isFullBleedPath(path) only returns true for /dashboard/chat and
/dashboard/mesh, both always in KEEP_ALIVE_PATHS today, so this branch of
wrapperFor()'s key derivation is currently unreachable. Add a comment
(per the review's own "non-blocking; a comment is sufficient" fix) so a
future reader doesn't mistake the defensive branch for dead code to delete.
Co-Authored-By: Claude <noreply@anthropic.com>