update ssh-agent.sh

update README.md

update checker public ip

git-sync: update actions

Add sync to sourcehut

workflows: add git sync

Relax ssh-agent, add support days to sagent_start, like `sagent_start 1d`

update _custom.sh

update URLs

Add workflow and fix issues

update

install.sh: check requirements

README_es.md update

README.md update

update domain

prepare re-compatibility with another OS unix-like

Add drone file

Fix unused variable ___upstream

fix hostname: Unknown host

compress: standard commands