Fix build for legacy (#4189)

feat: Support encode for sftp, improve bookmark form, put encode/ENV:…

…LANG together (#4181)

UI: Make active tab more obvious

UX: now turn on sftp follow terminal path, would update sftp path rig…

…ht away

Version bump -> 2.5.6

#4171 Fix can not login to with some rsa key issue

Fix enter key behavior in modal

Fix terminal stuck issue

[experimental] Add TCP keep alive in ssh2 lib

Quick bug fix: fix missing bookmark form tabs