Replaces the vague "separate netinstall media" fallback with a
concrete design: move the workspace/backend decision to the
self-service portal, before boot, and bake the finished kickstart/
autoinstall/preseed config into a personalized, distro-specific,
much smaller installer ISO at build time. Sidesteps the live-session
vs. native-installer-automation tension entirely, and the open
early-boot networking question from the two-stage-reboot plan, since
no runtime config fetch is needed. Consistent with backend_postinstall()
already being scoped to the installed system's first boot, not the
install phase.
Names the real cost honestly: demotes the interactive kiosk mode to
an optional secondary path, and requires real per-distro ISO-build
infrastructure server-side.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>