Paint.NET author Rick Brewster used Claude to generate 180,000 lines of code for a clean-room Direct2D reimplementation, enabling WINE/Linux support. Claude produced the entire reverse-engineered Direct2D library, though Brewster had to heavily supervise it for resource management and architecture decisions. The feat demonstrates LLMs generating massive, complex codebases at scale, even if "vibe coded" without full human review.
Opening Kapyn…