The bench merged the catalog with a copy of itself. Every face in that
merge matches its own box, so the pass never reaches the faces the two
devices disagree about. On the reference library that is 631 of the
tablet's 19,052 faces, and it is the work #77 adds to.
`--remote PEER.sqlite` now also times `merge_remote_catalog` against a
copy of the peer file, and prints the first pass's report so two builds
can be checked for agreement. The first run writes what the peer
brought. The runs after it are the steady state, so compare builds from
two fresh copies of one catalog.
dtourolle
884b681c21