Rev 15: the held doorway carries sight — the whole point of holding it

The table holds doors open to cast back through them at pursuers;
our held door opened for feet but not for eyes. From rev 15 a held
door is an open doorway to sight — casting at players, creatures,
and squares sees through it, the client's dimming aid and the
automatons alike (they share sightedCellsFor). REMOVE LOCK's "still
considered to block L.O.S." stands: that speaks of a CLOSED door,
and an unheld unlocked door still blocks. Rev-gated because rev-14
ledgers may already contain holds and must replay blind.

Pinned three ways: the holder blasts a pursuer through the held
doorway; an unheld unlocked door still blocks; rev 14 stays blind.

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

packages/server/src/rooms.ts

@@ -54,7 +54,7 @@ export interface Room {
 const rooms = new Map<string, Room>();
 
 /** Rules revision new games are dealt under (stored games keep their own). */
-const RULES_REV = 14;
+const RULES_REV = 15;
 
 const ROOM_CODE_ALPHABET = "ABCDEFGHJKLMNPQRSTUVWXYZ23456789";