Yes, this. This particular comment best summarises how I feel about the topic.

Agreeing with your summary of his actions and calling him cringey are not mutually exclusive

Good god, I am so tired of hearing about this cringey edge lord.

You already know this, but I’ll reiterate it in case it helps you get over whatever guilt you might be feeling about it: you can’t. If you have already offered them a non-judgemental space to vent and have expressed that you’re there for them, then you have already done more than any friend should be expected to.

You say “it doesn’t rest in [your] hands alone”; it doesn’t rest in your hands at all! Your desire to save your friend is very admirable but it also sounds like it could be self-sabotaging to some extent.

“Rehab doesn’t work” is a blanket and not entirely true statement. There are a million different pathways to recovery; not every programme works for every person. Maybe try to explain this to them.

Beyond that, the best thing you can do for them right now is to disengage and remain distant. You don’t deserve to have their pains inflicted on you too.

P.S. I am speaking as a recovering addict. One of the things my recovery has taught me is how much of a burden being an addict is to other people. The thought of a relapse hurting my friends disturbs me. Your friend might resent you for turning them away, but when they do start recovery, they will not only understand why; they’ll appreciate it too.

Accidentally?

If I’m completely honest, after reading both your account and theirs, I don’t really understand why you’re this hung up about it.

It’s almost like you care more about credit than a port that actually works. I know you weren’t done/that it was a WIP, and they told you to wait, but at the end of the day it’s open software, and literally anyone could have beaten you to it.

I don’t think you’re wrong to feel that your efforts should have been represented more, but I honestly would have backed off like 10% through that conversation and just started working on something else. It’s not worth it man. I hope you can feel better about this whole situation soon.

Write a scraper using python and selenium or something. You may have to manually log in as part of it