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/src/app/services/ontology.py

@@ -120,11 +120,13 @@ EXPLAIN_KEYWORDS = ("为什么", "依据", "原因", "怎么处理", "是否可
 COMPARE_KEYWORDS = ("对比", "比较", "相比", "差异", "变化")
 RISK_KEYWORDS = ("风险", "异常", "重复", "超标", "超预算", "逾期", "验真", "巡检")
 DRAFT_KEYWORDS = ("生成", "草稿", "起草", "拟一份", "创建", "发起", "准备")
-DRAFT_FOLLOW_UP_KEYWORDS = (
-    "继续",
-    "补充",
-    "补一下",
-    "修改",
+DRAFT_FOLLOW_UP_KEYWORDS = (
+    "继续",
+    "下一步",
+    "核对",
+    "补充",
+    "补一下",
+    "修改",
     "改成",
     "改为",
     "换成",
@@ -136,9 +138,16 @@ DRAFT_FOLLOW_UP_KEYWORDS = (
     "地点是",
     "金额是",
     "日期是",
-    "时间是",
-)
-OPERATE_KEYWORDS = (
+    "时间是",
+)
+EXPENSE_REVIEW_ACTIONS = {
+    "save_draft",
+    "next_step",
+    "edit_review",
+    "link_to_existing_draft",
+    "create_new_claim_from_documents",
+}
+OPERATE_KEYWORDS = (
     "直接付款",
     "帮我付款",
     "安排付款",
@@ -636,12 +645,17 @@ class SemanticOntologyService:
     def _compact(text: str) -> str:
         return re.sub(r"\s+", "", text).lower()
 
-    @staticmethod
-    def _resolve_context_scenario(context_json: dict[str, Any]) -> str | None:
-        value = str(context_json.get("conversation_scenario") or "").strip()
-        if value in CONTEXTUAL_SCENARIOS:
-            return value
-        return None
+    @staticmethod
+    def _resolve_context_scenario(context_json: dict[str, Any]) -> str | None:
+        value = str(context_json.get("conversation_scenario") or "").strip()
+        if value in CONTEXTUAL_SCENARIOS:
+            return value
+        review_action = str(context_json.get("review_action") or "").strip()
+        if review_action in EXPENSE_REVIEW_ACTIONS:
+            return "expense"
+        if str(context_json.get("draft_claim_id") or "").strip():
+            return "expense"
+        return None
 
     @staticmethod
     def _resolve_session_type_scenario(context_json: dict[str, Any]) -> str | None:
@@ -728,19 +742,22 @@ class SemanticOntologyService:
         )
         return len(compact_query) <= 12 and not has_domain_keyword
 
-    def _should_inherit_expense_draft(
-        self,
-        compact_query: str,
+    def _should_inherit_expense_draft(
+        self,
+        compact_query: str,
         *,
         scenario: str,
         entities: list[OntologyEntity],
         time_range: OntologyTimeRange,
-        context_json: dict[str, Any],
-    ) -> bool:
-        context_scenario = self._resolve_context_scenario(context_json)
-        draft_claim_id = str(context_json.get("draft_claim_id") or "").strip()
-        if context_scenario != "expense" and not draft_claim_id:
-            return False
+        context_json: dict[str, Any],
+    ) -> bool:
+        context_scenario = self._resolve_context_scenario(context_json)
+        draft_claim_id = str(context_json.get("draft_claim_id") or "").strip()
+        review_action = str(context_json.get("review_action") or "").strip()
+        if review_action in EXPENSE_REVIEW_ACTIONS:
+            return True
+        if context_scenario != "expense" and not draft_claim_id:
+            return False
 
         if any(keyword in compact_query for keyword in DRAFT_FOLLOW_UP_KEYWORDS):
             return True
@@ -1674,15 +1691,16 @@ class SemanticOntologyService:
         return False, None
 
     @staticmethod
-    def _allow_incomplete_draft(
-        context_json: dict[str, Any],
-        *,
-        scenario: str,
-        intent: str,
+    def _allow_incomplete_draft(
+        context_json: dict[str, Any],
+        *,
+        scenario: str,
+        intent: str,
     ) -> bool:
-        if scenario != "expense" or intent != "draft":
-            return False
-        return str(context_json.get("review_action") or "").strip() == "save_draft"
+        if scenario != "expense" or intent != "draft":
+            return False
+        review_action = str(context_json.get("review_action") or "").strip()
+        return review_action in EXPENSE_REVIEW_ACTIONS
 
     @staticmethod
     def _display_slot_label(slot: str) -> str: