Gives HistoryDb an in-memory mode and reconcile() an injectable
deployments list so HistoryService can be exercised hermetically,
without touching the real history.db or shelling out to rpm-ostree.
Covers bootstrap, idempotent reconcile, install-then-reboot,
manual/detected changes, last_known_safe, and chain walking.
Also fixes the pre-existing widget boot-smoke test: startup now makes
a second real Process.run call (via HistoryService.reconcile), which
tipped flutter_test's fake-time zone into flagging a dangling Timer
from that real I/O. Wrapping the pump in tester.runAsync() is the
standard fix.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
A GUI installer wizard for permanent rpm-ostree package layers on
bootc/image-based systems. Walks through: welcome/current-version check,
package name entry with existence check, confirmation, then a streamed
rpm-ostree install via pkexec. On success, writes a pending-confirmation
marker and installs an autostart entry so the next login shows a
"did this update work?" screen with a one-click rollback (bootc rollback
--apply) if not.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
