scripts: refresh-proxmox-info.sh wrapper for PVE snapshots

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.

README.md

@@ -37,6 +37,7 @@ Per-host snapshots of the running system live under `servers/<host>/system-detai
 │   ├── server_inspect.sh         # read-only diagnostic, runs on remote via stdin
 │   ├── proxmox_inspect.sh        # Proxmox-aware probe (VMs, LXCs, storage, backup coverage)
 │   ├── refresh-server-info.sh    # pull fresh system-details.txt for one/all hosts
+│   ├── refresh-proxmox-info.sh   # pull fresh proxmox-details.txt for one/all PVE nodes
 │   ├── add-host.sh               # register a new server (writes servers/<name>/ssh-target)
 │   ├── sync-stacks.sh            # pull /opt/docker/{compose,conf}/ → stacks-mirror/
 │   └── deploy-stack.sh           # push stacks-mirror/<host>/<stack>/ with diff + prompt
@@ -96,6 +97,11 @@ scripts/refresh-server-info.sh ana-docker
 scripts/refresh-server-info.sh all
 ```
 
+**Refresh all Proxmox nodes (separate flow — captures VM/LXC/backup-coverage):**
+```bash
+scripts/refresh-proxmox-info.sh all
+```
+
 **Add a new host:**
 ```bash
 scripts/add-host.sh <name> <ip-or-user@ip>