01
The vague brief
TODO: full write-up — the plumbing owner's opening ask and the emergency-first reality it missed
02
Scoping
TODO: full write-up — how the plumbing engagement was scoped: emergency script, service area, booking
03
What broke
TODO: full write-up — the failure modes real plumbing calls exposed in the first week
04
Hardening
TODO: full write-up — emergency-flow and prompt changes that fixed the plumbing failures
05
The eval check
TODO: full write-up — the eval suite that gates changes to the plumbing agent before deploy