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/phase-runtime.test.ts

@@ -5,6 +5,8 @@ import {
   MockLlmProvider,
 } from "../src/llm/client.js";
 import { PhaseRuntime, createDecision } from "../src/runtime/phase-runtime.js";
+import { createSession } from "../src/runtime/phase-machine.js";
+import { Blackboard } from "../src/blackboard/blackboard.js";
 
 describe("phase runtime", () => {
   it("auto-loads default orchestrator and awaits first user input", async () => {
@@ -47,4 +49,82 @@ describe("phase runtime", () => {
       true,
     );
   });
+
+  it("play turn runs declared pipeline without review and waits for input", async () => {
+    const session = createSession("default");
+    session.phase = "waiting_user";
+    session.waitingReason = { kind: "input" };
+    session.slots = {
+      designInstanceReady: true,
+      uiLifecycleStage: "play",
+      playLayerActive: true,
+      startupCompleted: true,
+    };
+    const blackboard = new Blackboard();
+    blackboard.write({
+      tag: "设计.worker集",
+      content: JSON.stringify({
+        version: 1,
+        play_slots: {
+          auditor: false,
+          gm: true,
+          narrator: true,
+          perspective: false,
+        },
+        workers: [
+          { ref: "world-simulator", acceptance: "continue" },
+          { ref: "narrator", acceptance: "review" },
+        ],
+      }),
+      source: "test",
+    });
+    const runtime = new PhaseRuntime({
+      autoStubWorker: true,
+      initialSession: session,
+      initialBlackboardItems: blackboard.exportItems(),
+    });
+    await runtime.submitInput("我网购一个金首饰试试");
+    expect(runtime.getSession().waitingReason?.kind).toBe("input");
+    expect(runtime.getSession().artifacts.map((a) => a.workerId)).toEqual([
+      "world-simulator",
+      "narrator",
+    ]);
+    expect(runtime.getSession().artifacts.every((a) => a.status === "accepted")).toBe(
+      true,
+    );
+  });
+
+  it("retryStuckRun restores the in-flight worker snapshot and reruns", async () => {
+    const runtime = new PhaseRuntime({ autoStubWorker: true });
+    await runtime.start();
+    await runtime.submitInput("网恋对象对话");
+    await runtime.submitDecision(
+      createDecision({
+        action: "run_worker",
+        reason: "编排创作流程",
+        workerId: "design-flow",
+        requiresApproval: false,
+      }),
+    );
+    const snap = runtime.getLastWorkerRunSnapshot();
+    expect(snap?.workerId).toBe("design-flow");
+    const artifactsBefore = runtime.getSession().artifacts.length;
+
+    const session = runtime.getSession();
+    session.phase = "running";
+    session.waitingReason = undefined;
+    session.currentWorkerId = "design-flow";
+
+    await runtime.retryStuckRun();
+    expect(runtime.getSession().artifacts.length).toBeGreaterThan(artifactsBefore);
+    expect(
+      runtime.getSession().artifacts.filter((a) => a.workerId === "design-flow").length,
+    ).toBeGreaterThanOrEqual(2);
+  });
+
+  it("retryStuckRun throws when nothing is running", async () => {
+    const runtime = new PhaseRuntime({ autoStubWorker: true });
+    await runtime.start();
+    await expect(runtime.retryStuckRun()).rejects.toThrow("当前没有可重试的执行");
+  });
 });