bug fix: prevent empty username

fix cors

unignore env for public api visiblity

modify to use env base api uri

modify to use env base api uri

add env

update readme

change metadata for title. add license and learn md

update readme with prod link

fix typo in ulr

update domain for share links

change ws to wss ip

change http server ip to https

update ip to cloud vm for both http and ws

update readme