Version Control capabilities plus two small unrelated questions

Hello, would someone kindly advise whether bcachefs supports file 
versioning, somewhat in the spirit of Stallman (lecture at KTH Sweden in 
1986) where files are individually versioned (as opposed as taking 
snapshots of entire volumes) but the versions are not just ordinary 
distinct files, they are hidden files connected with each other.

In particular is there a standard way to 'follow' the same file along 
its snapshotted versions? Say, ask bcachefs to return the list of 
snapshotted versions by giving input this or that file in the current 
version of the filesystem? Note that if such file was deleted and 
another with the same name created I don't want that new file also to 
show up. And related question, is there any command that would list the 
snapshotted files which have no corresponding in the current version of 
the file system (for example because I deleted such file after having 
snapshotted it)?

First small unrelated question: do you confirm that standard Guix is 
currently incompatible with bcachefs as root filesystem and is there any 
plan to patch Guix so that it's possible (with standard Guix 
installation)? Note: "Currently Guix System only supports ext4, btrfs, 
JFS, F2FS, and XFS file systems. In particular, code that reads file 
system UUIDs and labels only works for these file system types."

Why does the generation number in bcachefs snapshots starts from U32max 
and goes down, instead of the naive start from 0 and goes up? There must 
be some strong conceptual reason for doing the first because I see 
already a few small conceptual reasons to do the second.

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