Blancco boot configs: update IP from 10.9.100.1 to 172.16.9.1

grub-blancco.cfg was still referencing the old PXE LAN IP for kernel,
initrd, and archiso_http_srv. Also synced repo copy to match the live
BDE-kernel TFTP-based config. Updated iPXE scripts (blancco.ipxe,
blancco-debug.ipxe, blancco-chain.ipxe) for the same IP change.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

boot-tools/blancco/blancco-debug.ipxe

@@ -0,0 +1,48 @@
+#!ipxe
+
+echo =============================================
+echo  Blancco PXE Debug Boot
+echo =============================================
+echo
+
+echo [1/4] Network configuration...
+dhcp || echo DHCP FAILED
+echo   MAC:  ${net0/mac}
+echo   IP:   ${net0/ip}
+echo   GW:   ${net0/gateway}
+echo   DNS:  ${net0/dns}
+echo
+
+set server 172.16.9.1
+
+echo [2/4] Testing HTTP connectivity...
+imgfetch --name test http://${server}/blancco/config.img || echo HTTP FETCH FAILED
+imgfree test
+echo   HTTP to ${server}: OK
+echo
+
+echo [3/4] Loading kernel and initrd...
+echo   Fetching vmlinuz-bde-linux...
+kernel http://${server}/blancco/vmlinuz-bde-linux initrd=initrd-combined.img archisobasedir=arch archiso_http_srv=http://${server}/blancco/ copytoram=y cow_spacesize=50% memtest=00 vmalloc=400M ip=dhcp libata.allow_tpm=1 modprobe.blacklist=iwlwifi,iwlmvm,btusb rd.udev.timeout=10 || goto failed
+echo   Kernel loaded OK.
+echo
+echo   Fetching initrd-combined.img (43MB, may take a moment)...
+initrd http://${server}/blancco/initrd-combined.img || goto failed
+echo   Initrd loaded OK.
+echo
+
+echo [4/4] About to call boot command...
+echo
+echo !! Note the LAST kernel line visible before any freeze !!
+echo
+prompt Press any key to boot (or Ctrl-C for iPXE shell)... && goto doboot || shell
+
+:doboot
+boot || goto failed
+
+:failed
+echo
+echo !! BOOT FAILED !!
+echo
+prompt Press any key for iPXE shell...
+shell