These were dropped in b1b4296 when the README was trimmed, which left no
record in the repo of how the script gets onto the server or how it is
scheduled.
The script had been saved with CRLF terminators, which makes the kernel
look for an interpreter named 'bash\r' and fails the script with
'bad interpreter: No such file or directory' when run on the server.
Pin LF via .gitattributes so editors on the Windows side of /mnt/d
cannot reintroduce it.