docs(architecture): correct infrastructure topology - all nodes are physical servers

- 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.

README.md

@@ -15,10 +15,10 @@
 - **Ansible Automation:** All nodes managed by Ansible from watchtower control plane
 - **Infrastructure as Code:** Services defined in `compose.yaml` + infrastructure managed with Ansible playbooks
 - **GPU Transcoding:** Hardware-accelerated media streaming with NVIDIA GTX 1060 Mobile
-- **Distributed Architecture:** Services across Proxmox hypervisor, VMs, physical servers, and Raspberry Pi
+- **Distributed Architecture:** Services across physical servers with Proxmox hypervisor ready for VM deployment
 - **Self-Hosted Git:** No external dependencies—Gitea runs on-premise with automated backups
 - **Production-Grade Networking:** Traefik reverse proxy with automatic SSL (Cloudflare DNS challenge)
-- **Hypervisor Management:** Proxmox VE for VM orchestration with automated post-install configuration
+- **Hypervisor Management:** Proxmox VE ready for VM orchestration with automated post-install configuration
 
 ---
 
@@ -30,8 +30,7 @@ graph TB
         CF[Cloudflare DNS]
     end
     
-    subgraph "PVE01 - Proxmox VE Hypervisor (10.0.0.201)"
+    subgraph "Heimdall - Physical Server (10.0.0.151)"
-        subgraph "Heimdall VM (10.0.0.151)"
         Traefik[Traefik Reverse Proxy<br/>:80, :443]
         Komodo[Komodo Core<br/>Container Orchestrator]
         Gitea[Gitea<br/>Self-Hosted Git]
@@ -39,7 +38,6 @@ graph TB
         Trek[Trek]
         Vault[Vaultwarden]
     end
-    end
     
     subgraph "Waldorf - Physical Server (10.0.0.251)"
         Plex[Plex Media Server<br/>GPU Transcoding]
@@ -48,12 +46,16 @@ graph TB
         KomodoW[Komodo Periphery]
     end
     
-    subgraph "Watchtower - Raspberry Pi 5 (10.0.0.200)"
+    subgraph "Watchtower - Physical Server (10.0.0.200)"
         Ansible[Ansible Control Node<br/>Infrastructure Automation]
         KomodoP[Komodo Periphery]
         VSCode[VS Code Server]
     end
     
+    subgraph "PVE01 - Physical Server (10.0.0.201)"
+        PVE[Proxmox VE 9.1.7<br/>Hypervisor Platform]
+    end
+    
     subgraph "TerraMaster NAS (10.0.0.250)"
         NFS[NFS Storage<br/>Volume1: /appdata<br/>Volume2: /media]
     end
@@ -68,16 +70,16 @@ graph TB
     Komodo <-->|WebSocket| KomodoP
     Gitea -->|Webhook| Komodo
     
-    Ansible -.->|SSH| PVE01
+    Ansible -.->|SSH| PVE
-    Ansible -.->|SSH| Heimdall
+    Ansible -.->|SSH| Traefik
-    Ansible -.->|SSH| Waldorf
+    Ansible -.->|SSH| Plex
     
     Plex --> GPU
     Tunarr --> GPU
     
-    Heimdall -.->|NFS v4| NFS
+    Traefik -.->|NFS v4| NFS
-    Waldorf -.->|NFS v4| NFS
+    Plex -.->|NFS v4| NFS
-    Watchtower -.->|NFS v3| NFS
+    Ansible -.->|NFS v3| NFS
     
     style NFS fill:#f9a825,color:#000
     style PVE01 fill:#e57000,color:#fff
@@ -89,10 +91,10 @@ graph TB
 
 | Node | IP | Hardware | Platform/OS | Role | Services |
 |------|------|----------|----------|------|----------|
-| **PVE01** | `10.0.0.201` | Physical Server<br/>Intel i5-13500T (14c), 15GB RAM | Proxmox VE 9.1.7 | Hypervisor | Hosts Heimdall VM |
+| **PVE01** | `10.0.0.201` | Physical Server<br/>Intel i5-13500T (14c), 15GB RAM | Proxmox VE 9.1.7 | Hypervisor | VM orchestration platform |
-| **Heimdall** | `10.0.0.151` | Proxmox VM on PVE01<br/>Intel N100 (4c), 15GB RAM | Ubuntu 24.04 | Core Services | Komodo Core, Gitea, Traefik, Redis, Trek, Vaultwarden |
+| **Heimdall** | `10.0.0.151` | Physical Server<br/>Intel N100 (4c), 15GB RAM | Ubuntu 24.04 | Core Services | Komodo Core, Gitea, Traefik, Redis, Trek, Vaultwarden |
 | **Waldorf** | `10.0.0.251` | Physical Server<br/>i7-7820HQ (8c), GTX 1060, 16GB | Ubuntu 24.04 | Media Processing | Plex, Tunarr (GPU transcoding), Komodo Periphery |
-| **Watchtower** | `10.0.0.200` | Raspberry Pi 5<br/>ARM Cortex-A76 (4c), 16GB | Debian Trixie | Control Plane | Ansible, Komodo Periphery, VS Code Server |
+| **Watchtower** | `10.0.0.200` | Physical Server<br/>ARM Cortex-A76 (4c), 16GB | Debian Trixie | Control Plane | Ansible, Komodo Periphery, VS Code Server |
 | **TerraMaster** | `10.0.0.250` | NAS | TOS | Shared Storage | NFS (Volume1: `/appdata`, Volume2: `/media`) |
 
 ---
@@ -201,7 +203,7 @@ homelab/
 │   │   └── proxmox_post_install/ # Nag removal, repo config
 │   └── group_vars/             # Global variables
 ├── nodes/                      # Service definitions per node
-│   ├── heimdall/               # Core infrastructure (VM on PVE01)
+│   ├── heimdall/               # Core infrastructure (Physical)
 │   │   ├── core/               # Komodo, Traefik, Redis
 │   │   ├── trek/               # Trek service
 │   │   ├── vaultwarden/        # Password manager
@@ -323,7 +325,7 @@ environment:
 
 - **Git Repository:** Daily backups via Gitea's built-in backup feature
 - **Docker Volumes:** Weekly snapshots to `/mnt/appdata/backups/`
-- **Proxmox VMs:** Daily snapshots with 7-day retention
+- **Proxmox VMs:** Daily snapshots with 7-day retention (when VMs are deployed)
 - **Configuration Files:** Tracked in Git under `nodes/{hostname}/`
 
 ---
@@ -336,7 +338,7 @@ environment:
 - **Active Services:** 12+ (Traefik, Plex, Tunarr, Gitea, Trek, Vaultwarden, etc.)
 - **Total RAM:** 62GB (15GB PVE01 + 15GB Heimdall + 16GB Waldorf + 16GB Watchtower)
 - **Total CPU Cores:** 30 physical (14c i5-13500T + 8c i7-7820HQ + 4c N100 + 4c ARM)
-- **Virtualization:** Proxmox VE 9.1.7 hosting 1 VM (expandable)
+- **Virtualization:** Proxmox VE 9.1.7 available (no VMs currently deployed)
 - **GPU Acceleration:** NVIDIA GTX 1060 Mobile (6GB VRAM)
 - **Storage:** TerraMaster NAS (NFSv3/v4)