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

internal/httpapi/handler_test.go

@@ -0,0 +1,77 @@
+package httpapi
+
+import (
+	"context"
+	"encoding/json"
+	"errors"
+	"net/http"
+	"net/http/httptest"
+	"strings"
+	"testing"
+
+	"git.5iot.com/iotlcm-public/iotlcm-sms/internal/sms"
+)
+
+type fakeSender struct {
+	config  sms.Config
+	message sms.Message
+	result  sms.Result
+	err     error
+}
+
+func (f *fakeSender) Send(_ context.Context, config sms.Config, message sms.Message) (sms.Result, error) {
+	f.config = config
+	f.message = message
+	return f.result, f.err
+}
+
+func TestSendSuccess(t *testing.T) {
+	fake := &fakeSender{result: sms.Result{Code: 0, Message: "发送成功"}}
+	server := httptest.NewServer(NewHandler(fake))
+	defer server.Close()
+
+	body := `{"config":{"serviceType":"1","accessKeyId":"id","accessKeySecret":"secret","signName":"测试签名","templateId":"SMS_1"},"params":{"phoneNumber":"138****8000","msgContent":"{\"code\":\"123456\"}"}}`
+	response, err := http.Post(server.URL+"/api/v1/sms/send", "application/json", strings.NewReader(body))
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer response.Body.Close()
+
+	if response.StatusCode != http.StatusOK {
+		t.Fatalf("status = %d, want %d", response.StatusCode, http.StatusOK)
+	}
+	if fake.config.ServiceType != sms.ServiceAliyun || fake.message.PhoneNumber != "138****8000" {
+		t.Fatalf("unexpected request: config=%+v message=%+v", fake.config, fake.message)
+	}
+}
+
+func TestSendRejectsInvalidJSON(t *testing.T) {
+	request := httptest.NewRequest(http.MethodPost, "/api/v1/sms/send", strings.NewReader(`{"unknown":true}`))
+	recorder := httptest.NewRecorder()
+	NewHandler(&fakeSender{}).ServeHTTP(recorder, request)
+
+	if recorder.Code != http.StatusBadRequest {
+		t.Fatalf("status = %d, want %d", recorder.Code, http.StatusBadRequest)
+	}
+}
+
+func TestSendMapsProviderError(t *testing.T) {
+	fake := &fakeSender{
+		result: sms.Result{Code: 502, Message: "provider failed"},
+		err:    errors.New("provider failed"),
+	}
+	request := httptest.NewRequest(http.MethodPost, "/api/v1/sms/send", strings.NewReader(`{"config":{},"params":{}}`))
+	recorder := httptest.NewRecorder()
+	NewHandler(fake).ServeHTTP(recorder, request)
+
+	if recorder.Code != http.StatusBadGateway {
+		t.Fatalf("status = %d, want %d", recorder.Code, http.StatusBadGateway)
+	}
+	var result sms.Result
+	if err := json.NewDecoder(recorder.Body).Decode(&result); err != nil {
+		t.Fatal(err)
+	}
+	if result.Code != 502 {
+		t.Fatalf("code = %d, want 502", result.Code)
+	}
+}