fix: sandbox resource cleanup and CI test stability

  - Dispose subagent sandbox after task_run completion
  - Add file system sync delay for resume test on CI
  - Improve test cleanup with retries and explicit sandbox disposal

Author: Gui-Yue

src/core/agent.ts

@@ -698,8 +698,12 @@ export class Agent {
 
     const subAgent = await Agent.create(subAgentConfig, this.deps);
     subAgent.lineage = [...this.lineage, this.agentId];
-    const result = await subAgent.complete(config.prompt);
-    return result;
+    try {
+      const result = await subAgent.complete(config.prompt);
+      return result;
+    } finally {
+      await (subAgent as any).sandbox?.dispose?.();
+    }
   }
 
   static async resume(agentId: string, config: AgentConfig, deps: AgentDependencies, opts?: { autoRun?: boolean; strategy?: ResumeStrategy }): Promise<Agent> {

tests/integration/agent/subagent.test.ts

@@ -126,7 +126,8 @@ runner.test('task_run 协调多子代理并结合 todo / 权限 / Hook', async (
   const stage1 = await harness.chatStep({
     label: '阶段1',
     prompt:
-      '请先调用 coordination_probe，且 stage 参数必须是“阶段1-规划”。随后委派分析子代理总结“更新task-run测试”要点，并创建一条 ResumeTask 的 todo。',
+      '请先调用 coordination_probe，且 stage 参数必须是“阶段1-规划”。' +
+      '你的回复中必须原样包含“阶段1”。随后委派分析子代理总结“更新task-run测试”要点，并创建一条 ResumeTask 的 todo。',
     expectation: {
       includes: ['阶段1', 'ResumeTask'],
     },

tests/integration/collaboration/room-collab.test.ts

@@ -191,10 +191,13 @@ runner.test('Room 多代理协作保持事件与Todo一致', async () => {
   detachPermissionRequired();
   detachPermissionDecided();
 
+  await (planner as any).sandbox?.dispose?.();
+  await (dev as any).sandbox?.dispose?.();
   await pool.delete('agt-planner');
   await pool.delete('agt-dev');
-  fs.rmSync(storeDir, { recursive: true, force: true });
-  fs.rmSync(baseWorkDir, { recursive: true, force: true });
+  await wait(200);
+  fs.rmSync(storeDir, { recursive: true, force: true, maxRetries: 5, retryDelay: 50 });
+  fs.rmSync(baseWorkDir, { recursive: true, force: true, maxRetries: 5, retryDelay: 50 });
 });
 
 export async function run() {

tests/unit/core/agent.test.ts

@@ -148,6 +148,9 @@ runner
     const status = await agent.status();
     expect.toBeGreaterThan(status.stepCount, 0);
 
+    // 等待文件系统写入完成（CI 环境可能有更激进的写缓冲）
+    await new Promise((resolve) => setTimeout(resolve, 50));
+
     const resumed = await Agent.resume(agent.agentId, config, deps);
 
     const resumedResult = await resumed.chat('checking resume');