I've had so much fun writing small apps in pure JS and HTML witj Gemini (no harness or agent, just the free web chat) because it's forced me to keep my index.html below 1000 lines. I love the forced constraints. It's liberating. My day job is wrangling production-level codebases of a monolith service, so my tiny web apps let me live out the fantasy of cutting features instead of adding them.