chore: 初始开源发布

iotlcm-upstream-proxy：渠道缓存与转发网关。

- 内联原私有依赖：yunze-public → internal/pub/（18 文件），
  yunze-pb/pb → internal/pb/（9 文件）；Consul 注册改用官方
  gogf/gf/contrib/registry/consul/v2（API 兼容）
- Go module：yz-svr → git.5iot.com/iotlcm-public/iotlcm-upstream-proxy
- 凭据与内部标识脱敏：MySQL/Redis/Consul 凭据、私网与生产 IP、内网域名
- 移除内部资产：CI 触发器
- Dockerfile 改用公共基础镜像，移除写死的 registry 凭据
- 补 Apache-2.0 LICENSE，重写 README，LF 行尾 + .gitattributes

internal/model/sim_card_channel.go

@@ -0,0 +1,43 @@
+package model
+
+import (
+	"context"
+	"git.5iot.com/iotlcm-public/iotlcm-upstream-proxy/internal/model/entity"
+
+	"github.com/gogf/gf/v2/os/gtime"
+)
+
+type SimChannelConfigItemCache struct {
+	Template *entity.TSimChannelTemplate
+	Channel  *entity.TSimChannels
+	IsNormal *int // global_yes_or_no: 0=yes, 1=no; NULL is not eligible.
+	Version  string
+}
+
+// CanCreateInstance determines whether a channel may have a runtime instance.
+func (c *SimChannelConfigItemCache) CanCreateInstance() bool {
+	return c != nil && c.Channel != nil && c.IsNormal != nil && *c.IsNormal == 0
+}
+
+type SimCardTempI interface {
+	NewTemp(ctx context.Context, channelConfig *SimChannelConfigItemCache) SimCardChannelI
+}
+
+// 接口定义
+type SimCardChannelI interface {
+	SimBase(ctx context.Context, input *SimBaseReqJson) (SimBaseResJson, error)
+}
+
+type SimCardChannelCache struct {
+	Instance SimCardChannelI
+	Version  string
+}
+
+type UpdateAccessTokenInput struct {
+	ChanKey            string
+	AccessToken        string
+	AccessTokenCreated *gtime.Time
+	AccessTokenExpire  *gtime.Time
+	RefreshToken       string
+	RefreshTokenExpire *gtime.Time
+}