- proxmox_collector: support numbered PVE_HOST_1/2/3 env vars with
backward compat for legacy single PVE_HOST; fix MTU string-to-int cast
- pbs_collector: new collector for Proxmox Backup Server — discovers
devices, interfaces, IPs, and datastores (as Services) via PBS API
- vmware_collector: fix mac_address → primary_mac_address for Diode SDK
- network_collector: add Netmiko SSH fallback for Brocade/NOS devices,
add Brocade ICX interface type patterns
- unifi_collector: new collector for UniFi UDM-SE/switches/APs
- ENV_REFERENCE.md: document all collector env vars and setup steps
- .gitignore: exclude collectors/inventory.yaml (contains credentials)
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
