It's extremely simple, so it's under CC0. If you want to improve it, simply submit a pull request. By submitting one, you agree to release your code under the public domain.
### Disclaimer
The first build was made using a language learning model, and then significantly tweaked by a human being (me). This might be outside of people's comfort zones, so I'd thought it'd be important to note this. This is part of the reason why the code is public-domain.
* Togglable, just-for-fun ASCII art of TFA characters on front page bottom-right corner. Owners can also change this ASCII art by mounting TXT files as a volume.