chore: update dependencies and improve bot configuration

- Upgrade Go version to 1.24.0 and update toolchain.
- Update various dependencies in go.mod and go.sum, including:
  - Upgrade `fasthttp/websocket` to v1.5.12
  - Upgrade `fsnotify/fsnotify` to v1.9.0
  - Upgrade `valyala/fasthttp` to v1.58.0
  - Add new dependencies for `bytedance/sonic` and `google/uuid`.
- Refactor bot configuration in config.toml to support multiple bot protocols, including "milky" and "onebot11".
- Modify internal configuration structures to accommodate new bot settings.
- Enhance event dispatcher with metrics tracking and asynchronous processing capabilities.
- Implement WebSocket connection management with heartbeat and reconnection logic.
- Update server handling for bot management and event publishing.

internal/plugins/echo/echo.go

@@ -0,0 +1,137 @@
+package echo
+
+import (
+	"context"
+
+	"cellbot/internal/protocol"
+
+	"go.uber.org/zap"
+)
+
+// EchoPlugin 回声插件
+type EchoPlugin struct {
+	logger     *zap.Logger
+	botManager *protocol.BotManager
+}
+
+// NewEchoPlugin 创建回声插件
+func NewEchoPlugin(logger *zap.Logger, botManager *protocol.BotManager) *EchoPlugin {
+	return &EchoPlugin{
+		logger:     logger.Named("echo-plugin"),
+		botManager: botManager,
+	}
+}
+
+// Handle 处理事件
+func (p *EchoPlugin) Handle(ctx context.Context, event protocol.Event) error {
+	// 获取事件数据
+	data := event.GetData()
+
+	// 获取消息内容
+	message, ok := data["message"]
+	if !ok {
+		p.logger.Debug("No message field in event")
+		return nil
+	}
+
+	rawMessage, ok := data["raw_message"].(string)
+	if !ok {
+		p.logger.Debug("No raw_message field in event")
+		return nil
+	}
+
+	// 获取用户ID
+	userID, ok := data["user_id"]
+	if !ok {
+		p.logger.Debug("No user_id field in event")
+		return nil
+	}
+
+	p.logger.Info("Received private message",
+		zap.Any("user_id", userID),
+		zap.String("message", rawMessage))
+
+	// 获取 self_id 来确定是哪个 bot
+	selfID := event.GetSelfID()
+
+	// 获取对应的 bot 实例
+	bot, ok := p.botManager.Get(selfID)
+	if !ok {
+		// 如果通过 selfID 找不到，尝试获取第一个 bot
+		bots := p.botManager.GetAll()
+		if len(bots) == 0 {
+			p.logger.Error("No bot instance available")
+			return nil
+		}
+		bot = bots[0]
+		p.logger.Debug("Using first available bot",
+			zap.String("bot_id", bot.GetID()))
+	}
+
+	// 构建回复动作
+	action := &protocol.BaseAction{
+		Type: protocol.ActionTypeSendPrivateMessage,
+		Params: map[string]interface{}{
+			"user_id": userID,
+			"message": message, // 原封不动返回消息
+		},
+	}
+
+	p.logger.Info("Sending echo reply",
+		zap.Any("user_id", userID),
+		zap.String("reply", rawMessage))
+
+	// 发送消息
+	result, err := bot.SendAction(ctx, action)
+	if err != nil {
+		p.logger.Error("Failed to send echo reply",
+			zap.Error(err),
+			zap.Any("user_id", userID))
+		return err
+	}
+
+	p.logger.Info("Echo reply sent successfully",
+		zap.Any("user_id", userID),
+		zap.Any("result", result))
+
+	return nil
+}
+
+// Priority 获取处理器优先级
+func (p *EchoPlugin) Priority() int {
+	return 100 // 中等优先级
+}
+
+// Match 判断是否匹配事件
+func (p *EchoPlugin) Match(event protocol.Event) bool {
+	// 只处理私聊消息
+	eventType := event.GetType()
+	detailType := event.GetDetailType()
+
+	p.logger.Debug("Echo plugin matching event",
+		zap.String("event_type", string(eventType)),
+		zap.String("detail_type", detailType))
+
+	if eventType != protocol.EventTypeMessage {
+		p.logger.Debug("Event type mismatch", zap.String("expected", string(protocol.EventTypeMessage)))
+		return false
+	}
+
+	if detailType != "private" {
+		p.logger.Debug("Detail type mismatch", zap.String("expected", "private"), zap.String("got", detailType))
+		return false
+	}
+
+	p.logger.Info("Echo plugin matched event!")
+	return true
+}
+
+// Name 获取插件名称
+func (p *EchoPlugin) Name() string {
+	return "Echo"
+}
+
+// Description 获取插件描述
+func (p *EchoPlugin) Description() string {
+	return "回声插件：将私聊消息原封不动返回"
+}