Kieran's opinionated (and probably slightly dumb) nix config

bore: fit traffic lines to the terminal master

Columns are sized to the widest thing that can land in them, and a narrow terminal gives them up from the right: bytes, then duration, then the timestamp. The path takes what is left, up to a point, so a wide terminal no longer pushes the numbers to the edge. Two overflows fixed on the way. Durations past a minute printed 7234.1s into a slot meant for four characters, and sizes divided by 1024 while saying kB, which is both wrong and how 1023.9 kB got into a nine-wide column.