Enhance Proxmox VM deployment documentation

- Added a reference to the comprehensive VM Deployment Plan for better deployment strategy understanding.
- Included a quick start guide for deploying infrastructure VMs.
- Emphasized the importance of reviewing the VM Deployment Plan before deployment to optimize resource allocation.
- Updated the documentation index to include the new VM Deployment Plan link for improved navigation.

docs/deployment/DEPLOYMENT_REQUIREMENTS.md

@@ -382,6 +382,9 @@ kubectl apply -f gitops/apps/monitoring/
 
 ### 6.4 Proxmox VM Deployment
 
+**See**: [VM Deployment Plan](../vm/VM_DEPLOYMENT_PLAN.md) for comprehensive deployment strategy, resource allocation, and phased deployment approach.
+
+**Quick Start**:
 ```bash
 # 1. Deploy infrastructure VMs first
 kubectl apply -f examples/production/nginx-proxy-vm.yaml
@@ -397,6 +400,8 @@ kubectl get proxmoxvm -A -w
 kubectl logs -n crossplane-system -l app=crossplane-provider-proxmox --tail=50 -f
 ```
 
+**Important**: Review the [VM Deployment Plan](../vm/VM_DEPLOYMENT_PLAN.md) before deployment to understand resource constraints and optimized allocation strategy.
+
 ### 6.5 GitOps Setup (ArgoCD)
 
 ```bash
@@ -621,6 +626,7 @@ k6 run scripts/k6-load-test.js
 - **[Deployment Plan](./deployment_plan.md)** - Phased rollout plan
 - **[System Architecture](./system_architecture.md)** - Overall architecture
 - **[Hardware BOM](./hardware_bom.md)** - Hardware specifications
+- **[VM Deployment Plan](vm/VM_DEPLOYMENT_PLAN.md)** - Comprehensive VM deployment plan with resource allocation
 - **[VM Specifications](vm/VM_SPECIFICATIONS.md)** - Complete VM specifications and deployment patterns
 - **[VM Creation Procedure](vm/VM_CREATION_PROCEDURE.md)** - Step-by-step VM deployment guide