feat: 增强知识库索引与设置页面模块化拆分

扩展知识库索引任务和 RAG 检索支持增量入库和文档去重，优
化本体检测和规则匹配精度，前端设置页面拆分为 LLM、邮件
和 Hermes 员工同步子面板并重构样式，新增日志详情组件和
知识入库日志模型，补充单元测试覆盖。

server/src/app/services/orchestrator_expense_query.py

@@ -74,16 +74,16 @@ EXPENSE_RISK_LEVEL_LABELS = {
     "medium": "中风险",
     "warning": "中风险",
     "low": "低风险",
-    "info": "低风险",
+    "info": "提示",
 }
 EXPENSE_TYPE_LABELS = {
     "travel": "差旅费",
     "hotel": "住宿费",
     "transport": "交通费",
-    "meal": "餐费",
+    "meal": "业务招待费",
     "meeting": "会务费",
     "entertainment": "业务招待费",
-    "office": "办公费",
+    "office": "办公用品费",
     "training": "培训费",
     "communication": "通讯费",
     "welfare": "福利费",