Add per-model OptiPlex kickstart variants from live Cobbler

The seed almalinux9 kickstart reconstructed the Cobbler contract from memory
and guessed storage: it installed to sda with autopart and keyboard us. The
real Cobbler server (cobbler.main.unkin.net) provisions the OptiPlex fleet from
three model-specific profiles (almalinux9-dell_3050 / _3060 / _7080) that all
install to NVMe with an explicit LVM layout and differ in disk selection, EFI
handling and whether the VG grows. This folds that real content in, keeping one
shared template driven by per-model catalog data.

Changes:
- Make almalinux9.ks.tmpl storage model-aware via .DistroVars.storage_mode:
  fixed-nvme (static nvme0n1, BIOS/MBR), auto-nvme (%pre picks the internal
  NVMe, UEFI-aware, --boot-drive), with vg_grow to grow the PV; generic/VM
  hosts keep the autopart-on-sda path.
- Port the explicit LVM layout (/boot, root, swap, /home, /var/log) and the
  %pre NVMe picker + rootvg wipe from the real Cobbler dell templates.
- Add catalog entries optiplex-3050 (fixed-nvme), optiplex-3060 (auto-nvme) and
  optiplex-7080 (auto-nvme + vg_grow), selected by a device's provision_template
  custom field set to the OptiPlex device_type slug.
- Correct keyboard us -> au and add the kdump addon + kexec-tools/bind-utils to
  match the Cobbler profiles.
- Document the per-model variants and selection in catalog/README.md.

Claude-Session: https://claude.ai/code/session_015ur3i7D2azsMAWTSVABApv

kickstart/almalinux9.ks.tmpl

@@ -8,6 +8,10 @@ puppetserver (puppet.k8s.syd1.au.unkin.net / puppetca.k8s...), writes the
 puppet-initial PUPPETCA_URL env file, then posts back to bootapi so pxe_enabled
 flips off (Cobbler's netboot_enabled flow).
 
+Storage is model-aware: the catalog entry selects a `storage_mode` (and, for
+grow-to-fill, `vg_grow`) so one template serves VMs and every Dell OptiPlex
+model. See the "storage" section and catalog/optiplex-*.yaml.
+
 Data model: see docs/data-model.md. `.RootPasswordHash` and `.ProvisionToken`
 come from Vault/env at render time, never from NetBox.
 */ -}}
@@ -24,7 +28,7 @@ url --url={{ $mirror }}/BaseOS/{{ .Arch }}/os/
 repo --name=AppStream --baseurl={{ $mirror }}/AppStream/{{ .Arch }}/os/
 
 # --- localization ---
-keyboard --xlayouts='us'
+keyboard --xlayouts='au'
 lang en_AU.UTF-8
 timezone Australia/Sydney --utc
 
@@ -46,17 +50,98 @@ network --bootproto=static --device={{ .MAC }} --ip={{ .IP }} --netmask={{ .Netm
 {{- end }}
 {{- end }}
 
-# --- storage ---
+# --- storage (model-aware; selected by the distro catalog's storage_mode var) ---
+# storage_mode is set per-model by the catalog entry (catalog/optiplex-*.yaml):
+#   ""           generic/VM default   -> autopart on sda (unchanged legacy path)
+#   "fixed-nvme" OptiPlex 3050         -> static nvme0n1, BIOS/MBR, fixed 31G VG
+#   "auto-nvme"  OptiPlex 3060 / 7080  -> %pre picks the internal NVMe, EFI-aware
+# vg_grow ("true") grows the LVM PV to fill the disk (OptiPlex 7080 only).
+# Layout (explicit LVM: /boot, root, swap, /home, /var/log) mirrors the Cobbler
+# profiles almalinux9-dell_3050 / _3060 / _7080. Ported from the real templates
+# almalinux9_dell3050 / almalinux9_dell3060 / almalinux9_dell7080.
+{{- $storage := index .DistroVars "storage_mode" }}
+{{- $grow := eq (index .DistroVars "vg_grow") "true" }}
+{{- if eq $storage "fixed-nvme" }}
+# OptiPlex 3050: single known NVMe, legacy BIOS boot (no EFI, no boot-drive).
+ignoredisk --only-use=nvme0n1
+clearpart --all --initlabel --drives=nvme0n1
+part /boot --fstype="xfs" --ondisk=nvme0n1 --size=1024
+part pv.01 --fstype="lvmpv" --ondisk=nvme0n1 --size=31743
+volgroup rootvg --pesize=4096 pv.01
+logvol / --fstype="xfs" --size=10240 --name=root --vgname=rootvg
+logvol swap --fstype="swap" --size=2048 --name=swap --vgname=rootvg
+logvol /home --fstype="xfs" --size=9207 --name=home --vgname=rootvg
+logvol /var/log --fstype="xfs" --size=10240 --name=varlog --vgname=rootvg
+bootloader --location=mbr
+{{- else if eq $storage "auto-nvme" }}
+# OptiPlex 3060 / 7080: partition table is generated in %pre (below) into
+# /tmp/bootapi-partitions and pulled in here, so the OS lands on whichever
+# internal NVMe is present and the EFI partition is added only when booted UEFI.
+%include /tmp/bootapi-partitions
+{{- else }}
+# Generic / VM default: single virtual disk, autopart.
 ignoredisk --only-use=sda
 clearpart --all --initlabel --drives=sda
 bootloader --location=mbr --boot-drive=sda --append="crashkernel=auto"
 autopart --type=lvm --nohome
+{{- end }}
+
+# kdump: reserve crash memory + install kexec-tools (Cobbler com_redhat_kdump).
+%addon com_redhat_kdump --enable --reserve-mb='auto'
+%end
+{{- if eq $storage "auto-nvme" }}
+
+# --- %pre: pick the internal NVMe and emit the partition table -----------------
+# Ported from Cobbler almalinux9_dell3060 / almalinux9_dell7080. Anaconda runs
+# %pre before partitioning, so /tmp/bootapi-partitions (pulled in by the
+# %include above) is populated in time. Picks the first NVMe under 512GB, wipes
+# any prior rootvg so re-provisioning is idempotent, and adds an EFI System
+# Partition only when the host actually booted UEFI.
+%pre --interpreter=/usr/bin/bash --log=/root/bootapi-pre.log
+set -x
+lsblk -d -b -n -o NAME,SIZE
+
+# First internal NVMe under 512GB (skips large data disks and USB installers).
+OSDISK=$(lsblk -d -b -n -o NAME,SIZE | awk '$1 ~ /^nvme/ && $2 < 549755813888 { print $1; exit }')
+
+# Tear down a pre-existing rootvg so a re-install starts from a clean disk.
+if vgs rootvg >/dev/null 2>&1; then
+  lvchange -an rootvg || true
+  vgchange -an rootvg || true
+  vgremove -y rootvg || true
+  for pv in $(pvs --noheadings -o pv_name,vg_name | awk '$2 == "rootvg" { print $1 }'); do
+    pvremove "$pv" --force --force -y || true
+  done
+fi
+
+wipefs -a "/dev/${OSDISK}"
+dd if=/dev/zero of="/dev/${OSDISK}" bs=512 count=100
+
+{
+  echo "ignoredisk --only-use=${OSDISK}"
+  echo "clearpart --all --initlabel --drives=${OSDISK}"
+  if [ -d /sys/firmware/efi ]; then
+    echo "part /boot/efi --fstype=vfat --ondisk=${OSDISK} --size=200"
+  fi
+  echo "part /boot --fstype=xfs --ondisk=${OSDISK} --size=1024"
+  echo "part pv.01 --fstype=lvmpv --ondisk=${OSDISK} --size=31743{{ if $grow }} --grow{{ end }}"
+  echo "volgroup rootvg --pesize=4096 pv.01"
+  echo "logvol / --fstype=xfs --size=10240 --name=root --vgname=rootvg"
+  echo "logvol swap --fstype=swap --size=2048 --name=swap --vgname=rootvg"
+  echo "logvol /home --fstype=xfs --size=9207 --name=home --vgname=rootvg"
+  echo "logvol /var/log --fstype=xfs --size=10240 --name=varlog --vgname=rootvg"
+  echo "bootloader --location=mbr --boot-drive=${OSDISK}"
+} > /tmp/bootapi-partitions
+%end
+{{- end }}
 
 # --- packages ---
 %packages --ignoremissing --excludedocs
 @^minimal-environment
 openssh-server
 chrony
+kexec-tools
+bind-utils
 vim-minimal
 tmux
 git