chore: 初始开源发布

iotlcm-openapi：对外 OpenAPI 网关（V3 接口 + 旧版兼容接口）。

- Go module：iotlcm-openapi → git.5iot.com/iotlcm-public/iotlcm-openapi（178 文件）
- 凭据与地址脱敏：JWT signingKey、MySQL DSN、Redis 口令、
  RabbitMQ DSN 全部改为 ${*} 占位；私网 IP → 文档地址段
- 7 处真实手机号 → 合法 11 位编造号
- 启动 banner 统一 IOTLCM 方块字 + 社区惯例署名
- 移除内部资产：CI 触发器
- Dockerfile 改用公共基础镜像，移除 GOPRIVATE 内网设置
- README 重写（原为 GoFrame 模板占位文案），补 Apache-2.0 LICENSE，
  LF 行尾 + .gitattributes

internal/service/common.go

@@ -0,0 +1,41 @@
+package service
+
+import (
+	"context"
+
+	"github.com/gogf/gf/v2/database/gdb"
+
+	"git.5iot.com/iotlcm-public/iotlcm-openapi/internal/model"
+	"git.5iot.com/iotlcm-public/iotlcm-openapi/internal/model/entity"
+)
+
+type (
+	ICommon interface {
+		BuildBatchNo(ctx context.Context, prefix string) (string, error)
+		BuildRenewBatchNo(ctx context.Context) (string, error)
+		SaveBatchMain(ctx context.Context, tx gdb.TX, batch *entity.BatchMain, executionMode int) error
+		SaveBatchDetail(ctx context.Context, tx gdb.TX, detail *entity.BatchDetail) error
+		SaveBatchDetails(ctx context.Context, tx gdb.TX, details []*entity.BatchDetail) error
+		Publish(ctx context.Context, queue string, data any) error
+		SubmitRenew(ctx context.Context, in *model.CommonRenewParam) (*model.CommonRenewRes, error)
+		SubmitSingleRenew(ctx context.Context, card model.CommonRenewCard, appID, packageID, remark string, validity int) (*model.CommonSingleRenewRes, error)
+		SubmitBatchRenew(ctx context.Context, appID string, cards []model.CommonRenewCard, iccids []string, packageID, remark string, validity int) (*model.CommonRenewRes, error)
+		SubmitTrafficCutoffConfig(ctx context.Context, in *model.CommonTrafficCutoffConfigParam) (*model.CommonTrafficCutoffConfigRes, error)
+		SubmitSingleTrafficCutoffConfig(ctx context.Context, in *model.CommonTrafficCutoffSingleParam) (*model.CommonSingleTrafficCutoffRes, error)
+	}
+)
+
+var (
+	localCommon ICommon
+)
+
+func Common() ICommon {
+	if localCommon == nil {
+		panic("implement not found for interface ICommon, forgot register?")
+	}
+	return localCommon
+}
+
+func RegisterCommon(i ICommon) {
+	localCommon = i
+}