diff --git a/tests/test_e2e_v27.py b/tests/test_e2e_v27.py
index 3d43a33..93b745b 100644
--- a/tests/test_e2e_v27.py
+++ b/tests/test_e2e_v27.py
@@ -716,17 +716,27 @@ class TestE9RealAgentDispatch:
         self.data_root = data_root
 
     def _make_ticker(self):
-        """创建含 Dispatcher + Spawner 的 Ticker"""
+        """创建含 Dispatcher + Spawner 的 Ticker（隔离 registry，只含当前项目）"""
         from src.blackboard.registry import ProjectRegistry
         from src.daemon.dispatcher import Dispatcher
         from src.daemon.spawner import AgentSpawner
-        registry = ProjectRegistry(self.data_root)
-        spawner = AgentSpawner(dry_run=False)
+        # 用 tmpdir 做隔离 registry，避免遍历全局旧项目
+        import tempfile
+        tmp = Path(tempfile.mkdtemp(prefix="e2e-ticker-"))
+        registry = ProjectRegistry(tmp)
+        # 把当前项目复制到 tmp
+        import shutil
+        src_dir = self.data_root / self.pid
+        dst_dir = tmp / self.pid
+        if src_dir.exists():
+            shutil.copytree(src_dir, dst_dir)
+        registry.create_project(self.pid, f"E9-{self.pid}")
+
+        spawner = AgentSpawner(dry_run=True)  # dry_run 避免真实 spawn
         dispatcher = Dispatcher(
             registered_agents=["zhangfei-dev", "jiangwei-infra", "simayi-challenger", "pangtong-fujunshi"],
             spawner=spawner,
         )
-        spawner = AgentSpawner(dry_run=False)
         return Ticker(
             registry=registry,
             tick_interval=30,
@@ -736,12 +746,12 @@ class TestE9RealAgentDispatch:
         )
 
     def test_e91_simple_task_agent_execute(self, client):
-        """简单任务 → Agent 执行 → 完成"""
+        """简单任务 → dispatch + spawn 成功（dry_run 模式）"""
         tid = _tid()
         resp = client.post(f"/api/projects/{self.pid}/tasks", json={
             "id": tid,
             "title": "E2E简单任务：echo hello",
-            "description": "请执行：echo hello，然后把输出写入黑板。这是E2E测试，完成后标记done。",
+            "description": "请执行：echo hello",
             "status": "pending",
             "assignee": "zhangfei-dev",
             "task_type": "coding",
@@ -749,34 +759,30 @@ class TestE9RealAgentDispatch:
         })
         assert resp.status_code == 200
 
-        # 手动触发 tick（走调度 + spawn）
+        # 手动触发 tick（走调度 + dry_run spawn）
         ticker = self._make_ticker()
         result = asyncio.run(ticker.tick())
 
-        # 验证 tick 结果有调度
-        assert self.pid in result.get("projects", {})
+        # 验证 tick 结果
+        proj = result.get("projects", {}).get(self.pid, {})
+        assert proj.get("status") == "ok"
+        # 验证 dispatch 成功
+        dispatched = proj.get("dispatched", [])
+        assert tid in dispatched, f"Task {tid} not dispatched, dispatched={dispatched}"
 
-        # 等待 Agent 完成（最多 120 秒）
+        # 验证 DB 状态变为 claimed
         db_path = self.data_root / self.pid / "blackboard.db"
         bb = Blackboard(db_path)
-        for _ in range(24):
-            time.sleep(5)
-            t = bb.get_task(tid)
-            if t and t.status in ("done", "failed", "review"):
-                break
-
         t = bb.get_task(tid)
-        assert t is not None
-        # Agent 可能完成也可能超时，只要不是 pending 就算调度成功
-        assert t.status != "pending", f"Agent 未被调度，状态仍为 pending"
+        assert t.status == "claimed", f"Task should be claimed, got {t.status}"
 
     def test_e92_review_task_dispatch(self, client):
-        """review 任务 → 调度到 jiangwei-infra"""
+        """review 任务 → dispatch + spawn 成功（dry_run 模式）"""
         tid = _tid()
         resp = client.post(f"/api/projects/{self.pid}/tasks", json={
             "id": tid,
             "title": "E2E Review：检查代码",
-            "description": "请查看任务描述并回复你的评审意见。这是E2E测试，简单回复即可。",
+            "description": "请查看任务描述并回复你的评审意见。",
             "status": "pending",
             "assignee": "jiangwei-infra",
             "task_type": "review",
@@ -787,17 +793,14 @@ class TestE9RealAgentDispatch:
         ticker = self._make_ticker()
         result = asyncio.run(ticker.tick())
 
+        proj = result.get("projects", {}).get(self.pid, {})
+        dispatched = proj.get("dispatched", [])
+        assert tid in dispatched, f"Review task {tid} not dispatched, dispatched={dispatched}"
+
         db_path = self.data_root / self.pid / "blackboard.db"
         bb = Blackboard(db_path)
-        for _ in range(24):
-            time.sleep(5)
-            t = bb.get_task(tid)
-            if t and t.status in ("done", "failed", "review", "working", "claimed"):
-                break
-
         t = bb.get_task(tid)
-        assert t is not None
-        assert t.status != "pending", f"Review Agent 未被调度，状态仍为 pending"
+        assert t.status == "claimed", f"Task should be claimed, got {t.status}"
 
 
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