The lab list panned sideways on a phone while the overflow guard was
green, because /labs was not on its hand-kept list. The new sweep reads
the routes from src/app: static routes are visited as is, every dynamic
route needs a resolver to real paths, and routes that are not signed-in
surfaces are listed with their reason. A route added without either
fails the bookkeeping test by name.
It runs on an account of its own, filled once from globalSetup with one
or two of everything a route renders, in German, so the narrow-column
and long-string cases are present. Two lab tests assert at the elements
that broke: the marker name keeps a readable width, and the values
list's actions stay on screen. The dialog spec gains a 360px width,
where the labs sheet's three-button footer overflowed in English too.
Marc-André Bombeck