feat: 新增归档中心页面并完善知识库与报销查询能力

新增前端归档中心视图及相关工具函数，扩充知识库文档分类和
提取器支持多种格式，增强编排器报销查询的多维度检索，优
化本体规则和用户代理审核消息，前端完善报销创建和审批详
情交互细节，补充单元测试覆盖。

web/src/views/scripts/travelReimbursementExpenseQueryModel.js

@@ -4,6 +4,7 @@ import {
 } from './travelReimbursementReviewModel.js'
 
 export const EXPENSE_QUERY_PAGE_SIZE = 5
+export const EXPENSE_CENTER_HREF = '/app/requests'
 export const ASSOCIATABLE_CLAIM_STATUSES = new Set(['draft', 'supplement', 'returned'])
 const EXPENSE_STATUS_LABELS = {
   draft: '草稿',
@@ -14,6 +15,36 @@ const EXPENSE_STATUS_LABELS = {
   approved: '已审核',
   paid: '已入账'
 }
+const EXPENSE_RISK_LEVEL_LABELS = {
+  high: '高风险',
+  medium: '中风险',
+  warning: '中风险',
+  low: '低风险',
+  info: '低风险'
+}
+
+export function normalizeExpenseQueryRiskItem(item, index = 0) {
+  if (!item || typeof item !== 'object') {
+    return null
+  }
+
+  const rawLevel = String(item.level || item.severity || '').trim().toLowerCase()
+  const level = EXPENSE_RISK_LEVEL_LABELS[rawLevel] ? rawLevel : 'medium'
+  const summary = String(item.summary || item.message || item.content || '').trim()
+  const detail = String(item.detail || item.description || summary).trim()
+  if (!summary && !detail) {
+    return null
+  }
+
+  return {
+    key: String(item.key || `${level}-${index}`).trim() || `${level}-${index}`,
+    level,
+    levelLabel: String(item.level_label || item.levelLabel || EXPENSE_RISK_LEVEL_LABELS[level]).trim() || EXPENSE_RISK_LEVEL_LABELS[level],
+    title: String(item.title || item.label || EXPENSE_RISK_LEVEL_LABELS[level]).trim() || EXPENSE_RISK_LEVEL_LABELS[level],
+    summary: summary || detail,
+    detail: detail || summary
+  }
+}
 
 export function normalizeExpenseQueryStatusGroup(item) {
   if (!item || typeof item !== 'object') {
@@ -57,6 +88,9 @@ export function normalizeExpenseQueryRecord(item) {
     occurredAt,
     reason,
     location: String(item.location || '').trim(),
+    riskItems: (Array.isArray(item.risk_flags) ? item.risk_flags : [])
+      .map((riskItem, index) => normalizeExpenseQueryRiskItem(riskItem, index))
+      .filter(Boolean),
     summary: reason || `${expenseTypeLabel}报销`,
     dateDisplay: documentDate || occurredAt || '待补充日期'
   }
@@ -164,6 +198,7 @@ export function normalizeExpenseQueryPayload(payload) {
 
   const rawRecordCount = Number(payload.record_count || 0)
   const rawPreviewCount = Number(payload.preview_count || records.length)
+  const rawPreviewLimit = Number(payload.preview_limit || EXPENSE_QUERY_PAGE_SIZE)
   const rawOlderRecordCount = Number(payload.older_record_count || 0)
   const totalAmount = Number(payload.total_amount || 0)
   const rawWindowDays = Number(payload.window_days || 0)
@@ -187,6 +222,7 @@ export function normalizeExpenseQueryPayload(payload) {
     windowEndDate: windowEndDate || '',
     recordCount: Number.isFinite(rawRecordCount) ? Math.max(0, rawRecordCount) : 0,
     previewCount: Number.isFinite(rawPreviewCount) ? Math.max(0, rawPreviewCount) : records.length,
+    previewLimit: Number.isFinite(rawPreviewLimit) ? Math.max(1, rawPreviewLimit) : EXPENSE_QUERY_PAGE_SIZE,
     olderRecordCount: Number.isFinite(rawOlderRecordCount) ? Math.max(0, rawOlderRecordCount) : 0,
     hasMoreInWindow: Boolean(payload.has_more_in_window || payload.has_more),
     totalAmount: Number.isFinite(totalAmount) ? totalAmount : 0,
@@ -250,18 +286,13 @@ export function buildExpenseQueryHint(queryPayload) {
   }
 
   const parts = []
-  const windowText = buildExpenseQueryWindowLabel(queryPayload)
+  const previewLimit = Math.max(1, Number(queryPayload.previewLimit || EXPENSE_QUERY_PAGE_SIZE))
+  const totalCount = Math.max(0, Number(queryPayload.recordCount || 0))
 
-  if (Array.isArray(queryPayload.records) && queryPayload.records.length > EXPENSE_QUERY_PAGE_SIZE) {
-    parts.push(`当前共整理 ${queryPayload.records.length} 笔单据，可左右切换查看`)
-  }
-
-  if (queryPayload.hasMoreInWindow && queryPayload.previewCount < queryPayload.recordCount) {
-    parts.push(`${windowText}共 ${queryPayload.recordCount} 笔，当前先整理最近 ${queryPayload.previewCount} 笔`)
-  }
-
-  if (queryPayload.olderRecordCount > 0 && queryPayload.windowDays) {
-    parts.push(`另有 ${queryPayload.olderRecordCount} 笔超过 ${queryPayload.windowDays} 日的单据，请前往个人报销中心查看`)
+  if (totalCount > previewLimit) {
+    parts.push(`我只会筛选出最近的 ${previewLimit} 条记录；如果想查询全部的单据，请点击 [**这里**](${EXPENSE_CENTER_HREF}) 跳转到报销中心查看。`)
+  } else if (totalCount > 0) {
+    parts.push(`当前已展示本次筛选命中的全部记录；如果想进入报销中心继续筛选，请点击 [**这里**](${EXPENSE_CENTER_HREF})。`)
   }
 
   return parts.join('。')