Path.glob raises NotImplementedError for a non-relative pattern, which a string `workspaces` (iterated char by char, so "/") or an absolute entry produces. The (OSError, ValueError, TypeError) catch missed it, so the error escaped to the caller's suppress(Exception) and no lock was reverted at all -- back to autostash every run. Non-list values are now ignored and each pattern is tried on its own so a bad one just owns nothing.
install.sh: read the workspace globs with `while read` instead of an unquoted $(...) so they are never pathname-expanded against the caller's CWD before `case` sees the pattern.