feat: 重构报销单AI预审流程并添加平台风险规则引擎

- 将AI验审改为AI预审，高风险不再拦截而是随单流转给审批人复核
- 新增平台风险规则评估引擎，支持事由过短、票据异常、重复发票等多种评估器
- 用户上下文增加部门信息(department_name)，认证流程同步关联组织架构
- 规则scenario_json改为中文标签(差旅/费用科目)，统一场景分类
- 新增orchestrator审核流程测试用例
- 前端更新审计视图、差旅报销等相关页面

server/tests/test_ontology_service.py

@@ -310,7 +310,9 @@ def test_semantic_ontology_service_keeps_travel_amount_follow_up_in_knowledge_qu
         assert result.clarification_required is False
 
 
-def test_semantic_ontology_service_rejects_draft_intent_inside_knowledge_session(monkeypatch) -> None:
+def test_semantic_ontology_service_rejects_draft_intent_inside_knowledge_session(
+    monkeypatch,
+) -> None:
     session_factory = build_session_factory()
     with session_factory() as db:
         service = SemanticOntologyService(db)
@@ -341,11 +343,33 @@ def test_semantic_ontology_service_rejects_draft_intent_inside_knowledge_session
                 },
             )
         )
-
-        assert result.scenario == "knowledge"
-        assert result.intent == "query"
-        assert result.clarification_required is False
-        assert result.clarification_question is None
+
+        assert result.scenario == "knowledge"
+        assert result.intent == "query"
+        assert result.clarification_required is False
+        assert result.clarification_question is None
+
+
+def test_review_next_step_context_inherits_expense_draft_flow() -> None:
+    session_factory = build_session_factory()
+    with session_factory() as db:
+        result = SemanticOntologyService(db).parse(
+            OntologyParseRequest(
+                query="我已核对右侧识别结果，请进入下一步。",
+                user_id="pytest",
+                context_json={
+                    "review_action": "next_step",
+                    "draft_claim_id": "claim-1",
+                    "attachment_count": 1,
+                },
+            )
+        )
+
+        assert result.scenario == "expense"
+        assert result.intent == "draft"
+        assert result.permission.level == "draft_write"
+        assert result.clarification_required is False
+        assert result.clarification_question is None
 
 
 def test_semantic_ontology_service_prefers_expense_for_customer_entertainment_narrative() -> None: