I am unsure how to proceed here, it feels like the standards for FOSS (and any public software) are so high that any less-than-perfect work will reflect badly on me, as I am a part time Software Developer in another language and consider applying for CS PhDs in the next year or so. Do you think it would be best to get rid of the project and delete it, or would it be better to keep it published while continuing to work on it, eventually fixing all flaws? Apart from that I am also not sure how useful it would be to anyone stumbling upon it right now, as it is not yet fully functional and not a good example for learners. Do you think FOSS software should only be published at a point where it bears an actual value to the user? I was publishing early in the hope that other chess enthusiasts might join the development, but I don't think that will happen for the foreseeable future.
Thanks for any advice!
If you never look at it again, it may at least give someone else an answer to a question or a tip on how to solve their problem sometime.
I'd keep it as a record of your progress and just mark it as a toy project/not ready for production etc.