feat: 报销审批流重构与管家计划全链路贯通

- 重构报销状态注册表、审批流路由与平台风险标记
- 完善管家意图规划器与模型计划构建器全链路
- 新增 OCR Worker 脚本、数据库会话管理与通知状态
- 优化文档中心、日志视图、预算中心与员工管理交互
- 增强工作台摘要、图标资源与全局主题样式
- 补充审批路由、状态注册、OCR 服务与管家规划器测试覆盖

web/src/services/ocr.js

@@ -1,16 +1,44 @@
 import { apiRequest } from './api.js'
 
+const inflightOcrRequests = new Map()
+
+function buildOcrRequestKey(files = []) {
+  return files
+    .map((file) => [
+      String(file?.name || ''),
+      String(file?.size || 0),
+      String(file?.lastModified || 0),
+      String(file?.receiptId || '')
+    ].join(':'))
+    .join('|')
+}
+
 export function recognizeOcrFiles(files, options = {}) {
+  const requestKey = buildOcrRequestKey(files)
+  if (requestKey && inflightOcrRequests.has(requestKey)) {
+    return inflightOcrRequests.get(requestKey)
+  }
+
   const formData = new FormData()
   for (const file of files) {
     formData.append('files', file)
     formData.append('receipt_ids', String(file?.receiptId || ''))
   }
 
-  return apiRequest('/ocr/recognize', {
+  const request = apiRequest('/ocr/recognize', {
     method: 'POST',
     body: formData,
     contentType: null,
     ...options
   })
+  if (!requestKey) {
+    return request
+  }
+
+  inflightOcrRequests.set(requestKey, request)
+  request.then(
+    () => inflightOcrRequests.delete(requestKey),
+    () => inflightOcrRequests.delete(requestKey)
+  )
+  return request
 }