1601,7 @@ export function isLockedOut(area: OfficeArea, kind: FreightKind): boolean {
 
 /** Applies a Modifier's printed effect to the Facility it was placed beside (content.ts). */
 function applyModifier(area: OfficeArea, coord: GridCoord, modifier: ModifierKind): void {
-  const target = adjacentFacilityCoord(area, coord);
+  const target = adjacentFacilityCoord(area, coord, modifier);
   if (!target) return;
   const f = area.grid.get(coordKey(target))?.facility;
   if (!f) return;