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.
30_runtime_blueprint.sh calls POST /templates/{id}/resolve with the
device_id from the server handshake and the template_id from the
Bereitstellungsvorlage selection, storing the resulting Runtime
Blueprint under /run/tuxflotte/runtime/.
40_backend.sh dispatches to backends/${backend_id}/backend.sh based on
the resolved backend_id and drives the backend_init/validate/
generate_config/launch/postinstall lifecycle from 06-backend-api.md.
backends/fedora/backend.sh implements that lifecycle for Fedora:
backend_generate_config() renders kickstart.tpl via envsubst using the
Runtime Blueprint's installation_directives and the device hostname,
embedding the resolved Merkmal blueprints as JSON for the (not yet
implemented) Provisioning Agent to apply later. Replaces the old
git-clone-based %post bootstrap. backend_launch()/backend_postinstall()
are Phase 1 stubs pending the live-ISO boot integration (see
platform-docs ADR-0003).
20_profile_selection.sh and 25_installation_confirm.sh still spoke the
old flat profile model (.profiles[], .profile.distribution,
.profile.installer.type) that the provisioning server no longer
returns - it now returns .templates[] with workspace/backend objects
(see provisioning-server's Merkmal/Blueprint/Bereitstellungsvorlage
migration). Both modules now read/write
/run/tuxflotte/assignment/template.json against the current
Bereitstellungsvorlage schema, matching 10-interactive-provisioning-flow.md.
