test(backend): update and add service tests

Updated tests:
- test_ontology_service.py: update ontology service tests

New tests:
- test_expense_claim_service.py: add expense claim service tests
- test_reimbursement_endpoints.py: add reimbursement endpoint tests

server/tests/test_ontology_service.py

@@ -333,6 +333,24 @@ def test_semantic_ontology_service_extracts_day_before_yesterday_from_client_loc
         assert result.time_range.end_date == "2026-05-11"
 
 
+def test_semantic_ontology_service_maps_office_supplies_to_office_expense_type() -> None:
+    session_factory = build_session_factory()
+    with session_factory() as db:
+        result = SemanticOntologyService(db).parse(
+            OntologyParseRequest(
+                query="我买了办公用品和文具，花了88元，帮我报销",
+                user_id="pytest",
+            )
+        )
+
+        assert result.scenario == "expense"
+        assert result.intent == "draft"
+        assert any(
+            item.type == "expense_type" and item.normalized_value == "office"
+            for item in result.entities
+        )
+
+
 def test_semantic_ontology_service_uses_model_parse_when_available(monkeypatch) -> None:
     session_factory = build_session_factory()
     with session_factory() as db: