Fix command execution in network.send_wol to handle return values correctly.

scripts/network.lua

@@ -148,8 +148,9 @@ function network.send_wol(mac_str, bcast_ip, port)
   if not network.is_socket_available() then
     utils.log("Socket module not available, using external wol tool")
     local cmd = string.format("wol -i %s -p %d %s", bcast_ip, port, mac_str)
-    local result = os.execute(cmd)
-    return result == 0, result ~= 0 and "wol command failed" or nil
+    local ok, reason, code = os.execute(cmd)
+    return ok and reason == "exit" and code == 0,
+        (not ok or reason ~= "exit" or code ~= 0) and "wol command failed" or nil
   end
 
   -- Create IPv4 UDP socket (udp4 if available), bind to IPv4 wildcard to lock AF_INET