- Updated mermaid diagram to show Heimdall as standalone physical server (10.0.0.151)
- Removed nested VM structure incorrectly showing Heimdall inside PVE01 hypervisor
- Corrected infrastructure inventory table: Heimdall listed as "Physical Server" with Intel N100
- Updated Watchtower label from "Raspberry Pi 5" to "Physical Server" for consistency
- Clarified PVE01 role as hypervisor platform with no VMs currently deployed
- Updated repository structure comment: heimdall/ marked as "Physical" not "VM on PVE01"
- Adjusted stats section: "Proxmox VE 9.1.7 available (no VMs currently deployed)"
- Added qualifier to backup strategy: Proxmox VM snapshots only apply when VMs exist
Context: User clarified that all infrastructure nodes (heimdall, waldorf, watchtower,
pve01) are physical servers. Previous documentation incorrectly represented Heimdall
as a VM hosted on the PVE01 hypervisor, when it is actually a standalone physical
server running Ubuntu 24.04.
