The reimage is done and verified on hardware: the boot partition is 2 GiB
and reports it, the hardware profile's kernel parameter and module blacklist
are live, and the encrypted root unlocks to a console login.
The install procedure ran without divergence, which is the reproducibility
evidence the task was after.
The reimage also wiped the hand-written git identity, so the gotcha
describing it is updated to record the failure it now provokes.