feat: add Hermes Agent LXC terraform config

Defines Hermes Agent LXC (VMID 118) on node gihyeon with 2 cores,
4 GB RAM, 24 GB disk, DHCP on intra01. Token-safe: nesting/keyctl
features and bind mounts are intentionally omitted and must be
applied via pct set after initial deploy.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

outputs.tf

@@ -7,3 +7,13 @@ output "pbs_ip_address" {
   description = "PBS LXC IP address"
   value       = var.pbs_ip_address
 }
+
+output "hermes_container_id" {
+  description = "Hermes Agent LXC container ID"
+  value       = proxmox_virtual_environment_container.hermes.vm_id
+}
+
+output "hermes_hostname" {
+  description = "Hermes Agent LXC hostname (IP is DHCP-assigned; discover via PVE/API)"
+  value       = var.hermes_hostname
+}