Illusion walls shimmer until YOU test them (rules rev 29)

Per the owner's design — and truer to a real table, where the cast is
public: every illusion wall's location is open knowledge, rendered as a
shimmering wall to any player whose eyes have not yet ruled on it.
Testing is an explicit act: tap the shimmer (or bump into it) and a
modal explains the 50/50 and offers 'Roll to test your eyes' — the new
testIllusion command rolls once, then the wall either hardens or
dissolves for you alone. Nobody's verdict is moved by watching someone
else stroll through (the Q3WZ mystery: an automaton walking through
its own round-1 fake). Untested walls block movement and sight without
consuming RNG; the pre-29 lazy belief roll is preserved for stored
games. Automatons doubt free shimmers on their best crossing before
spending any card on that wall.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0138A8CjeQRpvzKxuMfz1Bqc

packages/engine/src/view.ts

@@ -70,6 +70,9 @@ export interface GameView {
   createdEdges: string[];
   /** Illusion edges YOU know are fake (creator or saw through); others see walls. */
   knownIllusionEdges: string[];
+  /** Every illusion edge and YOUR verdict on it (rules rev 29+): untested
+   * shimmers, believes renders solid, mine/seesThrough are ghosts. */
+  illusionEdges: Record<string, "untested" | "believes" | "seesThrough" | "mine">;
   creatures: CreatureState[];
   /** Charges left on displayed wands (public), by card instance id. */
   wandCharges: Record<string, number>;
@@ -90,11 +93,20 @@ export interface GameView {
 export function viewFor(state: GameState, playerId: PlayerId): GameView {
   const you = state.players.find((p) => p.id === playerId);
   // Illusion walls render as real walls unless this viewer knows better.
+  // From rules rev 29 their locations are open knowledge (the cast is
+  // public at a table) — what stays personal is each player's verdict.
   const base = boardView(state);
+  const rev29 = (state.config.deckRev ?? 1) >= 29;
   const knownIllusionEdges: string[] = [];
+  const illusionEdges: Record<string, "untested" | "believes" | "seesThrough" | "mine"> = {};
   let edges = base.edges;
   for (const [key, wall] of Object.entries(state.illusionWalls)) {
     const knows = wall.createdBy === playerId || wall.belief[playerId] === "seesThrough";
+    if (rev29) {
+      illusionEdges[key] =
+        wall.createdBy === playerId ? "mine"
+        : wall.belief[playerId] ?? "untested";
+    }
     if (knows) {
       knownIllusionEdges.push(key);
     } else {
@@ -147,6 +159,7 @@ export function viewFor(state: GameState, playerId: PlayerId): GameView {
     heldDoorEdges: state.heldDoors.map((h) => h.key),
     createdEdges: Object.keys(state.createdEdges),
     knownIllusionEdges,
+    illusionEdges,
     creatures: state.creatures.map((c) => ({ ...c, scorchedThisTurn: [...c.scorchedThisTurn] })),
     wandCharges: { ...state.wandCharges },
     dimWarps: state.dimWarps.map((w) => ({ a: { ...w.a }, b: { ...w.b } })),