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/tests/test_knowledge_rag_service.py

@@ -8,8 +8,10 @@ from app.services.knowledge_ingest_log import (
     build_document_graph_summary,
     build_ingest_document_summary,
     build_ingest_status_summary,
+    enrich_knowledge_ingest_route_json,
 )
 from app.services.knowledge_rag import KnowledgeRagService
+from app.services.knowledge_rag_local import query_local_text_chunks
 
 
 def test_build_hits_prioritizes_structured_table_evidence_for_standard_queries() -> None:
@@ -82,6 +84,84 @@ def test_build_hits_prioritizes_answer_clue_appendix_for_rule_queries() -> None:
     assert [item["candidate_id"] for item in hits] == ["clue-1", "plain-1"]
 
 
+def test_query_local_text_chunks_prioritizes_relevant_policy_chunk(tmp_path) -> None:
+    workspace = tmp_path / "knowledge" / ".lightrag" / "x_financial_knowledge"
+    workspace.mkdir(parents=True)
+    (workspace / "kv_store_text_chunks.json").write_text(
+        json.dumps(
+            {
+                "chunk-travel": {
+                    "_id": "chunk-travel",
+                    "full_doc_id": "doc-1",
+                    "chunk_order_index": 1,
+                    "file_path": "/tmp/doc-1__差旅费管理办法.pdf",
+                    "content": (
+                        "第十三条 差旅费。酒店住宿限额标准如下：其他员工直辖市350元、"
+                        "省会城市300元、其他地区250元。确因紧急公务、特别情形等事项"
+                        "导致住宿超过规定标准时，超标20%以内由部门负责人审批，"
+                        "超标20%以上需分管领导审批。"
+                    ),
+                },
+                "chunk-office": {
+                    "_id": "chunk-office",
+                    "full_doc_id": "doc-2",
+                    "chunk_order_index": 1,
+                    "file_path": "/tmp/doc-2__办公用品管理办法.pdf",
+                    "content": "办公用品采购应遵循预算和验收流程。",
+                },
+            }
+        ),
+        encoding="utf-8",
+    )
+
+    result = query_local_text_chunks(
+        lightrag_root=tmp_path / "knowledge" / ".lightrag",
+        workspace="x_financial_knowledge",
+        query="住宿费超过标准审批依据是什么？",
+        limit=2,
+    )
+
+    assert result.confident is True
+    assert result.hits[0]["candidate_id"] == "chunk-travel"
+    assert "住宿超过规定标准" in result.hits[0]["content"]
+
+
+def test_query_knowledge_uses_local_chunks_before_lightrag_runtime(tmp_path, monkeypatch) -> None:
+    workspace = tmp_path / "knowledge" / ".lightrag" / "x_financial_knowledge"
+    workspace.mkdir(parents=True)
+    (workspace / "kv_store_text_chunks.json").write_text(
+        json.dumps(
+            {
+                "chunk-1": {
+                    "_id": "chunk-1",
+                    "full_doc_id": "doc-1",
+                    "chunk_order_index": 1,
+                    "file_path": "/tmp/doc-1__公司支出管理办法.pdf",
+                    "content": (
+                        "第八条 支出报销申请时限。公司各类支出报销结算申请时限为三个月。"
+                        "逾期需说明原因，经分管领导审批后方可报销。"
+                    ),
+                }
+            }
+        ),
+        encoding="utf-8",
+    )
+
+    def fail_if_runtime_is_used(_self):
+        raise AssertionError("local high-confidence queries should not initialize LightRAG")
+
+    monkeypatch.setattr(KnowledgeRagService, "_get_runtime", fail_if_runtime_is_used)
+
+    payload = KnowledgeRagService(storage_root=tmp_path).query_knowledge(
+        "费用发生后多久内必须报销？超过三个月还能不能报？",
+        limit=3,
+    )
+
+    assert payload["record_count"] == 1
+    assert payload["metadata"]["retrieval_strategy"] == "local_text_chunks"
+    assert "三个月" in payload["hits"][0]["content"]
+
+
 def test_build_hits_demotes_chapter_navigation_for_specific_rule_queries() -> None:
     hits = KnowledgeRagService._build_hits_from_query_data(
         query="探亲差旅归哪个部门管理？",
@@ -227,6 +307,46 @@ def test_build_document_graph_summary_reads_lightrag_storage(tmp_path) -> None:
         ),
         encoding="utf-8",
     )
+    (workspace / "kv_store_entity_chunks.json").write_text(
+        json.dumps(
+            {
+                "远光软件": {"chunk_ids": ["chunk-1", "chunk-missing"]},
+                "支出管理": {"chunk_ids": ["chunk-2"]},
+            }
+        ),
+        encoding="utf-8",
+    )
+    (workspace / "graph_chunk_entity_relation.graphml").write_text(
+        """<?xml version="1.0" encoding="UTF-8"?>
+<graphml xmlns="http://graphml.graphdrawing.org/xmlns">
+  <key id="n0" for="node" attr.name="entity_id" attr.type="string" />
+  <key id="n1" for="node" attr.name="entity_type" attr.type="string" />
+  <key id="n2" for="node" attr.name="description" attr.type="string" />
+  <key id="n3" for="node" attr.name="created_at" attr.type="string" />
+  <key id="e0" for="edge" attr.name="weight" attr.type="double" />
+  <key id="e1" for="edge" attr.name="description" attr.type="string" />
+  <key id="e2" for="edge" attr.name="keywords" attr.type="string" />
+  <graph edgedefault="undirected">
+    <node id="远光软件">
+      <data key="n0">远光软件</data>
+      <data key="n1">ORGANIZATION</data>
+      <data key="n2">公司主体&lt;SEP&gt;费用制度适用公司</data>
+      <data key="n3">2026-05-23</data>
+    </node>
+    <node id="支出管理">
+      <data key="n0">支出管理</data>
+      <data key="n1">TOPIC</data>
+      <data key="n2">规范费用支出、预算和审批。</data>
+    </node>
+    <edge source="远光软件" target="支出管理">
+      <data key="e0">2.5</data>
+      <data key="e1">远光软件通过支出管理制度约束费用审批。</data>
+      <data key="e2">制度&lt;SEP&gt;审批</data>
+    </edge>
+  </graph>
+</graphml>""",
+        encoding="utf-8",
+    )
 
     summary = build_document_graph_summary(
         tmp_path,
@@ -235,10 +355,39 @@ def test_build_document_graph_summary_reads_lightrag_storage(tmp_path) -> None:
     )
 
     assert summary["entity_count"] == 2
-    assert summary["entities"] == ["远光软件", "支出管理"]
+    assert [item["name"] for item in summary["entities"]] == ["远光软件", "支出管理"]
+    assert summary["entities"][0]["type"] == "ORGANIZATION"
+    assert summary["entities"][0]["descriptions"][0] == "公司主体"
     assert summary["relation_count"] == 1
-    assert summary["relations"] == [{"source": "远光软件", "target": "支出管理", "type": "关联"}]
+    assert summary["relations"][0]["source"] == "远光软件"
+    assert summary["relations"][0]["target"] == "支出管理"
+    assert summary["relations"][0]["description"] == "远光软件通过支出管理制度约束费用审批。"
+    assert summary["relations"][0]["keywords"] == ["制度", "审批"]
+    assert summary["relations"][0]["weight"] == 2.5
     assert [item["id"] for item in summary["chunks"]] == ["chunk-1", "chunk-2"]
+    assert summary["chunks"][0]["excerpt"].startswith("第一条")
+    assert summary["entity_chunks"] == [
+        {"entity": "远光软件", "chunk_ids": ["chunk-1"]},
+        {"entity": "支出管理", "chunk_ids": ["chunk-2"]},
+    ]
+
+    enriched_route = enrich_knowledge_ingest_route_json(
+        {
+            "lightrag_workspace": "test_workspace",
+            "knowledge_ingest": {
+                "graph": {
+                    "entities": ["远光软件"],
+                    "relations": [
+                        {"source": "远光软件", "target": "支出管理", "type": "关联"}
+                    ],
+                }
+            },
+        },
+        storage_root=tmp_path,
+    )
+    enriched_entities = enriched_route["knowledge_ingest"]["graph"]["entities"]
+    assert [item["name"] for item in enriched_entities] == ["远光软件", "支出管理"]
+    assert enriched_entities[1]["type"] == "TOPIC"
 
 
 def test_build_ingest_document_summary_extracts_sections() -> None: