Harness engineering for coding agent users
https://martinfowler.com/articles/harness-engineering.html
Agent = Model + Harness
A well-built outer harness serves two goals: it increases the probability that the agent gets it right in the first place, and it provides a feedback loop that self-corrects as many issues as possible before they even reach human eyes. Ultimately it should reduce the review toil and increase the system quality, all with the added benefit of fewer wasted tokens along the way.
