feat: 增强差旅报销审核流程与票据智能推理

优化本体解析和编排器的差旅场景处理能力，完善报销单草稿
保存和费用明细同步逻辑，前端报销创建页面增加行程推理和
票据审核交互，新增助手会话快照工具函数，补充单元测试。

server/tests/test_ontology_service.py

@@ -414,11 +414,11 @@ def test_semantic_ontology_service_uses_client_local_date_for_relative_time() ->
         assert result.time_range.end_date == "2026-05-12"
 
 
-def test_semantic_ontology_service_extracts_day_before_yesterday_from_client_local_date() -> None:
-    session_factory = build_session_factory()
-    with session_factory() as db:
-        result = SemanticOntologyService(db).parse(
-            OntologyParseRequest(
+def test_semantic_ontology_service_extracts_day_before_yesterday_from_client_local_date() -> None:
+    session_factory = build_session_factory()
+    with session_factory() as db:
+        result = SemanticOntologyService(db).parse(
+            OntologyParseRequest(
                 query="我前天请客户吃饭花了200元",
                 user_id="pytest",
                 context_json={
@@ -427,12 +427,77 @@ def test_semantic_ontology_service_extracts_day_before_yesterday_from_client_loc
                 },
             )
         )
-
-        assert result.time_range.raw == "前天"
-        assert result.time_range.start_date == "2026-05-11"
-        assert result.time_range.end_date == "2026-05-11"
-
-
+
+        assert result.time_range.raw == "前天"
+        assert result.time_range.start_date == "2026-05-11"
+        assert result.time_range.end_date == "2026-05-11"
+
+
+def test_semantic_ontology_service_treats_status_document_text_as_query() -> None:
+    session_factory = build_session_factory()
+    with session_factory() as db:
+        result = SemanticOntologyService(db).parse(
+            OntologyParseRequest(
+                query="查询草稿的单据",
+                user_id="pytest",
+            )
+        )
+
+        assert result.scenario == "expense"
+        assert result.intent == "query"
+        assert result.permission.level == "read"
+        assert any(
+            item.field == "status" and item.value == "draft"
+            for item in result.constraints
+        )
+
+
+def test_semantic_ontology_service_extracts_history_query_time_and_location() -> None:
+    session_factory = build_session_factory()
+    with session_factory() as db:
+        result = SemanticOntologyService(db).parse(
+            OntologyParseRequest(
+                query="我去年去北京报销的单据",
+                user_id="pytest",
+                context_json={
+                    "client_now_iso": "2026-05-21T04:00:00.000Z",
+                    "client_timezone_offset_minutes": -480,
+                },
+            )
+        )
+
+        assert result.scenario == "expense"
+        assert result.intent == "query"
+        assert result.time_range.raw == "去年"
+        assert result.time_range.start_date == "2025-01-01"
+        assert result.time_range.end_date == "2025-12-31"
+        assert any(
+            item.type == "location" and item.normalized_value == "北京"
+            for item in result.entities
+        )
+
+
+def test_semantic_ontology_service_understands_last_week_claim_progress_query() -> None:
+    session_factory = build_session_factory()
+    with session_factory() as db:
+        result = SemanticOntologyService(db).parse(
+            OntologyParseRequest(
+                query="我上周提交的单据报销了么？",
+                user_id="pytest",
+                context_json={
+                    "client_now_iso": "2026-05-21T04:00:00.000Z",
+                    "client_timezone_offset_minutes": -480,
+                },
+            )
+        )
+
+        assert result.scenario == "expense"
+        assert result.intent == "query"
+        assert result.time_range.raw == "上周"
+        assert result.time_range.start_date == "2026-05-11"
+        assert result.time_range.end_date == "2026-05-17"
+
+
 def test_semantic_ontology_service_maps_office_supplies_to_office_expense_type() -> None:
     session_factory = build_session_factory()
     with session_factory() as db: