refactor(ocr): 优化 OCR 渠道扫描次数累加逻辑

app/Controllers/Http/OcrChannelController.ts

@@ -76,7 +76,7 @@ export default class OcrChannelController {
     }
 
     public async plusScanNum({ request, response }: HttpContextContract) {
-        const scanCount = Number(request.param('scanCount')) // 确保 scanCount 是数字
+        const scanCount = Number(request.param('scanCount'))
         if (isNaN(scanCount)) {
             return response.badRequest({ message: 'scanCount 参数必须是有效数字' })
         }
@@ -89,7 +89,7 @@ export default class OcrChannelController {
                 })
             }
 
-            ocrChannel.scanNum = (Number(ocrChannel.scanNum) || 0) + scanCount // 确保 scanNum 也是数字
+            ocrChannel.scanNum = (Number(ocrChannel.scanNum) || 0) + scanCount
             await ocrChannel.save()
 
             return response.ok(ocrChannel)