My last commit made ROW_COL the literal source of the widths — and froze
them, because inline pixels can't follow the root font that Settings'
text slider drives (0.9-1.3). Measured at 130%: the channel box stuck at
128px while its text wanted 152 and the meta cell, being a rem grid, grew
to 156 — one row in two unit systems.
The classes come back and ROW_COL documents them, saying plainly that the
two are matched by hand and why they have to be. Chasing a comment's
literal truth cost a property I'd already verified.