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>

hermes-variables.tf

@@ -0,0 +1,53 @@
+variable "hermes_vmid" {
+  description = "VMID for the Hermes Agent LXC"
+  type        = number
+  default     = 118
+}
+
+variable "hermes_hostname" {
+  description = "Hostname for the Hermes Agent LXC"
+  type        = string
+  default     = "hermes"
+}
+
+variable "hermes_node" {
+  description = "Proxmox node to host the Hermes Agent LXC"
+  type        = string
+  default     = "gihyeon"
+}
+
+variable "hermes_cores" {
+  description = "CPU cores for the Hermes Agent LXC"
+  type        = number
+  default     = 2
+}
+
+variable "hermes_memory" {
+  description = "Dedicated memory (MB) for the Hermes Agent LXC"
+  type        = number
+  default     = 4096
+}
+
+variable "hermes_swap" {
+  description = "Swap (MB) for the Hermes Agent LXC"
+  type        = number
+  default     = 512
+}
+
+variable "hermes_disk_size" {
+  description = "Root filesystem size (GB) for the Hermes Agent LXC"
+  type        = number
+  default     = 24
+}
+
+variable "hermes_datastore" {
+  description = "Datastore for the Hermes Agent LXC root filesystem"
+  type        = string
+  default     = "local-lvm"
+}
+
+variable "hermes_network_bridge" {
+  description = "Network bridge (SDN VNET) for the Hermes Agent LXC"
+  type        = string
+  default     = "intra01"
+}