- Implement list_evpn_zones with full zone configuration parsing
- Implement create_evpn_zone, update_evpn_zone, delete_evpn_zone
- Implement list_vnets with full virtual network configuration
- Implement create_vnet, update_vnet, delete_vnet
- Implement get_vnet_status and list_dhcp_leases
- All operations use proper error handling with Option safety
- Add 2 unit tests for EVPN zone and virtual network serialization
- Add proxmox module with client, cluster, and resource management
- Implement VM management stubs with full API documentation
- Add database migrations for proxmox_clusters and proxmox_resources tables
- Implement IPC commands for cluster CRUD operations
- Add Proxmox state management to AppState
- Create 22 unit tests for Proxmox modules (all passing)
- Update lib.rs, state.rs, and integrations.rs for Proxmox integration
