feat: 完善报销单审批流程及退回原因追踪

新增直属领导审批通过接口和审批待办列表查询，报销单退回
支持原因码分类和审批环节标记，优化票据附件去重和路径
回退查找，前端新增退回原因对话框、审批收件箱和工作台
图标组件，补充工具函数和单元测试覆盖。

server/storage/expense_claims/193e6c44-29f7-4ac9-9d64-c57ddfd186c0/f8e2b572-9f9f-472f-957c-cb49c5e1e283/发票_3_京S98876.pdf.meta.json

@@ -1,23 +1,25 @@
 {
   "file_name": "发票_3_京S98876.pdf",
-  "storage_key": "1e0f6a47-fba8-4da8-8748-24465bdb06f3/800c9a01-9dc5-4515-8170-d8ae02ade93e/发票_3_京S98876.pdf",
+  "storage_key": "193e6c44-29f7-4ac9-9d64-c57ddfd186c0/f8e2b572-9f9f-472f-957c-cb49c5e1e283/发票_3_京S98876.pdf",
   "media_type": "application/pdf",
   "size_bytes": 61170,
-  "uploaded_at": "2026-05-20T02:21:35.637474+00:00",
+  "uploaded_at": "2026-05-20T12:25:49.243144+00:00",
   "previewable": true,
   "preview_kind": "image",
-  "preview_storage_key": "1e0f6a47-fba8-4da8-8748-24465bdb06f3/800c9a01-9dc5-4515-8170-d8ae02ade93e/发票_3_京S98876.preview.png",
+  "preview_storage_key": "193e6c44-29f7-4ac9-9d64-c57ddfd186c0/f8e2b572-9f9f-472f-957c-cb49c5e1e283/发票_3_京S98876.preview.png",
   "preview_media_type": "image/png",
   "preview_file_name": "发票_3_京S98876.preview.png",
   "analysis": {
-    "severity": "medium",
-    "label": "中风险",
-    "headline": "AI提示：附件存在明显待整改项",
-    "summary": "当前附件可见部分内容，但金额、用途、日期或附件类型仍有缺失或不一致。",
+    "severity": "pass",
+    "label": "AI提示符合条件",
+    "headline": "AI提示：附件符合基础校验条件",
+    "summary": "已识别到票据类型和关键字段，且符合当前费用场景的附件要求。",
     "points": [
-      "用途字段：当前费用项目为其他，但附件内容更像住宿、交通相关票据。"
+      "票据类型：已识别为增值税发票。",
+      "附件类型要求：当前费用项目为交通费，已识别为增值税发票，符合当前交通费场景的附件要求。",
+      "金额字段：已识别到与当前明细接近的金额 121.54 元。"
     ],
-    "suggestion": "建议根据风险点补齐清晰票据，或修正金额、日期、费用说明后再提交。"
+    "suggestion": "建议继续核对报销分类、费用说明和业务场景是否一致。"
   },
   "document_info": {
     "document_type": "vat_invoice",
@@ -49,23 +51,25 @@
   },
   "requirement_check": {
     "matches": true,
-    "current_expense_type": "other",
-    "current_expense_type_label": "其他费用",
+    "current_expense_type": "transport",
+    "current_expense_type_label": "交通费",
     "allowed_scene_labels": [
-      "其他票据"
+      "交通"
     ],
     "allowed_document_type_labels": [
+      "停车/通行费票据",
       "一般收据/凭证",
+      "出租车/网约车票据",
       "增值税发票"
     ],
     "recognized_scene_code": "other",
     "recognized_scene_label": "通用发票",
     "recognized_document_type": "vat_invoice",
     "recognized_document_type_label": "增值税发票",
-    "mismatch_severity": "medium",
+    "mismatch_severity": "high",
     "rule_code": "rule.expense.scene_submission_standard",
     "rule_name": "报销场景提交与附件标准",
-    "message": "当前费用项目为其他费用，已识别为增值税发票，符合当前其他费用场景的附件要求。"
+    "message": "当前费用项目为交通费，已识别为增值税发票，符合当前交通费场景的附件要求。"
   },
   "ocr_status": "recognized",
   "ocr_error": "",

server/storage/knowledge/.index.json

@@ -14,8 +14,8 @@
       "updated_at": "2026-05-17T09:28:28.999515+00:00",
       "uploaded_by": "admin",
       "version_number": 1,
-      "ingest_status": 1,
-      "ingest_status_updated_at": "2026-05-20T06:29:01.123795+00:00",
+      "ingest_status": 3,
+      "ingest_status_updated_at": "2026-05-17T10:01:33.272539+00:00",
       "ingest_completed_at": "2026-05-17T10:01:33.272539+00:00",
       "ingest_document_name": "远光《公司支出管理办法（2024）》.pdf",
       "ingest_document_updated_at": "2026-05-17T09:28:28.999515+00:00",