Agree, building real apps with the harness is the strongest proof. Would love to hear where Bullet fell short vs your setup, especially on speed for your builds.
I have a way different taste, my coding agent doesn't run in a shell and proposes file changes first without changing them, so its prompt -> propose changes -> accept, bullet has the typical agent workflow, prompt -> create changes -> revert (if you don't like what was changed)
My coding agent leverages vector search and grep, just using grep takes longer and seems more expensive per task.