feat: 新增风险规则生成引擎与知识图谱可视化

后端新增风险规则自动生成和模板执行服务，支持从规则资产
批量生成并持久化风险规则文件；知识库入库日志增强图谱
查询和本地 RAG 回退，前端审计页面增加风险规则模型和流
程图组件，知识入库面板拆分为图谱可视化子组件，报销创
建页面增加引导式流程模型，更新知识库索引数据。

server/src/app/services/knowledge_index_tasks.py

@@ -480,6 +480,7 @@ def _build_initial_knowledge_ingest_document(
         "entity_count": 0,
         "relation_count": 0,
         "entities": [],
+        "entity_chunks": [],
         "relations": [],
         "events": [
             {
@@ -677,7 +678,7 @@ def _build_ingest_graph(knowledge_ingest: dict[str, Any]) -> dict[str, Any]:
     documents = [
         item for item in list(knowledge_ingest.get("documents") or []) if isinstance(item, dict)
     ]
-    entities = _dedupe_text_items(
+    entities = _dedupe_entities(
         entity for document in documents for entity in list(document.get("entities") or [])
     )
     relations = _dedupe_relations(
@@ -692,20 +693,52 @@ def _build_ingest_graph(knowledge_ingest: dict[str, Any]) -> dict[str, Any]:
     }
 
 
-def _dedupe_text_items(items: Any) -> list[str]:
-    deduped: list[str] = []
+def _dedupe_entities(items: Any) -> list[dict[str, Any]]:
+    deduped: list[dict[str, Any]] = []
     seen: set[str] = set()
     for item in items:
-        text = str(item or "").strip()
-        if not text or text in seen:
+        if isinstance(item, dict):
+            name = str(
+                item.get("name")
+                or item.get("entity")
+                or item.get("entity_id")
+                or item.get("title")
+                or item.get("id")
+                or ""
+            ).strip()
+            entity = dict(item)
+        else:
+            name = str(item or "").strip()
+            entity = {}
+        if not name or name in seen:
             continue
-        seen.add(text)
-        deduped.append(text)
+        seen.add(name)
+        entity["name"] = name
+        entity["type"] = str(
+            entity.get("type")
+            or entity.get("entity_type")
+            or entity.get("category")
+            or entity.get("kind")
+            or "实体"
+        ).strip()
+        description = str(entity.get("description") or "").strip()
+        descriptions = entity.get("descriptions")
+        if not isinstance(descriptions, list):
+            descriptions = [description] if description else []
+        entity["description"] = description
+        entity["descriptions"] = [
+            str(description_item or "").strip()
+            for description_item in descriptions
+            if str(description_item or "").strip()
+        ][:5]
+        if not isinstance(entity.get("properties"), dict):
+            entity["properties"] = {}
+        deduped.append(entity)
     return deduped
 
 
-def _dedupe_relations(items: Any) -> list[dict[str, str]]:
-    deduped: list[dict[str, str]] = []
+def _dedupe_relations(items: Any) -> list[dict[str, Any]]:
+    deduped: list[dict[str, Any]] = []
     seen: set[tuple[str, str, str]] = set()
     for item in items:
         if not isinstance(item, dict):
@@ -717,7 +750,7 @@ def _dedupe_relations(items: Any) -> list[dict[str, str]]:
         if not source or not target or key in seen:
             continue
         seen.add(key)
-        deduped.append({"source": source, "target": target, "type": relation_type})
+        deduped.append({**item, "source": source, "target": target, "type": relation_type})
     return deduped