Invoke the grilling skill and follow it.
That skill is the whole interview: design tree, frontier rounds, numbered questions with a recommended answer each. Nothing is restated here — a second copy would drift from the first.
Use grill-with-docs instead whenever there is a working directory. Same interview, but it also runs domain-modeling, so terminology and decisions land in CONTEXT.md and ADRs as they are settled rather than evaporating with the session. Reach for this one when there is no repo to write to, or when the outcome is a decision rather than a document.