feat: rename 'ZenithOS' => 'MontaukOS' and fix build system issues

programs/man/init.1

@@ -1,12 +1,12 @@
 .TH INIT 1
 .SH NAME
-    init - ZenithOS init system
+    init - MontaukOS init system
 
 .SH SYNOPSIS
     Spawned automatically by the kernel as PID 0.
 
 .SH DESCRIPTION
-    init is the first userspace process started by the ZenithOS
+    init is the first userspace process started by the MontaukOS
     kernel. It chains system services in sequence, then launches
     the interactive shell.