feat ✨: Add support for Wake-on-LAN

Enables Wake-on-LAN by setting `wol_interface` to an empty string and enables MAC address reporting.

README.md

@@ -11,12 +11,17 @@ This Ansible role enables persistent Wake-on-LAN (WOL) on a Proxmox VE server.
 | wol_verify | true | Verify WOL status |
 
 
-## Requirements
+## Notes for Proxmox admins
 
-Use the physical NIC, not vmbr0, unless your NIC supports WOL through the bridge
-Common interfaces:  eno1, enp3s0, eth0
-Verify BIOS/UEFI:   Enable Wake on LAN
-Disable ErP / Deep Sleep
+Auto-detection works best when:
+    The management IP uses the physical NIC
+    You are not routing management via vmbr0 only
+
+If your default route is on vmbr0, manual override is recommended
+
+BIOS must still have:
+    Wake on LAN enabled
+    ErP disabled
 
 ## Example Playbook
 
@@ -26,4 +31,4 @@ Disable ErP / Deep Sleep
   roles:
     - role: ansible_proxmox_WOL
       vars:
-        wol_interface: vmbr0
+        wol_interface: vmbr0    # Optional, comment for autodetection