full_matrix fired on 15/15 sampled PRs because any tests/** change forced it,
costing ~25 runner-minutes each. A changed test file now always joins the
scoped windows lane (covering the #482 OS-specific failure class per-file)
and still runs on ubuntu 22/24 via targeted_tests; the residual macOS /
windows-node-22 cross-product is covered on every push to next.
Also narrows WINDOWS_HINTS from 6 substrings (102/633 files, a ~10-minute
scoped lane) to windows/win32/shell/path — the dropped hints (workflow,
install, hook) are either platform-independent lint tests or already covered
by fullMatrix rules.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
