feat: implement automated VMID discovery for LXC creation

README.md

@@ -37,7 +37,7 @@ export INFRA_CONFIG=$(pwd)/config.yaml
 ### Official Recommended Flow
 1. **Find an IP:** `infra ip next-free`
 2. **Create Database:** `infra db provision "my-project"`
-3. **Provision LXC:** `infra proxmox create-lxc 12xxx debian-13 "my-host" "10.32.70.x/16" "10.32.0.1" --node la-vmh-12`
+3. **Provision LXC:** `infra proxmox create-lxc debian-13 "my-host" "10.32.70.x/16" "10.32.0.1" --node la-vmh-12`
 4. **Setup DNS:** `infra dns add-host <MAC> 10.32.70.x "my-host"`
 5. **Update SSL:** `infra cert renew`
 6. **Expose Ingress:** `infra ingress add "my-project.loopaware.com" 10.32.70.x 80`

infra_cli/main.py

@@ -156,7 +156,7 @@ def proxmox_list_lxcs(config, node):
     click.echo(mgr.list_lxcs())
 
 @proxmox.command(name='create-lxc')
-@click.argument('vmid')
+@click.option('--vmid', help='VMID for the container (auto-discovered if omitted)')
 @click.argument('template')
 @click.argument('hostname')
 @click.argument('ip')
@@ -166,8 +166,18 @@ def proxmox_list_lxcs(config, node):
 @click.pass_obj
 def proxmox_create_lxc(config, vmid, template, hostname, ip, gateway, node, password):
     mgr = ProxmoxManager(config, node)
-    mgr.create_lxc(vmid, template, hostname, ip, gateway, password=password)
-    click.echo(f"LXC {vmid} ({hostname}) created on {mgr.node_name or 'default node'}")
+    
+    target_vmid = vmid
+    if not target_vmid:
+        click.echo("Discovering next available VMID...")
+        target_vmid = mgr.get_next_vmid()
+        if not target_vmid:
+            click.echo("Error: Could not automatically discover next VMID. Please provide one with --vmid", err=True)
+            sys.exit(1)
+    
+    click.echo(f"Using VMID: {target_vmid}")
+    mgr.create_lxc(target_vmid, template, hostname, ip, gateway, password=password)
+    click.echo(f"LXC {target_vmid} ({hostname}) created on {mgr.node_name or 'default node'}")
 
 @cli.group()
 def samba():

infra_cli/proxmox.py

@@ -22,6 +22,14 @@ class ProxmoxManager:
         res = self.client.run(f"pct status {vmid}")
         return res.stdout
 
+    def get_next_vmid(self):
+        """Retrieves the next available cluster-wide VMID from Proxmox"""
+        res = self.client.run("pvesh get /cluster/nextid")
+        if res.returncode == 0 and res.stdout.strip():
+            return res.stdout.strip()
+        # Fallback if pvesh fails (highly unlikely on PVE)
+        return None
+
     def resolve_template(self, alias):
         """Resolves a template alias (e.g. 'debian-13') to the latest full path on the node"""
         if alias == "debian-13":

tests/unit/test_proxmox_logic.py

@@ -31,3 +31,16 @@ def test_storage_discovery(mock_ssh):
     storage = mgr.discover_storage()
     
     assert storage == "local-zfs"
+
+@patch('infra_cli.proxmox.SSHClient')
+def test_vmid_discovery(mock_ssh):
+    mock_instance = mock_ssh.return_value
+    mock_instance.run.return_value.returncode = 0
+    mock_instance.run.return_value.stdout = "105"
+    
+    mgr = ProxmoxManager(MockConfig())
+    vmid = mgr.get_next_vmid()
+    
+    assert vmid == "105"
+    mock_instance.run.assert_called_with("pvesh get /cluster/nextid")
+