This is a good idea. I'm going to offer some unsolicited feedback here:

The configuration thing is unclear to me. I think that "current directory" means "same directory as the binary", but it could mean pwd.

Neither of those is good: configuration doesn't belong where the binaries go, and it's obviously wrong to look for configs in the working directory.

I suggest checking $XDG_CONFIG_HOME, and defaulting to `~/.config/sgrep/config.toml`.

That extension is not a typo, btw. JSON is unpleasant to edit for configuration purposes, TOML is not.

Or you could use an ENV variable directly, if the only thing that needs configuring is the model's location, that would be fine as well.

If that were the on ramp, I'd be giving feedback on the program instead. I do think it's a clever idea and I'd like to try it out.