When Proxmox guest-agent IPs are empty and SSH discovery returns duplicate generic hostnames (e.g. flex), assign remaining missing nodes from unmatched SSH-reachable IPs in deterministic order. Also emit SSH-reachable IP diagnostics on failure.
Exclude the configured VIP suffix from subnet scans and prefer non-VIP IPs when multiple SSH endpoints resolve to the same node. This prevents cp-1 being discovered as .250 and later failing SSH commands against the floating VIP.
Some freshly cloned VMs still report template/generic hostnames during discovery. Probe DMI product serial over SSH and map it to Terraform VMIDs so cp-2/cp-3/wk-2 can be resolved even before hostname reconciliation.
Increase default SSH timeout, reduce scan concurrency, and add a second slower scan pass to avoid transient misses on busy runners. Also print discovered hostnames to improve failure diagnostics when node-name matching fails.
