fix: code quality improvements

- Remove duplicate variables (alpaca_count, llama_count)
- Remove unused variables (vm_name, disk_type)
- Fix outputs to use correct variable names
- Fix cloud-init template to not overwrite source file
- Fix hardcoded hostname in cloud-init template
- Fix typo in SSH_KEY_PUBLIC description

terraform/outputs.tf

@@ -1,6 +1,6 @@
 output "alpaca_vm_ids" {
   value = {
-    for i in range(var.alpaca_count) :
+    for i in range(var.alpaca_vm_count) :
     "alpaca-${i + 1}" => proxmox_vm_qemu.alpacas[i].vmid
   }
 }
@@ -11,7 +11,7 @@ output "alpaca_vm_names" {
 
 output "llama_vm_ids" {
   value = {
-    for i in range(var.llama_count) :
+    for i in range(var.llama_vm_count) :
     "llama-${i + 1}" => proxmox_vm_qemu.llamas[i].vmid
   }
 }
@@ -19,4 +19,3 @@ output "llama_vm_ids" {
 output "llama_vm_names" {
   value = [for vm in proxmox_vm_qemu.llamas : vm.name]
 }
-