Dimensional warps get the edge-warp treatment

Placing the two tokens worked, but using them asked too much: the
only affordance was a "Step through the warp" button in the actions
row, easy to miss and far from the board. Now standing on a warp
token pulses its twin with the same green dashed ring the lettered
edge openings use, and clicking the twin steps you through — one
gesture, learned once, working for both kinds of warp. The button
stays for those who found it.

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

packages/web/src/App.svelte

@@ -313,6 +313,19 @@
       clearSelection();
       return;
     }
+    const meNow = view.players.find((p) => p.id === view.you);
+    if (!selectedCard && meNow) {
+      const pos = meNow.position;
+      const pair = view.dimWarps.find((w) =>
+        (w.a.x === pos.x && w.a.y === pos.y) || (w.b.x === pos.x && w.b.y === pos.y));
+      if (pair) {
+        const dest = pair.a.x === pos.x && pair.a.y === pos.y ? pair.b : pair.a;
+        if (dest.x === cell.x && dest.y === cell.y) {
+          dispatch({ type: "warpStep" });
+          return;
+        }
+      }
+    }
     if (selectedCreature) {
       const creature = view.creatures.find((c) => c.id === selectedCreature);
       if (creature) {