For the first time since I started using AI to help me build Bonumark Stream, I had to abandon hours of work because the development direction went bad.

The problem was not one broken screen. Too many architectural assumptions got introduced, then each correction tried to fix the previous mistake with another layer.

A simple Profile feature started bleeding into routing, theme behavior, metadata, exports, and presentation state. Some of those decisions conflicted with what Bonumark Stream already is.

So I stopped.

That matters.

Building with AI does not remove the need for judgment. It makes judgment more important. You still have to understand the product, recognize when the architecture is drifting, test the work, and be willing to throw away hours instead of protecting bad decisions because you already invested time in them.

The lesson was simple: preserve the existing architecture, define the boundaries first, and never let one wrong assumption turn into five more.