feat: 完善差旅票据行程提取与费用明细回填逻辑

增强文档智能识别的票据场景关键词和字段提取能力，优化
会话关联草稿报销单的解析路径，修复费用明细合并和票据
去重边界问题，前端改进报销创建和审批详情交互，补充单
元测试覆盖。

web/tests/travel-reimbursement-review-drawer-switch.test.mjs

@@ -110,3 +110,36 @@ test('composer exposes travel calculator and posts spreadsheet-backed result int
   assert.match(createViewScript, /messages\.value\.push\(createMessage\('assistant', buildTravelCalculatorResultText\(payload\)/)
   assert.match(reimbursementService, /export function calculateTravelReimbursement\(payload = \{\}\) \{[\s\S]*\/reimbursements\/travel-calculator/)
 })
+
+test('continuing receipt upload preserves prior review form context', () => {
+  assert.match(createViewScript, /function buildReviewFormContextFromPayload\(reviewPayload, inlineState = null\)/)
+  assert.match(createViewScript, /function buildBusinessTimeContextFromReviewValues\(values = \{\}\)/)
+  assert.match(
+    createViewScript,
+    /resolvedUploadDisposition === 'continue_existing'[\s\S]*buildReviewFormContextFromPayload\([\s\S]*activeReviewPayload\.value[\s\S]*reviewInlineForm\.value[\s\S]*extraContext\.review_form_values/s
+  )
+  assert.match(
+    createViewScript,
+    /inheritedReviewContext\.business_time_context[\s\S]*extraContext\.business_time_context = inheritedReviewContext\.business_time_context/s
+  )
+})
+
+test('review drawer save action is disabled while receipt recognition is submitting', () => {
+  assert.match(createViewScript, /const submitting = ref\(false\)/)
+  assert.match(
+    createViewScript,
+    /submitting\.value = true[\s\S]*recognizeOcrFiles\(files\)[\s\S]*submitting\.value = false/s
+  )
+  assert.match(
+    createViewTemplate,
+    /class="review-side-save-pill"[\s\S]*:disabled="reviewActionBusy \|\| submitting"[\s\S]*@click="saveInlineReviewChanges"/
+  )
+  assert.match(
+    createViewScript,
+    /async function handleReviewAction\(message, action\) \{[\s\S]*if \(!actionType \|\| submitting\.value \|\| reviewActionBusy\.value \|\| sessionSwitchBusy\.value\) return/
+  )
+  assert.match(
+    createViewScript,
+    /function saveInlineReviewChanges\(\) \{[\s\S]*\|\| submitting\.value[\s\S]*\|\| sessionSwitchBusy\.value[\s\S]*\) return/
+  )
+})