引入游玩回合与开场收口，抽出可替换 agent 司机并支持运行中止；完善预设洞位、世界书拼装与试跑，并打磨会话运行时与 Web 交互。

Co-authored-by: Cursor <cursoragent@cursor.com>

tests/run-abort.test.ts

@@ -0,0 +1,31 @@
+import { describe, expect, it } from "vitest";
+import { MockLlmProvider } from "../src/llm/client.js";
+import {
+  isAbortError,
+  runWithAbortSignal,
+  throwIfAborted,
+} from "../src/llm/run-abort.js";
+
+describe("run abort", () => {
+  it("isAbortError detects AbortError name", () => {
+    const err = new Error("This operation was aborted");
+    err.name = "AbortError";
+    expect(isAbortError(err)).toBe(true);
+    expect(isAbortError(new Error("LLM request failed"))).toBe(false);
+  });
+
+  it("throwIfAborted raises AbortError when the signal is aborted", () => {
+    const ac = new AbortController();
+    ac.abort();
+    expect(() => throwIfAborted(ac.signal)).toThrowError(/aborted/i);
+  });
+
+  it("mock LLM respects the active abort signal", async () => {
+    const llm = new MockLlmProvider(["ok"]);
+    const ac = new AbortController();
+    ac.abort();
+    await expect(
+      runWithAbortSignal(ac.signal, () => llm.complete([{ role: "user", content: "x" }])),
+    ).rejects.toMatchObject({ name: "AbortError" });
+  });
+});