chore: 初始开源发布

iotlcm-sms：独立短信 HTTP/gRPC 服务，支持阿里云与腾讯云。

- Go module 迁移至 git.5iot.com/iotlcm-public/iotlcm-sms
- 补 Apache-2.0 LICENSE，重写 README（特性/配置/接口/部署/目录/测试）
- 配置改为 config.example.yaml + SMS_* 环境变量注入，仓库不含真实凭证
- 清理内部标识（私有镜像仓库 / 公司名 / 客户签名 / 真实模板ID / 真实手机号）
- 统一 LF 行尾并加 .gitattributes

tools/list_aliyun_templates/main.go

@@ -0,0 +1,40 @@
+package main
+
+import (
+	"fmt"
+	"log"
+	"os"
+
+	"github.com/aliyun/alibaba-cloud-sdk-go/sdk/requests"
+	"github.com/aliyun/alibaba-cloud-sdk-go/services/dysmsapi"
+)
+
+func main() {
+	keyID := os.Getenv("ALIYUN_ACCESS_KEY_ID")
+	keySecret := os.Getenv("ALIYUN_ACCESS_KEY_SECRET")
+	if keyID == "" || keySecret == "" {
+		log.Fatal("ALIYUN_ACCESS_KEY_ID and ALIYUN_ACCESS_KEY_SECRET are required")
+	}
+	region := os.Getenv("ALIYUN_REGION_ID")
+	if region == "" {
+		region = "cn-hangzhou"
+	}
+
+	client, err := dysmsapi.NewClientWithAccessKey(region, keyID, keySecret)
+	if err != nil {
+		log.Fatal(err)
+	}
+	request := dysmsapi.CreateQuerySmsTemplateListRequest()
+	request.PageIndex = requests.NewInteger(1)
+	request.PageSize = requests.NewInteger(50)
+	response, err := client.QuerySmsTemplateList(request)
+	if err != nil {
+		log.Fatal(err)
+	}
+	if response.Code != "OK" {
+		log.Fatalf("query failed: code=%s message=%s", response.Code, response.Message)
+	}
+	for _, template := range response.SmsTemplateList {
+		fmt.Printf("%s\t%s\t%s\t%s\n", template.TemplateCode, template.AuditStatus, template.TemplateName, template.TemplateContent)
+	}
+}