# Engineering Log #03 — The honest asterisk got cashed in (product F1 0.887), and the model finally became a product

A build-in-public engineering log. Every number below is pulled straight from the test reports — measured values , not rounded to look pretty, not invented. A success you cherry-picked isn't a success. Log #02 ended on an asterisk. We had a video action classifier at 94% accuracy and an end-to-end highlight pipeline at recall 0.86 , but the newly-swapped "pixel finder" was measured under a generous assumption — perfect tracking, GT-interpolated boxes. Its product operating point, measured…