autofs: Mount a Team Share and an Archive Image on Demand

Users keep opening two locations, and neither should be mounted all the time:

/shares/projects is the team directory /srv/exports/projects (read-write)

/shares/archive is the ext4 image /srv/images/archive-2025q3.img (read-only)

Set both up with autofs under an indirect map for /shares. Each mount should appear the moment someone uses the path and go away after 30 seconds idle, and the configuration has to live in files so it comes back when autofs restarts. The ticket is in /root/case/brief.txt.

This box has no systemd, so start or restart the daemon with service autofs start (on a real host you would use systemctl enable --now autofs). Grading drops a fresh file into the team directory and reads it back through /shares/projects, reads the archive's contents, and dumps the configured maps with automount -m.