ks(installer): add %packages for live boot env (dracut-live, anaconda)

livemedia-creator needs the kickstart to specify packages for the
LIVE BOOT environment (the squashfs that runs Anaconda); ostreecontainer
populates the target system. The two are independent. Add minimal
package set: anaconda-tui + dracut-live + ostree/rpm-ostree/bootupd
+ grub2 + shim + xorriso.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

kickstart/install-ostreecontainer-installer.ks

@@ -36,6 +36,39 @@ rootpw --lock
 # disk + LUKS + btrfs selection. Runtime ks (gum TUI) provides the
 # full partition spec at real-install time.
 
+# ── Packages for the LIVE BOOT ENVIRONMENT ──
+# These are NOT installed on the target system. They populate the
+# squashfs that boots Anaconda. The target is populated by
+# `ostreecontainer` below from the OCI image.
+%packages
+@^minimal-environment
+@core
+@anaconda-tools
+anaconda-live
+anaconda-tui
+livesys-scripts
+dracut-live
+dracut-config-generic
+kernel
+kernel-modules
+kernel-modules-extra
+glibc-all-langpacks
+ostree
+rpm-ostree
+bootupd
+grub2-efi-x64
+grub2-efi-x64-modules
+grub2-pc
+grub2-pc-modules
+grub2-tools
+grub2-tools-extra
+shim-x64
+efibootmgr
+syslinux
+isomd5sum
+xorriso
+%end
+
 # ── ostreecontainer: populate / from veilor-os OCI ──
 ostreecontainer --url=ghcr.io/veilor-org/veilor-os:43 --transport=registry