Parallel to refresh-server-info.sh but pipes proxmox_inspect.sh and writes
to servers/<host>/proxmox-details.txt. Same discovery / ssh-target /
validate-only / dry-run behavior.
Fleet-wide `all` matches dir names containing `-pve` (covers *-pve and
*-pve-* so esh-pve-nas is included alongside pfi-pve / nh3-pve / esh-pve).
Explicit names are never filtered — useful for one-off PVE hosts with
non-matching names.
Validation checks the captured snapshot for: truncation, missing PVE
version line, non-Proxmox target, and surfaces backup-coverage "NO"
verdict counts so gaps show up in the validate-only output.
Initial fleet snapshot refreshed.
