feat: 增加差旅报销标准测算和财务终审流程

新增差旅报销测算接口及 Spreadsheet 规则解析，审批流程拆分
直属领导审批与财务终审两阶段并细分权限，修复 PDF 文本层
缺失时自动回退 OCR，提交后清理关联会话，前端适配审批流
交互并补充单元测试。

web/src/composables/useRequests.js

@@ -21,7 +21,7 @@ const LOCATION_REQUIRED_EXPENSE_TYPES = new Set([
 ])
 
 const REIMBURSEMENT_PROGRESS_LABELS = [
-  '保存草稿',
+  '创建单据',
   '待提交',
   'AI预审',
   '直属领导审批',
@@ -270,6 +270,21 @@ function normalizeText(value) {
   return String(value || '').trim()
 }
 
+function isEmailLike(value) {
+  return /^[^@\s]+@[^@\s]+\.[^@\s]+$/.test(normalizeText(value))
+}
+
+function resolveDisplayName(...values) {
+  for (const value of values) {
+    const normalized = normalizeText(value)
+    if (normalized && !isEmailLike(normalized)) {
+      return normalized
+    }
+  }
+
+  return ''
+}
+
 function getRiskFlags(claim) {
   return Array.isArray(claim?.risk_flags_json) ? claim.risk_flags_json : []
 }
@@ -344,7 +359,7 @@ function buildCompletedStepMeta(claim, label) {
   const stepLabel = normalizeText(label)
   const employeeName = normalizeText(claim?.employee_name) || '申请人'
 
-  if (stepLabel === '保存草稿') {
+  if (stepLabel === '创建单据') {
     const createdAt = formatDateTime(claim?.created_at)
     return buildProgressStepMeta(`${employeeName}创建`, createdAt)
   }
@@ -362,7 +377,12 @@ function buildCompletedStepMeta(claim, label) {
   if (stepLabel === '直属领导审批' || stepLabel === '财务审批') {
     const approvalEvent = findApprovalEventForStep(claim, stepLabel)
     if (approvalEvent) {
-      const operator = normalizeText(approvalEvent.operator) || (stepLabel === '财务审批' ? '财务' : '审批人')
+      const operator = resolveDisplayName(
+        approvalEvent.operator,
+        approvalEvent.operator_name,
+        approvalEvent.operatorName,
+        stepLabel === '直属领导审批' ? claim?.manager_name : ''
+      ) || (stepLabel === '财务审批' ? '财务' : '直属领导')
       const approvedAt = formatDateTime(approvalEvent.created_at || approvalEvent.createdAt)
       return buildProgressStepMeta(`${operator}通过`, approvedAt, `${operator}审批通过 ${approvedAt}`.trim())
     }
@@ -383,7 +403,7 @@ function buildCompletedStepMeta(claim, label) {
 
 function resolveCurrentStepStartedAt(claim, label) {
   const stepLabel = normalizeText(label)
-  if (stepLabel === '保存草稿') {
+  if (stepLabel === '创建单据') {
     return claim?.created_at
   }
   if (stepLabel === '待提交') {
@@ -539,7 +559,7 @@ export function mapExpenseClaimToRequest(claim) {
     employeeName: String(claim?.employee_name || '').trim() || '待补充',
     employeePosition: String(claim?.employee_position || '').trim(),
     employeeGrade: String(claim?.employee_grade || '').trim(),
-    managerName: String(claim?.manager_name || '').trim(),
+    managerName: resolveDisplayName(claim?.manager_name),
     roleLabels: Array.isArray(claim?.role_labels) ? claim.role_labels.filter(Boolean) : [],
     entity: '',
     typeCode,