lint:size counts the lines of every source file under client/src, tests
aside. A file may hold 1000 lines; the 24 files that are longer today are
listed in scripts/size-baseline.json with their current length and fail
the check when they grow. --update lowers an entry once a file shrinks
and never raises one, so a long file is split by concern instead of
growing. A baseline that cannot be read or parsed stops the check with
its reason, and --update leaves it as it is. It runs in the client job
next to the reading direction check.
Maurice