The agent paused. It was waiting for me. I was not used to that.

Every AI tool I had worked with before would fill the gap. Ask it to implement a feature and it would implement the feature, then the next logical thing, then the thing after that. You would come back to a diff three times larger than what you asked for. Confident. Finished. Sometimes wrong.

Build did not do that.

It executed Phase 1. It stopped.

I reviewed. I approved. It executed Phase 2. It stopped again.