feat: 运单号识别后自动推断快递公司并显示中文名称

- 新增运单号前缀映射表覆盖安能/圆通/顺丰/申通/中通/韵达等
- 前端运单卡片显示快递公司中文名而非编码

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

backend/app/services/logistics_service.py

@@ -741,7 +741,11 @@ class LogisticsService:
                 if barcodes and not tracking_number:
                     tracking_number = str(barcodes[0]).strip()
 
-                logger.info("[recognize_waybill] 快递100识别成功: %s, code=%s", tracking_number, result.get("code"))
+                # 6. 根据运单号前缀推断快递公司
+                if tracking_number:
+                    express_company, express_name = self._guess_express_by_tracking(tracking_number)
+
+                logger.info("[recognize_waybill] 快递100识别成功: %s, company=%s", tracking_number, express_name)
             except Exception as exc:
                 logger.warning("[recognize_waybill] 快递100 OCR 失败，将返回空结果: %s", exc)
                 raw_result = {"error": str(exc)}
@@ -754,6 +758,44 @@ class LogisticsService:
             "raw_result": raw_result,
         }
 
+    # 常见快递公司运单号前缀映射
+    _EXPRESS_PREFIX_MAP = [
+        ("610", "ane", "安能物流"),
+        ("773", "ane", "安能物流"),
+        ("YT", "yuantong", "圆通速递"),
+        ("SF", "shunfeng", "顺丰速运"),
+        ("77", "shunfeng", "顺丰速运"),
+        ("75", "shentong", "申通快递"),
+        ("76", "shentong", "申通快递"),
+        ("78", "zhongtong", "中通快递"),
+        ("268", "zhongtong", "中通快递"),
+        ("310", "yunda", "韵达快递"),
+        ("468", "yunda", "韵达快递"),
+        ("55", "yunda", "韵达快递"),
+        ("228", "yunda", "韵达快递"),
+        ("57", "jd", "京东物流"),
+        ("JD", "jd", "京东物流"),
+        ("D", "debang", "德邦快递"),
+        ("dpk", "debang", "德邦快递"),
+        ("33", "zhaijisong", "宅急送"),
+        ("EM", "ems", "EMS"),
+        ("E", "ems", "EMS"),
+        ("CN", "guoji", "国际包裹"),
+    ]
+
+    @staticmethod
+    def _guess_express_by_tracking(tracking_number: str) -> tuple[str, str]:
+        """根据运单号前缀推断快递公司编码和名称。
+
+        Returns:
+            (express_company, express_name) 元组，未匹配时返回空字符串。
+        """
+        tn = tracking_number.upper().strip()
+        for prefix, code, name in LogisticsService._EXPRESS_PREFIX_MAP:
+            if tn.startswith(prefix):
+                return code, name
+        return "", ""
+
     def submit_waybills(self, task_id: int, payload: dict, session: Session | None = None, current_user: dict | None = None) -> dict:
         """批量提交运单号，校验任务状态。"""
         if session is None:

frontend/mini-app/pages/driver/task-detail/task-detail.wxml

@@ -65,7 +65,7 @@
         <view wx:for="{{waybillList}}" wx:key="index" class="waybill-item">
           <view class="waybill-info">
             <view class="waybill-number">{{item.tracking_number || '未识别'}}</view>
-            <view class="waybill-company" wx:if="{{item.express_company}}">{{item.express_company}}</view>
+            <view class="waybill-company" wx:if="{{item.express_name}}">{{item.express_name}}</view>
             <view class="waybill-confidence" wx:if="{{item.confidence > 0 && item.confidence < 0.8}}">识别置信度较低，请核对</view>
           </view>
           <view class="waybill-actions">
@@ -113,7 +113,7 @@
         <view wx:for="{{waybillList}}" wx:key="index" class="waybill-item waybill-item-readonly">
           <view class="waybill-info">
             <view class="waybill-number">{{item.tracking_number}}</view>
-            <view class="waybill-company" wx:if="{{item.express_company}}">{{item.express_company}}</view>
+            <view class="waybill-company" wx:if="{{item.express_name}}">{{item.express_name}}</view>
           </view>
           <view class="waybill-status-badge" wx:if="{{item.status}}">{{item.status}}</view>
         </view>