feat(server): 更新用户代理服务，新增编排器服务测试用例，完善服务编排能力

server/tests/test_orchestrator_service.py

@@ -634,13 +634,18 @@ def test_orchestrator_expense_next_step_submits_claim_to_approval() -> None:
     user_id = "zhangsan@example.com"
 
     with session_factory() as db:
-        db.add(
-            Employee(
-                employee_no="E3001",
-                name="张三",
-                email=user_id,
-            )
+        manager = Employee(
+            employee_no="E3000",
+            name="李经理",
+            email="manager@example.com",
         )
+        employee = Employee(
+            employee_no="E3001",
+            name="张三",
+            email=user_id,
+            manager=manager,
+        )
+        db.add_all([manager, employee])
         db.commit()
 
     response = client.post(
@@ -673,8 +678,8 @@ def test_orchestrator_expense_next_step_submits_claim_to_approval() -> None:
     assert payload["status"] == "succeeded"
     assert payload["result"]["draft_payload"]["claim_no"].startswith("EXP-")
     assert payload["result"]["draft_payload"]["status"] == "submitted"
-    assert payload["result"]["draft_payload"]["approval_stage"] == "AI验审"
-    assert "已提交审批" in payload["result"]["answer"]
+    assert payload["result"]["draft_payload"]["approval_stage"] == "直属领导审批"
+    assert "已完成 AI验审" in payload["result"]["answer"]
 
     with session_factory() as db:
         claim = db.scalar(
@@ -684,7 +689,7 @@ def test_orchestrator_expense_next_step_submits_claim_to_approval() -> None:
         )
         assert claim is not None
         assert claim.status == "submitted"
-        assert claim.approval_stage == "AI验审"
+        assert claim.approval_stage == "直属领导审批"
         assert claim.submitted_at is not None