Checkpoint some progress on proving [atomic_cp_recover_ok]: prove the preconditions for the first lookup in the crash_xform tree.
Checkpoint some progress on proving [atomic_cp_recover_ok]: prove the preconditions
for the first lookup in the crash_xform tree.

mit-pdos/fscq-impl,mit-pdos/fscq-impl,mit-pdos/fscq-impl,mit-pdos/fscq-impl,mit-pdos/fscq-impl