feat(proxmox): enhance VM resource tracking with auto-discovery and cached IPs

- Add VMResource wrapper type with cached IP addresses for efficient lookups
- Implement concurrent IP fetching during resource updates (limited concurrency)
- Add ReverseLookupResource for discovering VMs by IP, hostname, or alias
- Prioritize interfaces API over config for IP retrieval (offline container fallback)
- Enable routes to auto-discover Proxmox resources when no explicit config provided
- Fix configuration type from value to pointer slice for correct proxmox client retrievel
- Ensure Proxmox providers are initialized before route validation

internal/proxmox/node.go

@@ -12,6 +12,7 @@ import (
 type NodeConfig struct {
 	Node    string `json:"node" validate:"required"`
 	VMID    int    `json:"vmid" validate:"required"`
+	VMName  string `json:"vmname,omitempty"`
 	Service string `json:"service,omitempty"`
 } // @name ProxmoxNodeConfig
 
@@ -54,6 +55,10 @@ func (n *Node) Name() string {
 	return n.name
 }
 
+func (n *Node) Client() *Client {
+	return n.client
+}
+
 func (n *Node) String() string {
 	return fmt.Sprintf("%s (%s)", n.name, n.id)
 }