* build: create home folders as 0755 on Debian 12
* build: add bash
* fix: add --shell /bin/bash to user creation
* copy the skeleton files for users with login
* update workflows
* jam-remote update to v0.1.6
* amd64 image update to debian-12.2.0, clean vars
* add files to install jam to connect remotely
* update jam and nginx conf
* use ${USERNAME} consistently
* jam update to v0.1.1
* use dergigi's pubkey to verify
* docs update