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/views/scripts/useTravelReimbursementSessionState.js

@@ -6,7 +6,10 @@ import {
   readAssistantSessionSnapshot,
   writeAssistantSessionSnapshot
 } from '../../utils/assistantSessionSnapshot.js'
-import { buildReviewFilePreviewsFromMessages } from './travelReimbursementAttachmentModel.js'
+import {
+  buildReviewFilePreviewsFromMessages,
+  filterPersistableFilePreviews
+} from './travelReimbursementAttachmentModel.js'
 import {
   SESSION_TYPE_EXPENSE,
   SESSION_TYPE_KNOWLEDGE,
@@ -106,7 +109,7 @@ export function useTravelReimbursementSessionState({
       currentInsight:
         state.currentInsight
         || buildWelcomeInsight(props.entrySource, linkedRequest.value, sessionType, currentUser.value),
-      reviewFilePreviews: Array.isArray(state.reviewFilePreviews) ? state.reviewFilePreviews : [],
+      reviewFilePreviews: filterPersistableFilePreviews(state.reviewFilePreviews),
       composerDraft: String(state.composerDraft || ''),
       attachedFiles: [],
       composerFilesExpanded: false,
@@ -164,7 +167,7 @@ export function useTravelReimbursementSessionState({
       conversationId: String(state.conversationId || '').trim(),
       draftClaimId: String(state.draftClaimId || '').trim(),
       currentInsight: state.currentInsight || null,
-      reviewFilePreviews: Array.isArray(state.reviewFilePreviews) ? state.reviewFilePreviews : [],
+      reviewFilePreviews: filterPersistableFilePreviews(state.reviewFilePreviews),
       composerDraft: String(state.composerDraft || ''),
       composerUploadIntent: String(state.composerUploadIntent || '').trim(),
       insightPanelCollapsed: Boolean(state.insightPanelCollapsed)