Creatures walk open doorways, and the interruption gets its fanfare

Player movement asked the full question of a door — removed, keyed
this turn, or held — while creature movement only saw "door" and
refused, so a skeleton balked at a doorway its master had unlocked
for good. One doorIsOpen() now answers for both, and an open doorway
costs a wraith none of its wall passes.

And the interruption window earns the modal it deserved: "The maze
holds its breath" — the card shown, the instruction plain, dismissed
with "Seize it". No more hunting the rail for a slip while time
stands parted.

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

packages/web/src/App.svelte

@@ -39,6 +39,11 @@
   /** Which pending attack the player has already acknowledged (modal dismissed). */
   const fxWorkshop = new URLSearchParams(location.search).has("fx");
   let attackNoticeSeen = $state<string | null>(null);
+  /** The interruption fanfare, dismissed once per window. */
+  let momentSeen = $state(false);
+  $effect(() => {
+    if (!view?.outOfTurnWindow) momentSeen = false;
+  });
   /** Live spell flourishes on the board (cosmetic, self-expiring). */
   let boardFx = $state<BoardFx[]>([]);
   let fxCancels: (() => void)[] = [];
@@ -1008,6 +1013,20 @@
     </div>
   {/if}
 
+  {#if view && view.outOfTurnWindow?.playerId === view.you && !momentSeen}
+    <div class="scrim attack-scrim" role="alertdialog" aria-label="your interruption">
+      <div class="attack-notice">
+        <div class="attack-headline">The maze holds its breath</div>
+        <div class="attack-card"><Card card={{ instanceId: "moment", cardId: view.outOfTurnWindow.kind }} /></div>
+        <div class="attack-power">
+          Time parts for your {cardDef(view.outOfTurnWindow.kind).name} —
+          pick an attack card and a target, or let the moment pass.
+        </div>
+        <button class="stamp big" onclick={() => (momentSeen = true)}>Seize it</button>
+      </div>
+    </div>
+  {/if}
+
   {#if openingRolls}
     <div class="scrim attack-scrim" role="alertdialog" aria-label="the roll for first wizard">
       <div class="attack-notice">