Add campaign shell and map generation recovery

src/rules/dungeon.test.ts

@@ -3,6 +3,7 @@ import { describe, expect, it } from "vitest";
 import { sampleContentPack } from "@/data/sampleContentPack";
 
 import {
+  addSecretDoorFallback,
   expandLevelFromExit,
   getUnresolvedExits,
   initializeDungeonLevel,
@@ -84,4 +85,17 @@ describe("dungeon state", () => {
       }),
     ).toThrow("already connected");
   });
+
+  it("adds a fallback secret exit when progression stalls", () => {
+    const levelState = initializeDungeonLevel({ content: sampleContentPack });
+    const room = levelState.rooms["room.level1.start"]!;
+
+    room.exits = [];
+
+    const fallback = addSecretDoorFallback(levelState);
+
+    expect(fallback.levelState.secretDoorUsed).toBe(true);
+    expect(fallback.room.id).toBe("room.level1.start");
+    expect(fallback.exit.exitType).toBe("secret");
+  });
 });