01
The vague brief
TODO: full write-up — the HVAC owner's opening ask and the emergency-handling gap in it
02
Scoping
TODO: full write-up — how the HVAC engagement was scoped: triage tiers, dispatch integration, hours
03
What broke
TODO: full write-up — the failure modes real HVAC calls exposed in the first week
04
Hardening
TODO: full write-up — triage, escalation, and prompt changes that fixed the HVAC failures
05
The eval check
TODO: full write-up — the eval suite that gates changes to the HVAC agent before deploy