Lesson 1: Answers your code can trust

Module 6 · Lesson 1 · About 50 minutes · Needs: Module 3 Lesson 3 (schema-enforced output, the Triage fields) and the guard ask from course-guide/02; Module 2 Lesson 1 helps (counting tokens)

The situation

It is Monday 6 July 2026, week 6. Tomasz's router now reads every triage label and puts the ticket in a queue. On Friday one reply began "Sure! Here is the triage:", and the router crashed with forty tickets behind it.

Maya's rule for this week: no reply reaches the router until code has checked it. You will make triage return a typed Triage, check it, repair it, keep what is usable when repair fails, and hand the rest to a person. Ana Duarte's ticket T-1001, a duplicate charge of 288 USD, is the running example.