refactor: 重构trustlog-sdk目录结构到trustlog/go-trustlog

- 将所有trustlog-sdk文件移动到trustlog/go-trustlog/目录
- 更新README中所有import路径从trustlog-sdk改为go-trustlog
- 更新cookiecutter配置文件中的项目名称
- 更新根目录.lefthook.yml以引用新位置的配置
- 添加go.sum文件到版本控制
- 删除过时的示例文件

这次重构与trustlog-server保持一致的目录结构，
为未来支持多语言SDK（Python、Java等）预留空间。

api/highclient/client.go

@@ -0,0 +1,156 @@
+package highclient
+
+import (
+	"errors"
+	"fmt"
+
+	"github.com/ThreeDotsLabs/watermill/message"
+
+	"go.yandata.net/iod/iod/trustlog-sdk/api/adapter"
+	"go.yandata.net/iod/iod/trustlog-sdk/api/logger"
+	"go.yandata.net/iod/iod/trustlog-sdk/api/model"
+)
+
+type Client struct {
+	publisher      message.Publisher
+	logger         logger.Logger
+	envelopeConfig model.EnvelopeConfig
+}
+
+// NewClient 创建HighClient,使用Envelope序列化方式.
+// publisher可以使用任意（包含forwarder）创建的publisher,但是我们所有的订阅者必须可以处理Envelope格式的消息.
+// 参数:
+//   - publisher: 消息发布器
+//   - logger: 日志记录器
+//   - envelopeConfig: SM2密钥配置,用于签名和序列化
+func NewClient(publisher message.Publisher, logger logger.Logger, envelopeConfig model.EnvelopeConfig) *Client {
+	return &Client{
+		publisher:      publisher,
+		logger:         logger,
+		envelopeConfig: envelopeConfig,
+	}
+}
+
+func (c *Client) GetLow() message.Publisher {
+	return c.publisher
+}
+
+func (c *Client) OperationPublish(operation *model.Operation) error {
+	if operation == nil {
+		c.logger.Error("operation publish failed: operation is nil")
+		return errors.New("operation cannot be nil")
+	}
+
+	c.logger.Debug("publishing operation",
+		"opID", operation.OpID,
+		"opType", operation.OpType,
+		"doPrefix", operation.DoPrefix,
+	)
+
+	err := publish(operation, adapter.OperationTopic, c.publisher, c.envelopeConfig, c.logger)
+	if err != nil {
+		c.logger.Error("operation publish failed",
+			"opID", operation.OpID,
+			"error", err,
+		)
+		return err
+	}
+
+	c.logger.Info("operation published successfully",
+		"opID", operation.OpID,
+		"opType", operation.OpType,
+	)
+	return nil
+}
+
+func (c *Client) RecordPublish(record *model.Record) error {
+	if record == nil {
+		c.logger.Error("record publish failed: record is nil")
+		return errors.New("record cannot be nil")
+	}
+
+	c.logger.Debug("publishing record",
+		"recordID", record.ID,
+		"rcType", record.RCType,
+		"doPrefix", record.DoPrefix,
+	)
+
+	err := publish(record, adapter.RecordTopic, c.publisher, c.envelopeConfig, c.logger)
+	if err != nil {
+		c.logger.Error("record publish failed",
+			"recordID", record.ID,
+			"error", err,
+		)
+		return err
+	}
+
+	c.logger.Info("record published successfully",
+		"recordID", record.ID,
+		"rcType", record.RCType,
+	)
+	return nil
+}
+
+func (c *Client) Close() error {
+	c.logger.Info("closing high client")
+	err := c.publisher.Close()
+	if err != nil {
+		c.logger.Error("failed to close publisher", "error", err)
+		return err
+	}
+	c.logger.Info("high client closed successfully")
+	return nil
+}
+
+// publish 通用的发布函数，支持任何实现了 Trustlog 接口的类型。
+// 使用 Envelope 格式序列化并发布到指定 topic。
+func publish(
+	data model.Trustlog,
+	topic string,
+	publisher message.Publisher,
+	config model.EnvelopeConfig,
+	logger logger.Logger,
+) error {
+	messageKey := data.Key()
+
+	logger.Debug("starting envelope serialization",
+		"messageKey", messageKey,
+		"topic", topic,
+	)
+
+	// 使用 Envelope 序列化（MarshalTrustlog 会自动提取 producerID）
+	envelopeData, err := model.MarshalTrustlog(data, config)
+	if err != nil {
+		logger.Error("envelope serialization failed",
+			"messageKey", messageKey,
+			"error", err,
+		)
+		return fmt.Errorf("failed to marshal envelope: %w", err)
+	}
+
+	logger.Debug("envelope serialized successfully",
+		"messageKey", messageKey,
+		"envelopeSize", len(envelopeData),
+	)
+
+	msg := message.NewMessage(messageKey, envelopeData)
+	logger.Debug("publishing message to topic",
+		"messageKey", messageKey,
+		"topic", topic,
+	)
+
+	if publishErr := publisher.Publish(topic, msg); publishErr != nil {
+		logger.Error("failed to publish to topic",
+			"messageKey", messageKey,
+			"topic", topic,
+			"error", publishErr,
+		)
+		return fmt.Errorf("failed to publish message to topic %s: %w", topic, publishErr)
+	}
+
+	logger.Debug("message published to topic successfully",
+		"messageKey", messageKey,
+		"topic", topic,
+	)
+	return nil
+}