A filesystem browser for stopped containers

Browse, read, and search container files with cardinal fs — even after stop.

The cardinal fs family makes the container filesystem a first-class citizen:

cardinal fs ls web /etc/nginx
cardinal fs cat web /etc/nginx/conf.d/default.conf
cardinal fs tree mc-server /data --max-depth 2
cardinal fs find web --name "*.conf" --grep "server_name"

Because the overlay stays mounted after cardinal stop, you can inspect files

in a stopped container without a shell — perfect for debugging a config

that broke startup.

This release also solidifies --healthcheck-* auto-restart and the --startup

script flag with CARDINAL_* environment injection.