It’ll fix up environments, bump versions, fix compiler issues and outdated code, give you a better user interface (or create one to begin with). I usually point to this when people question if AI has productivity benefits, because it’s a massive time saver for me. I have spent hours in the past trying to chase down some obscure platform-specific GCC error on Stack Overflow.
Ideally pay it forward and PR the things you fixed.
Don't post generated text or AI-edited text. HN is for conversation between humans.[1]
I would vastly prefer content like this on HN rather than lazy posts of popular news articles that I could have found through any other tech news aggregator.