Rev 9: REDIRECTION connects the exits you choose

Playtesting read the card right and the engine had it wrong. "Placing
the A tokens on one set of exits & the B tokens on the other" means
the two exits you mark BECOME a pair — and their former partners pair
with each other — not that the two exits trade destinations. Under
rev 9, click the exit and then the exit you want it to connect TO
(the hint now says so); already-connected exits are refused. Earlier
games keep the swap their logs were validated against. Test pins the
full four-way rewiring.

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

packages/engine/test/casting.test.ts

@@ -769,3 +769,28 @@ describe("rules revision 8", () => {
     if (!r.ok) expect(r.error).toMatch(/warp shimmers/);
   });
 });
+
+describe("redirection (rules rev 9)", () => {
+  it("the two chosen exits connect; their old partners pair with each other", () => {
+    let { state } = createGame({ playerIds: ["alice", "bob"], seed: 42, sets: ["basic"], deckRev: 9 });
+    state = toRound2(state);
+    const me = activePlayer(state);
+    // Pick two exits that are NOT already partners.
+    const warps = state.board.warps;
+    const wa = warps[0]!;
+    const wb = warps.find((w) => cellKey(w.from.cell) !== cellKey(wa.from.cell) &&
+                                  cellKey(w.from.cell) !== cellKey(wa.to.cell))!;
+    const paCell = { ...wa.to.cell };
+    const pbCell = { ...wb.to.cell };
+    const rd = giveCard(state, me.id, "redirection", "RD", 0);
+    state = must(state, me.id, {
+      type: "cast", instanceId: rd.instanceId,
+      target: { kind: "cell", cell: wb.from.cell }, params: { cell: wa.from.cell },
+    });
+    const after = (from: Cell) => state.board.warps.find((w) => cellKey(w.from.cell) === cellKey(from))!;
+    expect(cellKey(after(wa.from.cell).to.cell)).toBe(cellKey(wb.from.cell));
+    expect(cellKey(after(wb.from.cell).to.cell)).toBe(cellKey(wa.from.cell));
+    expect(cellKey(after(paCell).to.cell)).toBe(cellKey(pbCell));
+    expect(cellKey(after(pbCell).to.cell)).toBe(cellKey(paCell));
+  });
+});