Fear's spaces are walked, not flown — warps carry the dread

The owner caught the metric: a wizard eight squares away as the crow
flies stood three WALKED spaces away through a warp, and the manhattan
check waved it through (while falsely blocking approaches manhattan-
near through solid walls). fearRepels now measures walkingDistance —
the same BFS the maze walks, warps included, walls respected. The
board's aura follows suit: the diamond becomes a violet wash on every
square within three walked spaces, computed by the same BFS, warp
mouths included. No rev-32 ledger existed yet, so the metric corrects
inside rev 32.

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

packages/engine/test/creatures.test.ts

@@ -739,7 +739,7 @@ describe("fear holds off monsters and unwilling feet alike (rules rev 32)", () =
       wallPassesPerTurn: 0, wallPassUsed: 0, attackUsed: false, justCreated: false,
       scorchedThisTurn: [],
     } as never);
-    state.edgeOverrides[edgeKey({ x: 2, y: 8 }, "S")] = "open";
+    for (const y of [5, 6, 7, 8]) state.edgeOverrides[edgeKey({ x: 2, y }, "S")] = "open";
     while (state.players[state.turn.activeIndex]!.id !== "a") {
       const r = applyCommand(state, state.players[state.turn.activeIndex]!.id, { type: "endTurn", draw: 0 });
       if (!r.ok) throw new Error(r.error);