feat: 细化差旅票据费用明细分类并自动计算出差补贴

将差旅费用明细拆分为火车票、机票、住宿票、乘车等细分类
型，根据票据字段自动生成行程/事由描述，结合规则引擎自
动计算出差补贴金额，前端适配费用明细编辑和差旅票据审
核交互，补充单元测试覆盖。

server/storage/expense_claims/3754b9c8-e0f0-4d88-a24c-d52c7620be2c/3d643ccb-cfb5-48c5-8037-39dbe1fa87e4/2月20_武汉-上海.pdf.meta.json

@@ -0,0 +1,85 @@
+{
+  "file_name": "2月20_武汉-上海.pdf",
+  "storage_key": "3754b9c8-e0f0-4d88-a24c-d52c7620be2c/3d643ccb-cfb5-48c5-8037-39dbe1fa87e4/2月20_武汉-上海.pdf",
+  "media_type": "application/pdf",
+  "size_bytes": 24995,
+  "uploaded_at": "2026-05-21T01:54:55.627221+00:00",
+  "previewable": true,
+  "preview_kind": "image",
+  "preview_storage_key": "3754b9c8-e0f0-4d88-a24c-d52c7620be2c/3d643ccb-cfb5-48c5-8037-39dbe1fa87e4/2月20_武汉-上海.preview.png",
+  "preview_media_type": "image/png",
+  "preview_file_name": "2月20_武汉-上海.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。",
+    "points": [
+      "用途字段：用户填写用途“至 2026-02-23，支撑上海电力项目部署，”与票据内容不一致，当前附件更像交通相关材料。"
+    ],
+    "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。"
+  },
+  "document_info": {
+    "document_type": "train_ticket",
+    "document_type_label": "火车/高铁票",
+    "scene_code": "travel",
+    "scene_label": "差旅票据",
+    "fields": [
+      {
+        "key": "amount",
+        "label": "金额",
+        "value": "354元"
+      },
+      {
+        "key": "date",
+        "label": "日期",
+        "value": "2026-05-18"
+      },
+      {
+        "key": "merchant_name",
+        "label": "商户",
+        "value": "中国铁路"
+      },
+      {
+        "key": "invoice_number",
+        "label": "票据号码",
+        "value": "26429165800002785705"
+      },
+      {
+        "key": "route",
+        "label": "行程",
+        "value": "武汉-上海"
+      }
+    ]
+  },
+  "requirement_check": {
+    "matches": true,
+    "current_expense_type": "train_ticket",
+    "current_expense_type_label": "火车票",
+    "allowed_scene_labels": [],
+    "allowed_document_type_labels": [],
+    "recognized_scene_code": "travel",
+    "recognized_scene_label": "差旅票据",
+    "recognized_document_type": "train_ticket",
+    "recognized_document_type_label": "火车/高铁票",
+    "mismatch_severity": "high",
+    "rule_code": "rule.expense.scene_submission_standard",
+    "rule_name": "报销场景提交与附件标准",
+    "message": "当前费用项目为火车票，已识别为火车/高铁票。"
+  },
+  "ocr_status": "recognized",
+  "ocr_error": "",
+  "ocr_text": "电子发票\n（铁路电子客票)\n州\n国家税务总局\n发票号码：26429165800002785705\n湖北省税务局\n开票日期:2026年05月18日\n武汉站\n上海虹桥站\nG458\nWuhan\nShanghaihongqiao\n2026年02月20日\n07:55开\n06车01B号\n二等座\n票价：￥354.00\n4201061987****1615\n曹笑竹\n电子客票号：6580061086021391007342026\n购买方名称:曹笑竹\n统一社会信用代码：\n买票请到12306发货请到95306\n中国铁路祝您旅途愉快",
+  "ocr_summary": "电子发票；（铁路电子客票)；州",
+  "ocr_avg_score": 0.9580968717734019,
+  "ocr_line_count": 24,
+  "ocr_classification_source": "rule",
+  "ocr_classification_confidence": 0.88,
+  "ocr_classification_evidence": [
+    "铁路电子客票",
+    "电子客票",
+    "铁路",
+    "二等座"
+  ],
+  "ocr_warnings": []
+}

server/storage/expense_claims/3754b9c8-e0f0-4d88-a24c-d52c7620be2c/a8d8e56b-8e0c-4feb-9371-1e3cd71ce25b/2月23_上海-武汉.pdf.meta.json

@@ -0,0 +1,85 @@
+{
+  "file_name": "2月23_上海-武汉.pdf",
+  "storage_key": "3754b9c8-e0f0-4d88-a24c-d52c7620be2c/a8d8e56b-8e0c-4feb-9371-1e3cd71ce25b/2月23_上海-武汉.pdf",
+  "media_type": "application/pdf",
+  "size_bytes": 24940,
+  "uploaded_at": "2026-05-21T01:55:11.468967+00:00",
+  "previewable": true,
+  "preview_kind": "image",
+  "preview_storage_key": "3754b9c8-e0f0-4d88-a24c-d52c7620be2c/a8d8e56b-8e0c-4feb-9371-1e3cd71ce25b/2月23_上海-武汉.preview.png",
+  "preview_media_type": "image/png",
+  "preview_file_name": "2月23_上海-武汉.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。",
+    "points": [
+      "用途字段：用户填写用途“至 2026-02-23，支撑上海电力项目部署，”与票据内容不一致，当前附件更像交通相关材料。"
+    ],
+    "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。"
+  },
+  "document_info": {
+    "document_type": "train_ticket",
+    "document_type_label": "火车/高铁票",
+    "scene_code": "travel",
+    "scene_label": "差旅票据",
+    "fields": [
+      {
+        "key": "amount",
+        "label": "金额",
+        "value": "354元"
+      },
+      {
+        "key": "date",
+        "label": "日期",
+        "value": "2026-05-18"
+      },
+      {
+        "key": "merchant_name",
+        "label": "商户",
+        "value": "中国铁路"
+      },
+      {
+        "key": "invoice_number",
+        "label": "票据号码",
+        "value": "26319166100006175398"
+      },
+      {
+        "key": "route",
+        "label": "行程",
+        "value": "上海-武汉"
+      }
+    ]
+  },
+  "requirement_check": {
+    "matches": true,
+    "current_expense_type": "train_ticket",
+    "current_expense_type_label": "火车票",
+    "allowed_scene_labels": [],
+    "allowed_document_type_labels": [],
+    "recognized_scene_code": "travel",
+    "recognized_scene_label": "差旅票据",
+    "recognized_document_type": "train_ticket",
+    "recognized_document_type_label": "火车/高铁票",
+    "mismatch_severity": "high",
+    "rule_code": "rule.expense.scene_submission_standard",
+    "rule_name": "报销场景提交与附件标准",
+    "message": "当前费用项目为火车票，已识别为火车/高铁票。"
+  },
+  "ocr_status": "recognized",
+  "ocr_error": "",
+  "ocr_text": "电子发票\n（铁路电子客票）\n州\n国家税务总局\n发票号码：26319166100006175398\n开票日期:2026年05月18日\n上海市税务局\n上海虹桥站\n武汉站\nG456\nShanghaihongqiao\nWuhan\n2026年02月23日\n13:54开\n12车08B号\n二等座\n票价：￥354.00\n4201061987****1615\n曹笑竹\n电子客票号：6610061086021394837402026\n购买方名称:曹笑竹\n统一社会信用代码：\n买票请到12306发货请到95306\n中国铁路祝您旅途愉快",
+  "ocr_summary": "电子发票；（铁路电子客票）；州",
+  "ocr_avg_score": 0.9620026834309101,
+  "ocr_line_count": 24,
+  "ocr_classification_source": "rule",
+  "ocr_classification_confidence": 0.88,
+  "ocr_classification_evidence": [
+    "铁路电子客票",
+    "电子客票",
+    "铁路",
+    "二等座"
+  ],
+  "ocr_warnings": []
+}