The POSIX suites skirt this: pjdfstest's unlink/14.t covers only fstat and
pread on an unlinked descriptor — its driver has no fchmod at all and never
opens a directory. Pin the full rule in the FUSE integration suite:
ftruncate, fchmod, futimes, fstat, and the f*xattr calls keep working
between the removal of the last name and the final close, for a file after
unlink and a directory after rmdir, with nlink 0 and the changes visible to
a following fstat.
Claude-Session: https://claude.ai/code/session_01GYqLENjZzbV5hgt4L8cSAK
