重构：模块重命名 u-desk，更新所有依赖到最新版本

internal/service/connection_service.go

@@ -3,10 +3,10 @@ package service
 import (
 	"encoding/json"
 	"fmt"
-	"go-desk/internal/crypto"
-	"go-desk/internal/dbclient"
-	"go-desk/internal/storage/models"
-	"go-desk/internal/storage/repository"
+	"u-desk/internal/crypto"
+	"u-desk/internal/dbclient"
+	"u-desk/internal/storage/models"
+	"u-desk/internal/storage/repository"
 )
 
 // ConnectionService 连接管理服务