Tools like Bolt, Replit, and Lovable are great for proving an idea. They are not built to carry real users. If your AI-generated MVP is starting to break, slow down, or scare you every time you add a feature, that's normal, and it's fixable. I rebuild these prototypes into real production systems: proper architecture, a database that won't fall over under load, security done right, and a codebase your future team can actually work in. You keep everything you validated. You lose the duct tape.