When configure had nothing left to do, install.sh ended on the kernel check
and the firewall's warnings just above it, so a successful run could be taken
for a failure. Move the end of install.sh to system/finish-install.sh, which
now says the install worked before the reboot advice and configure offer, and
test it.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
