feat: 增强差旅报销审核流程与票据智能推理

优化本体解析和编排器的差旅场景处理能力，完善报销单草稿
保存和费用明细同步逻辑，前端报销创建页面增加行程推理和
票据审核交互，新增助手会话快照工具函数，补充单元测试。

web/tests/travel-request-detail-risk-advice.test.mjs

@@ -153,6 +153,10 @@ test('AI advice view model exposes grouped completion and risk sections', () =>
 })
 
 test('AI advice view model omits empty sections', () => {
+  const readyAdvice = buildAiAdviceViewModel({
+    completionItems: [],
+    riskCards: []
+  })
   const completionOnlyAdvice = buildAiAdviceViewModel({
     completionItems: ['补充业务地点'],
     riskCards: []
@@ -172,6 +176,8 @@ test('AI advice view model omits empty sections', () => {
     ]
   })
 
+  assert.deepEqual(readyAdvice.sections, [])
+  assert.equal(readyAdvice.badge, '可直接提交')
   assert.deepEqual(completionOnlyAdvice.sections.map((section) => section.title), ['建议补充字段'])
   assert.deepEqual(riskOnlyAdvice.sections.map((section) => section.title), ['已知存在风险'])
 })
@@ -192,6 +198,8 @@ test('AI advice risk section uses compact card styling hooks', () => {
   assert.match(detailViewTemplate, /class="\['risk-advice-card', card\.tone\]"/)
   assert.match(detailViewStyle, /\.validation-card \{\s*border: 1px solid #e5e7eb;/)
   assert.match(detailViewStyle, /\.validation-section--risk \.risk-advice-card \{\s*display: grid;\s*gap: 8px;\s*padding: 12px 12px 11px;/)
+  assert.match(detailViewStyle, /\.validation-section--risk \.risk-advice-card\.low/)
+  assert.match(detailViewStyle, /\.risk-advice-card\.low/)
   assert.match(detailViewStyle, /\.validation-section--risk \.risk-advice-meta ul,\s*\.validation-section--risk \.risk-advice-meta p \{\s*margin: 0;/)
 })
 
@@ -316,9 +324,35 @@ test('expense item upload remains limited to one receipt per detail row', () =>
 
 test('expense item upload patches OCR amount into the visible detail row', () => {
   assert.match(detailViewScript, /const recognizedItemAmount = Number\(payload\?\.item_amount \?\? payload\?\.itemAmount\)/)
+  assert.match(detailViewScript, /const recognizedItemDate = normalizeIsoDateValue\(payload\?\.item_date \?\? payload\?\.itemDate\)/)
+  assert.match(detailViewScript, /const recognizedItemType = String\(payload\?\.item_type \?\? payload\?\.itemType \?\? ''\)\.trim\(\)/)
+  assert.match(detailViewScript, /const recognizedItemReason = String\(payload\?\.item_reason \?\? payload\?\.itemReason \?\? ''\)\.trim\(\)/)
   assert.match(detailViewScript, /itemPatch\.itemAmount = recognizedItemAmount/)
   assert.match(detailViewScript, /itemPatch\.amount = formatCurrency\(recognizedItemAmount\)/)
-  assert.match(detailViewScript, /expenseEditor\.itemAmount = String\(recognizedItemAmount\)/)
+  assert.match(detailViewScript, /populateExpenseEditor\(\{ \.\.\.item, \.\.\.itemPatch \}\)/)
+})
+
+test('expense detail edit keeps delete but removes cancel and allows draft placeholders', () => {
+  assert.doesNotMatch(detailViewTemplate, /@click="cancelExpenseEdit"/)
+  assert.doesNotMatch(detailViewScript, /function cancelExpenseEdit/)
+  assert.match(detailViewScript, /if \(expenseEditor\.itemDate && !isValidIsoDate\(expenseEditor\.itemDate\)\)/)
+  assert.doesNotMatch(detailViewScript, /请输入费用说明。/)
+  assert.doesNotMatch(detailViewScript, /请输入大于 0 的费用金额。/)
+  assert.match(detailViewScript, /const amountText = String\(expenseEditor\.itemAmount \|\| ''\)\.trim\(\)/)
+  assert.match(detailViewScript, /const nextAmount = amountText \? Number\(amountText\) : 0/)
+  assert.match(detailViewScript, /if \(expenseEditor\.itemDate\) \{[\s\S]*itemPayload\.item_date = expenseEditor\.itemDate/)
+})
+
+test('travel detail AI advice adds low risk reminders for optional receipts', () => {
+  assert.match(detailViewScript, /function buildOptionalTravelReceiptRiskCards\(requestModel, items\)/)
+  assert.match(detailViewScript, /id: 'travel-optional-hotel-ticket'[\s\S]*tone: 'low'[\s\S]*住宿票据提醒/)
+  assert.match(detailViewScript, /不要忘记补充酒店住宿票据/)
+  assert.match(detailViewScript, /id: 'travel-optional-ride-ticket'[\s\S]*tone: 'low'[\s\S]*乘车票据提醒/)
+  assert.match(detailViewScript, /可以继续补充票据报销/)
+  assert.match(
+    detailViewScript,
+    /\.\.\.buildOptionalTravelReceiptRiskCards\(request\.value, expenseItems\.value\)/
+  )
 })
 
 test('expense detail save is blocked while attachment recognition is running', () => {
@@ -335,21 +369,25 @@ test('expense detail save is blocked while attachment recognition is running', (
 })
 
 test('transport ticket descriptions use route format and invalid format becomes risk advice', () => {
-  assert.match(detailViewScript, /const ROUTE_DESCRIPTION_EXPENSE_TYPES = new Set\(\['train_ticket', 'flight_ticket', 'ride_ticket'\]\)/)
+  assert.match(detailViewScript, /const ROUTE_DESCRIPTION_EXPENSE_TYPES = new Set\(\['train_ticket', 'flight_ticket', 'ship_ticket', 'ferry_ticket', 'ride_ticket'\]\)/)
+  assert.match(detailViewScript, /const HOTEL_DESCRIPTION_EXPENSE_TYPES = new Set\(\['hotel_ticket'\]\)/)
   assert.match(detailViewScript, /const ROUTE_DESCRIPTION_PATTERN = \/\^\[A-Za-z0-9\\u4e00-\\u9fa5/)
-  assert.match(detailViewScript, /return isRouteDescriptionExpenseType\(itemType\) \? '始发地-目的地，例如：广州南-北京南' : '输入费用说明'/)
-  assert.match(detailViewScript, /return isRouteDescriptionExpenseType\(itemType\) \? '始发地-目的地' : '业务报销说明'/)
+  assert.match(detailViewScript, /return '起始地-目的地，例如：广州南-北京南'/)
+  assert.match(detailViewScript, /return '起始地-目的地'/)
+  assert.match(detailViewScript, /return '目的地酒店，例如：北京中心酒店'/)
+  assert.match(detailViewScript, /return '目的地酒店'/)
+  assert.match(detailViewScript, /isSyntheticLocationDisplay\(item\.detail, item\.itemType\)/)
   assert.match(
     detailViewScript,
     /isRouteDescriptionExpenseType\(item\.itemType\) && !isValidRouteDescription\(item\.itemReason\)[\s\S]*issues\.push\('行程说明格式错误'\)/
   )
   assert.match(
     detailViewScript,
-    /isRouteDescriptionExpenseType\(expenseEditor\.itemType\)[\s\S]*!isValidRouteDescription\(expenseEditor\.itemReason\)[\s\S]*return '行程说明格式应为“始发地-目的地”，例如：广州南-北京南。'/
+    /isRouteDescriptionExpenseType\(expenseEditor\.itemType\)[\s\S]*!isValidRouteDescription\(expenseEditor\.itemReason\)[\s\S]*return '行程说明格式应为“起始地-目的地”，例如：广州南-北京南。'/
   )
   assert.match(
     detailViewScript,
-    /fieldText === '行程说明格式错误'[\s\S]*return `\$\{labelPrefix\}的行程说明，格式应为“始发地-目的地”。`/
+    /fieldText === '行程说明格式错误'[\s\S]*return `\$\{labelPrefix\}的行程说明，格式应为“起始地-目的地”。`/
   )
 })