CI failed on a_file_swapped_after_the_check_is_never_read: its filesystem
handed the deleted checked file's inode number to the file made in its
place, so device and inode matched for another file. The opened file
must now also match the checked file's size, modification time and change
time. The test now models a real swap (the replacement exists before the
original goes), the reused-inode case, an in-place rewrite, and that the
unchanged file is read.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01T3gXMVt7XJPi6ens1or9Dj
swaitsandClaude Opus 5.5
e60ecc5317