An aborted Playwright run never reaches `afterAll`, so its flows and
dashboards stayed in the store until somebody deleted them by hand. A
setup-project test now removes them before the next run, which is the
only point that is reached even when the run before it died.
The suite runs against whatever stack is up — somebody's own instance
with real flows in it — so the predicate matches only the shape every
fixture has, `test_<spec>_<base36 Date.now()>` with an optional suffix,
and only once that timestamp is an hour old.
Also correct the coverage-html fallback hint: `make clean` cannot clear
a root-owned htmlcov either, for the same reason `coverage html` cannot
write it.
stroblme
d4f0345e97