Blue-on-white (matching pics/tuxflotte-beschriftet-schatten.svg's
brand color rgb(52,101,164)) instead of GRUB's default white-on-black.
The logo image itself doesn't work here: classic gfxterm always paints
an opaque per-character cell background, so a background_image gets
fully covered by color_normal's background and never becomes visible -
confirmed by booting the composited variant in QEMU before dropping it
again. Showing the actual logo needs the GRUB theme/gfxmenu engine,
which this live ISO doesn't ship (empty /boot/grub2/themes, no
x86_64-efi module directory) - not attempted here. The logo fits more
naturally on the Plymouth splash or live-desktop wallpaper instead,
both already confirmed to render correctly.
Replaces the Fedora DVD/netinst base with a live-ISO boot chain
(root=live:CDLABEL=Fedora-Cinn-Live-44 rd.live.image instead of
inst.stage2=/inst.ks=), implementing ADR-0003. The GRUB menu now
offers two entries booting the same live image with a
tuxflotte.mode=auto/interactive kernel cmdline flag instead of a
boot-time kickstart URL - installer.sh will read this flag once it
runs inside the live session.
scripts/build.sh and scripts/extract.sh now extract the source ISO via
`xorriso -osirrox` instead of a loop mount, removing the sudo
dependency for local builds.
Verified end-to-end in QEMU/KVM: GRUB menu renders both entries,
kernel/initrd load correctly, boot proceeds to the live session.
