The door can be held open, as both key cards always promised

MASTER KEY and PICK LOCK each read: "You may 'hold the door open' for
others, if you wish" — and the engine always slammed it at end of
turn. Now the cast takes a hold param: the door stays unlocked past
the turn, for anyone, as long as its holder stands adjacent and
alive. A step away, a shove, a teleport, or a killing blow lets it
swing shut — swept after every command, since anything can move a
wizard. New state, new param: no old ledger contains either, so no
rev gate is needed.

The client offers a "hold the door open" checkbox when either card is
selected; a held door shows pale with a green jamb ("held open by a
standing wizard"), and the chronicle records the holding and the
shutting. Pinned: a held door outlives the turn and admits the other
wizard; walking away releases it.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

packages/engine/src/view.ts

@@ -62,6 +62,8 @@ export interface GameView {
   /** Accumulated attack damage per edge (public — cracks show). */
   wallDamage: Record<string, number>;
   openDoorEdges: string[];
+  /** Door edges held open by a standing wizard. */
+  heldDoorEdges: string[];
   /** Illusion edges YOU know are fake (creator or saw through); others see walls. */
   knownIllusionEdges: string[];
   creatures: CreatureState[];
@@ -137,6 +139,7 @@ export function viewFor(state: GameState, playerId: PlayerId): GameView {
     doorStates: { ...state.doorStates },
     wallDamage: { ...state.wallDamage },
     openDoorEdges: [...state.openDoorEdges],
+    heldDoorEdges: state.heldDoors.map((h) => h.key),
     knownIllusionEdges,
     creatures: state.creatures.map((c) => ({ ...c, scorchedThisTurn: [...c.scorchedThisTurn] })),
     wandCharges: { ...state.wandCharges },