> in the moment I'm using these tools I feel great and powerful, writing features in a span of hours that would've taken me weeks to write by hand. But inevitably some time later I will look at the code and notice all the subtle cracks and inconsistencies the tool introduced, and despair a bit at the mess.

My suggestion would be that instead of sometime later, review incrementally as part of your process. Treat AI as just the tool for writing, just as if you handed it off to a junior. Replace "junior" with "AI" in the SDLC and keep everything else the same.