Grace - Make AI-built apps safe to evolve

Hey Product Hunt 👋 I'm Loïc, founder of Grace. I've been building software since I was 14, and for the last few years I've run a dev agency where we get pulled in to rescue codebases. Lately, almost every rescue looked the same: a founder had shipped something real with AI: Lovable, Cursor, Claude Code, you name it, and then hit a wall. New features broke old ones. Nobody knew what the code actually did anymore. They were scared to touch their own product. That's the gap Grace fills. You built your app with AI. Grace makes it maintainable, tested, and safe to evolve. It's not another app builder! The market's already drowning in those. Grace is the layer that comes after the build. It maps your codebase so you finally understand it, wraps it in a safety net of tests, stabilizes the parts most likely to break, remembers the decisions behind your code, and keeps watch for regressions every time you ship. Think of it less as a tool and more as the senior engineer your AI-built project never had. We built this because we lived the problem, and I'd rather solve it in the open than pretend maintainability is someone else's job. If you've ever shipped something with AI and then been afraid to change it, I want to hear your story, good or painful. What broke? What scared you?