formgate: A Contact Form Gateway, Part 2: The Pipeline
Part of the formgate series. What formgate is around 1300 lines of Go across nine files, nothing outside the standard library. Part 1 covered the design decisions: why the emailed OTP had to go, why the sender and recipient come only from config, and how each pipeline step picks a failure direction. This part is the implementation. The whole pipeline lives in one HTTP handler, and the failure directions from Part 1 show up as concrete branches inside it. ...