Migration runbook at docs/install/migrate-from-makeinstall.md covers the
mandatory remove-then-install path, why over-install is forbidden, no-move
continuity guarantees, and reset-to-dormant expectations.
Acceptance criteria MG-1 through MG-4 added to the install criteria section.
Containerized tests verify no-move continuity: existing group makes sysusers
a no-op, existing store dir makes tmpfiles a no-op, hand-edited config
survives as a non-database file, and store schema is caught up by the
upgrade-path migration. Dead code from a prior merge removed.
Co-authored-by: CommandCodeBot <noreply@commandcode.ai>
xavierk