cofounder arguments are common, esp in crypto. for your next venture, it's better to have a cofounder agreement with vesting schedule in place. once someone becomes irrational and unreasonable, it's a sign to get lawyers involved.
dont be too hard on yourself, happens to the best of us.
if your outputs are consumer facing, might want to red team too
this is good for thinking about how and why of evals https://hamel.dev/blog/posts/evals
for tooling i found promptfoo to be lightweight and easy to get started.
it's turning learning and search into a compute bound problem accessibly by SWEs and DSs.
Edit: apparently there have been quite a few successful submissions since. I believe that if you skip a required field, the submit button is disabled - is it possible that was going on here?