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。

web/src/components/layout/SidebarRail.vue

@@ -2,7 +2,8 @@
   <aside class="rail" aria-label="主导航">
     <div class="rail-brand">
       <div class="brand-mark" aria-hidden="true">
-        <svg viewBox="0 0 36 36">
+        <img v-if="companyLogo" :src="companyLogo" alt="System Logo" class="custom-logo" />
+        <svg v-else viewBox="0 0 36 36">
           <path d="M19.8 4.5c5.7 1.1 9.9 5.7 10.5 11.6-2.8-.9-5.5-.7-7.9.6-2.8 1.5-4.5 4.3-5.2 8.2-4.4-2.8-6.5-6.5-6.3-11.1.2-4.2 3.5-7.8 8.9-9.3Z" />
           <path d="M9 7.6c-3 3.5-4 7.3-2.9 11.2 1.2 4.2 4.6 7 10.1 8.5-2 1.8-4.6 2.6-7.6 2.3C5.1 26.7 3.5 23.1 3.7 19 4 14.4 5.7 10.6 9 7.6Z" />
         </svg>
@@ -57,6 +58,10 @@ const props = defineProps({
     type: String,
     default: ''
   },
+  companyLogo: {
+    type: String,
+    default: ''
+  },
   currentUser: {
     type: Object,
     default: () => ({
@@ -145,6 +150,14 @@ const displayCompanyName = computed(() => props.companyName || 'X-Financial')
   display: grid;
   place-items: center;
   color: #07936f;
+  border-radius: 6px;
+  overflow: hidden;
+}
+
+.custom-logo {
+  width: 100%;
+  height: 100%;
+  object-fit: contain;
 }
 
 .brand-mark svg {
@@ -195,10 +208,9 @@ const displayCompanyName = computed(() => props.companyName || 'X-Financial')
 }
 
 .nav-btn.active {
-  background: linear-gradient(90deg, rgba(16, 185, 129, 0.16), rgba(16, 185, 129, 0.08));
-  border-color: rgba(16, 185, 129, 0.1);
+  background: #ecfdf5;
+  border-color: rgba(16, 185, 129, 0.12);
   color: #059669;
-  box-shadow: inset 3px 0 0 #10b981;
 }
 
 .nav-icon {
@@ -224,7 +236,7 @@ const displayCompanyName = computed(() => props.companyName || 'X-Financial')
   min-width: 0;
   color: currentColor;
   font-size: 14px;
-  font-weight: 750;
+  font-weight: 700;
   line-height: 1.2;
   white-space: nowrap;
   overflow: hidden;