ix init script duplication and CPIO creation issues

- Remove duplicate /sbin/init copying from initramfs_setup_zinit()
- Only /init should be config/init (initramfs setup script)
- No /sbin/init needed - config/init calls 'switch_root /mnt/root /sbin/zinit init'
- Remove unsupported cpio --owner option that broke CPIO creation
- Fix validation to not expect /sbin/init file
- Correct boot flow: /init → switch_root → /sbin/zinit init
- Remove strip and UPX compression from zinit binary copying
- UPX compression was corrupting the zinit binary causing segfaults after switch_root
- Keep zinit unmodified as it's

configs/init

@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/sh -x
 # Alpine-based Zero-OS Init Script
 # Maintains identical flow to original busybox version
 
@@ -8,6 +8,8 @@ echo "==       ZERO-OS ALPINE INITRAMFS        =="
 echo "============================================"
 
 echo "[+] creating ram filesystem"
+target="/mnt/root"
+mkdir -p $target
 mount -t proc proc /proc
 mount -t sysfs sysfs /sys
 mount -t tmpfs tmpfs /mnt/root -o size=1536M
@@ -100,4 +102,6 @@ fi
 
 echo "[+] switching root"
 echo "  exec switch_root /mnt/root /sbin/zinit init"
-exec switch_root /mnt/root /sbin/zinit init
+exec switch_root /mnt/root /sbin/zinit init
+
+##