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/tests/travel-reimbursement-composer-tools.test.mjs

@@ -0,0 +1,40 @@
+import assert from 'node:assert/strict'
+import { readFileSync } from 'node:fs'
+import test from 'node:test'
+import { fileURLToPath } from 'node:url'
+
+import {
+  buildStructuredComposerSubmitText
+} from '../src/views/scripts/useTravelReimbursementComposerTools.js'
+
+const submitComposerScript = readFileSync(
+  fileURLToPath(new URL('../src/views/scripts/useTravelReimbursementSubmitComposer.js', import.meta.url)),
+  'utf8'
+)
+
+test('composer formats date-picker expense text into readable structured fields', () => {
+  const formatted = buildStructuredComposerSubmitText(
+    '发生时间：2026-05-20 至 2026-05-23，去上海支撑上海国电的服务器部署，出差3天',
+    {
+      mode: 'range',
+      start_date: '2026-05-20',
+      end_date: '2026-05-23',
+      business_time: '2026-05-20 至 2026-05-23'
+    }
+  )
+
+  assert.equal(
+    formatted,
+    [
+      '发生时间：2026-05-20 至 2026-05-23',
+      '地点：上海',
+      '事由：支撑上海国电的服务器部署',
+      '天数：3天'
+    ].join('\n')
+  )
+})
+
+test('composer keeps backend raw text but displays structured user message', () => {
+  assert.match(submitComposerScript, /const rawText = resolveComposerSubmitText\(options\.rawText\)\.trim\(\)/)
+  assert.match(submitComposerScript, /resolveComposerDisplaySubmitText\(rawText\)/)
+})