fix(workbench): serialize events and target work order sync

tests/unit/test_peripheral_task_sync.py

@@ -240,6 +240,7 @@ async def test_sample_sync_rejects_cross_project_data_before_writing():
 
 
 @pytest.mark.anyio
+@pytest.mark.parametrize("targeted", [False, True])
 @pytest.mark.parametrize(
     ("investigation_status", "expected_feedback_count", "routes_to_investigation"),
     [
@@ -252,19 +253,24 @@ async def test_created_work_order_receipt_preserves_projection_and_routes_active
     investigation_status,
     expected_feedback_count,
     routes_to_investigation,
+    targeted,
 ):
     project_id, order_id, investigation_id, projection_id = map(str, (uuid4(), uuid4(), uuid4(), uuid4()))
     received = []
     def handler(request):
         if request.url.host == "sample.test":
-            return httpx.Response(200, json={"items": [{
+            order = {
                 "project_id": project_id, "work_order_id": order_id, "origin": "synthetic",
                 "created_by": str(uuid4()),
                 "revision": 2, "summary": "采样已完成", "status": "completed", "updated_at": "2026-09-23T09:00:00Z",
                 "title": "合成采样工单", "priority": "normal",
                 "work_order_type": "general", "created_at": "2026-09-23T08:00:00Z",
                 "scheduled_at": None,
-            }], "next_cursor": None})
+            }
+            if targeted:
+                assert request.url.path.endswith(f"/work-orders/{order_id}")
+                return httpx.Response(200, json=order)
+            return httpx.Response(200, json={"items": [order], "next_cursor": None})
         if request.method == "POST":
             assert request.url.path.endswith("external-feedback"), "Linked child orders must not start another investigation"
             received.append(request.url.path)
@@ -276,6 +282,8 @@ async def test_created_work_order_receipt_preserves_projection_and_routes_active
             return httpx.Response(200, json={"actions": [{"kind": "create_work_order", "receipt": {
                 "adapter": "peripheral_sample", "receipt_id": order_id,
             }}]})
+        if targeted:
+            assert request.url.params["peripheral_work_order_id"] == order_id
         return httpx.Response(200, json={"items": [
             {"task_id": investigation_id, "task_type": "event_investigation", "status": investigation_status},
             {"task_id": projection_id, "task_type": "external_work_order", "source": {
@@ -285,7 +293,8 @@ async def test_created_work_order_receipt_preserves_projection_and_routes_active
     settings = WorkerSettings("http://server.test", "http://agent.test", project_id, bearer="TEST_ONLY")
     async with httpx.AsyncClient(transport=httpx.MockTransport(handler)) as client:
         assert await sync_once(
-            client, settings, "http://sample.test", CredentialProvider(settings)
+            client, settings, "http://sample.test", CredentialProvider(settings),
+            **({"work_order_ids": {order_id}} if targeted else {}),
         ) == expected_feedback_count
     assert any(investigation_id in path for path in received) is routes_to_investigation
     assert any(projection_id in path for path in received)