feat: 增强规则资产管理与审计页面运行时调试

后端新增规则资产版本管理和规则文件 CRUD 接口，优化风险
规则生成模板执行和员工数据模型字段，知识库 RAG 增强本
地回退和文档提取能力，清理旧风险规则文件统一由生成引擎
管理，前端审计页面增加运行时调试面板和规则资产编辑交互，
补充单元测试覆盖。

fix_knowledge.py

@@ -0,0 +1,45 @@
+import re
+
+file_path = 'server/src/app/services/user_agent_knowledge.py'
+with open(file_path, 'r', encoding='utf-8') as f:
+    content = f.read()
+
+content = re.sub(
+    r'(def _build_fast_knowledge_answer\([\s\S]*?-> str \| None:\n)',
+    r'\1        return None\n',
+    content
+)
+
+content = re.sub(
+    r'heading_text = f" > \{heading\}" if heading else ""',
+    r'if "表格行级检索线索" in heading:\n                heading = heading.replace("表格行级检索线索", "").strip(" >")\n            heading_text = f"（{heading}）" if heading else ""\n            item_title = item.get("title") or title',
+    content
+)
+
+content = re.sub(
+    r'evidence_lines\.append\(f"- 《\{item\.get\(\'title\'\) or title\}》\{heading_text\}：\{summary\}\\n\{preview\}"\)',
+    r'evidence_lines.append(f"- **《{item_title}》** {heading_text}\\n  {summary}\\n{preview}")',
+    content
+)
+
+content = re.sub(
+    r'evidence_lines\.append\(f"- 《\{item\.get\(\'title\'\) or title\}》\{heading_text\}：\\n\{rendered\}"\)',
+    r'evidence_lines.append(f"- **《{item_title}》** {heading_text}\\n{rendered}")',
+    content
+)
+
+content = re.sub(
+    r'evidence_lines\.append\(f"- 《\{item\.get\(\'title\'\) or title\}》\{heading_text\}：\{rendered\}"\)',
+    r'evidence_lines.append(f"- **《{item_title}》** {heading_text}\\n  {rendered}")',
+    content
+)
+
+content = re.sub(
+    r'evidence_lines\.append\(f"- 《\{item_title\}》：\{excerpt\}"\)',
+    r'evidence_lines.append(f"- **《{item_title}》**：{excerpt}")',
+    content
+)
+
+with open(file_path, 'w', encoding='utf-8') as f:
+    f.write(content)
+print('Done.')