feat: Excel 导入按列位置读取，IoT 卡导入支持卡业务类型

- 重写 parseCardRows：移除列名识别，固定跳过第1行表头，按 col0=ICCID、
  col1=MSISDN、col2=VirtualNo 取值，VirtualNo 升级为必填字段
- 重写 ParseDeviceExcel：移除 buildDeviceColumnIndex，IMEI 调整至第5列
  新增 MaxSimSlots 范围校验 [1,4]，整行为空时不计入 total
- 删除 findCardColumns 和 buildDeviceColumnIndex 两个冗余函数
- ImportIotCardRequest 新增 card_category 字段（normal/industry，默认 normal）
- IotCardImportTask model 新增 card_category 字段
- 迁移 000111：tb_iot_card_import_task 新增 card_category 列
- CreateImportTask 将 req.CardCategory 写入任务，空串兜底 normal
- processBatch 改用 task.CardCategory 替代写死的 CardCategoryNormal
- ImportTaskResponse 新增 card_category 字段返回

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

pkg/utils/excel.go

@@ -120,55 +120,50 @@ func ParseDeviceExcel(filePath string) (*DeviceParseResult, error) {
 		return nil, ErrExcelNoData
 	}
 
-	header := rows[0]
-	colIndex := buildDeviceColumnIndex(header)
-
 	parseResult := &DeviceParseResult{
 		Rows:        make([]DeviceRow, 0),
 		ParseErrors: make([]CSVParseError, 0),
 	}
 
+	// 按固定列位置读取，第1行为表头跳过：
+	// col0=虚拟号 col1=设备名称 col2=设备型号 col3=设备类型 col4=IMEI
+	// col5=制造商 col6=最大SIM槽数 col7~10=卡1~4 ICCID
 	for i := 1; i < len(rows); i++ {
 		record := rows[i]
 		lineNum := i + 1
 
 		row := DeviceRow{Line: lineNum}
 
-		if idx := colIndex["virtual_no"]; idx >= 0 && idx < len(record) {
-			row.VirtualNo = strings.TrimSpace(record[idx])
-		}
-		if idx := colIndex["imei"]; idx >= 0 && idx < len(record) {
-			row.IMEI = strings.TrimSpace(record[idx])
-		}
-		if idx := colIndex["device_name"]; idx >= 0 && idx < len(record) {
-			row.DeviceName = strings.TrimSpace(record[idx])
-		}
-		if idx := colIndex["device_model"]; idx >= 0 && idx < len(record) {
-			row.DeviceModel = strings.TrimSpace(record[idx])
-		}
-		if idx := colIndex["device_type"]; idx >= 0 && idx < len(record) {
-			row.DeviceType = strings.TrimSpace(record[idx])
-		}
-		if idx := colIndex["max_sim_slots"]; idx >= 0 && idx < len(record) {
-			if n, err := strconv.Atoi(strings.TrimSpace(record[idx])); err == nil {
-				row.MaxSimSlots = n
+		getCol := func(idx int) string {
+			if idx < len(record) {
+				return strings.TrimSpace(record[idx])
 			}
-		}
-		if idx := colIndex["manufacturer"]; idx >= 0 && idx < len(record) {
-			row.Manufacturer = strings.TrimSpace(record[idx])
+			return ""
 		}
 
+		row.VirtualNo = getCol(0)
+		row.DeviceName = getCol(1)
+		row.DeviceModel = getCol(2)
+		row.DeviceType = getCol(3)
+		row.IMEI = getCol(4)
+		row.Manufacturer = getCol(5)
+		maxSimSlotsStr := getCol(6)
+
 		row.ICCIDs = make([]string, 0, 4)
-		for j := 1; j <= 4; j++ {
-			colName := "iccid_" + strconv.Itoa(j)
-			if idx := colIndex[colName]; idx >= 0 && idx < len(record) {
-				iccid := strings.TrimSpace(record[idx])
-				if iccid != "" {
-					row.ICCIDs = append(row.ICCIDs, iccid)
-				}
+		for j := 7; j <= 10; j++ {
+			iccid := getCol(j)
+			if iccid != "" {
+				row.ICCIDs = append(row.ICCIDs, iccid)
 			}
 		}
 
+		// 整行目标列皆为空，视为空行跳过，不计入 total
+		if row.VirtualNo == "" && row.DeviceName == "" && row.DeviceModel == "" &&
+			row.DeviceType == "" && row.IMEI == "" && row.Manufacturer == "" &&
+			maxSimSlotsStr == "" && len(row.ICCIDs) == 0 {
+			continue
+		}
+
 		parseResult.TotalCount++
 
 		if row.VirtualNo == "" {
@@ -179,8 +174,22 @@ func ParseDeviceExcel(filePath string) (*DeviceParseResult, error) {
 			continue
 		}
 
+		// 解析最大SIM槽数
+		if maxSimSlotsStr != "" {
+			if n, err := strconv.Atoi(maxSimSlotsStr); err == nil {
+				row.MaxSimSlots = n
+			}
+		}
+
+		// 范围校验：不在 [1,4] 则失败；为空/0 时回填默认值 4
 		if row.MaxSimSlots == 0 {
 			row.MaxSimSlots = 4
+		} else if row.MaxSimSlots < 1 || row.MaxSimSlots > 4 {
+			parseResult.ParseErrors = append(parseResult.ParseErrors, CSVParseError{
+				Line:   lineNum,
+				Reason: "最大SIM槽数必须在1-4之间",
+			})
+			continue
 		}
 
 		parseResult.Rows = append(parseResult.Rows, row)
@@ -209,70 +218,44 @@ func selectSheet(f *excelize.File) string {
 }
 
 // parseCardRows 解析卡数据行
-// 自动检测表头并提取ICCID和MSISDN列
+// 第1行固定为表头跳过，按列位置取值：col0=ICCID、col1=MSISDN、col2=VirtualNo
 func parseCardRows(rows [][]string) (*CSVParseResult, error) {
 	result := &CSVParseResult{
 		Cards:       make([]CardInfo, 0),
 		ParseErrors: make([]CSVParseError, 0),
 	}
 
-	headerSkipped := false
-	iccidCol, msisdnCol, virtualNoCol := -1, -1, -1
-
-	if len(rows) > 0 {
-		iccidCol, msisdnCol, virtualNoCol = findCardColumns(rows[0])
-		if iccidCol >= 0 && msisdnCol >= 0 {
-			headerSkipped = true
-		}
-	}
-
-	startLine := 0
-	if headerSkipped {
-		startLine = 1
-	}
-
-	for i := startLine; i < len(rows); i++ {
+	// 从第2行（索引1）开始，跳过第1行表头
+	for i := 1; i < len(rows); i++ {
 		row := rows[i]
 		lineNum := i + 1
 
-		if len(row) == 0 {
-			continue
-		}
-
 		iccid := ""
 		msisdn := ""
 		virtualNo := ""
 
-		if iccidCol >= 0 {
-			if iccidCol < len(row) {
-				iccid = strings.TrimSpace(row[iccidCol])
-			}
-			if msisdnCol < len(row) {
-				msisdn = strings.TrimSpace(row[msisdnCol])
-			}
-			if virtualNoCol >= 0 && virtualNoCol < len(row) {
-				virtualNo = strings.TrimSpace(row[virtualNoCol])
-			}
-		} else {
-			if len(row) >= 1 {
-				iccid = strings.TrimSpace(row[0])
-			}
-			if len(row) >= 2 {
-				msisdn = strings.TrimSpace(row[1])
-			}
+		if len(row) >= 1 {
+			iccid = strings.TrimSpace(row[0])
+		}
+		if len(row) >= 2 {
+			msisdn = strings.TrimSpace(row[1])
+		}
+		if len(row) >= 3 {
+			virtualNo = strings.TrimSpace(row[2])
+		}
+
+		// 三列皆为空视为空行，跳过且不计入 total
+		if iccid == "" && msisdn == "" && virtualNo == "" {
+			continue
 		}
 
 		result.TotalCount++
 
-		if iccid == "" && msisdn == "" {
-			continue
-		}
-
 		if iccid == "" {
 			result.ParseErrors = append(result.ParseErrors, CSVParseError{
 				Line:   lineNum,
 				MSISDN: msisdn,
-				Reason: "ICCID不能为空",
+				Reason: "ICCID 不能为空",
 			})
 			continue
 		}
@@ -281,7 +264,16 @@ func parseCardRows(rows [][]string) (*CSVParseResult, error) {
 			result.ParseErrors = append(result.ParseErrors, CSVParseError{
 				Line:   lineNum,
 				ICCID:  iccid,
-				Reason: "MSISDN不能为空",
+				Reason: "MSISDN 不能为空",
+			})
+			continue
+		}
+
+		if virtualNo == "" {
+			result.ParseErrors = append(result.ParseErrors, CSVParseError{
+				Line:  lineNum,
+				ICCID: iccid,
+				Reason: "虚拟号(virtual_no)不能为空",
 			})
 			continue
 		}
@@ -296,68 +288,3 @@ func parseCardRows(rows [][]string) (*CSVParseResult, error) {
 	return result, nil
 }
 
-// findCardColumns 查找ICCID、MSISDN和VirtualNo列索引
-// 支持中英文列名识别
-func findCardColumns(header []string) (iccidCol, msisdnCol, virtualNoCol int) {
-	iccidCol, msisdnCol, virtualNoCol = -1, -1, -1
-
-	for i, col := range header {
-		colLower := strings.ToLower(strings.TrimSpace(col))
-
-		if colLower == "iccid" || colLower == "卡号" || colLower == "号码" {
-			if iccidCol == -1 {
-				iccidCol = i
-			}
-		}
-
-		if colLower == "msisdn" || colLower == "接入号" || colLower == "手机号" || colLower == "电话" {
-			if msisdnCol == -1 {
-				msisdnCol = i
-			}
-		}
-
-		if colLower == "virtual_no" || colLower == "virtualno" || colLower == "虚拟号" || colLower == "设备号" {
-			if virtualNoCol == -1 {
-				virtualNoCol = i
-			}
-		}
-	}
-
-	return iccidCol, msisdnCol, virtualNoCol
-}
-
-// buildDeviceColumnIndex 构建设备导入列索引
-// 识别表头中的列名,返回列名到列索引的映射
-// IMEI 列支持多种列名格式：imei/IMEI/设备IMEI/IMEI号
-func buildDeviceColumnIndex(header []string) map[string]int {
-	index := map[string]int{
-		"virtual_no":    -1,
-		"imei":          -1,
-		"device_name":   -1,
-		"device_model":  -1,
-		"device_type":   -1,
-		"max_sim_slots": -1,
-		"manufacturer":  -1,
-		"iccid_1":       -1,
-		"iccid_2":       -1,
-		"iccid_3":       -1,
-		"iccid_4":       -1,
-	}
-
-	for i, col := range header {
-		normalized := strings.ToLower(strings.TrimSpace(col))
-		// 支持 IMEI 多种列名格式
-		switch normalized {
-		case "imei", "设备imei", "imei号":
-			if index["imei"] == -1 {
-				index["imei"] = i
-			}
-		default:
-			if _, exists := index[normalized]; exists {
-				index[normalized] = i
-			}
-		}
-	}
-
-	return index
-}