feat: 完善文档中心与报销申请交互及侧边栏重构

后端优化编排器报销查询和本体检测精度，增强报销单草稿保
存和附件回填逻辑，前端重构侧边栏组件支持折叠和图标导
航，完善文档中心状态筛选和详情提示，报销创建和审批详情
页优化会话管理和费用明细交互，新增助手应用服务和预设动
作工具函数，补充单元测试覆盖。

web/tests/expense-application-ontology.test.mjs

@@ -0,0 +1,69 @@
+import assert from 'node:assert/strict'
+import test from 'node:test'
+
+import {
+  buildApplicationFieldsFromOntology,
+  expandApplicationTimeWithDays,
+  resolveApplicationReason,
+  resolveApplicationTimeRange,
+  resolvePromptField
+} from '../src/utils/expenseApplicationOntology.js'
+
+const structuredApplicationPrompt = [
+  '发生时间：2026-05-25',
+  '地点：上海',
+  '事由：支撑国网服务器部署',
+  '天数：3天'
+].join('\n')
+
+test('expense application fields use labeled reason and filter resolved missing slots', () => {
+  const fields = buildApplicationFieldsFromOntology(
+    {
+      scenario: 'expense',
+      intent: 'draft',
+      entities: [],
+      time_range: {},
+      missing_slots: ['time_range', 'location', 'reason', 'amount']
+    },
+    structuredApplicationPrompt,
+    { name: '申请员工', departmentName: '交付部' }
+  )
+
+  assert.equal(fields.timeRange, '2026-05-25 至 2026-05-28')
+  assert.equal(fields.location, '上海')
+  assert.equal(fields.reason, '支撑国网服务器部署')
+  assert.deepEqual(
+    fields.missingSlots.map((item) => item.key),
+    ['amount']
+  )
+})
+
+test('expense application prompt field parser supports multiline labels', () => {
+  assert.equal(resolvePromptField(structuredApplicationPrompt, ['事由']), '支撑国网服务器部署')
+  assert.equal(resolveApplicationReason(structuredApplicationPrompt), '支撑国网服务器部署')
+})
+
+test('expense application expands a single selected date with natural days', () => {
+  const prompt = [
+    '发生时间：2026-05-25',
+    '去上海出差3天，支撑国网服务器部署'
+  ].join('\n')
+
+  assert.equal(expandApplicationTimeWithDays('2026-05-25', 3), '2026-05-25 至 2026-05-28')
+  assert.equal(resolveApplicationTimeRange({ time_range: {} }, prompt), '2026-05-25 至 2026-05-28')
+})
+
+test('expense application keeps explicit time range before applying days', () => {
+  assert.equal(
+    resolveApplicationTimeRange(
+      {
+        time_range: {
+          start_date: '2026-05-25',
+          end_date: '2026-05-27'
+        }
+      },
+      '去上海出差3天，支撑国网服务器部署'
+    ),
+    '2026-05-25 至 2026-05-27'
+  )
+})