Help! mv nuked my files and filesystem

[Andreas Sheriff]

I wrote a program to generate a script containing multiple mv commands to
rename files, but when I ran it, mv kept says x file and y file are the
same.  Some, I guess it renamed, but the bulk of my files are missing.

df still reports the same fs size, but where are my renamed files?

Please find attached both the script to rename the files and a tree command
done on the root directory.

Thanks in advance for any assistance you can offer.

roottree.zip