observe

Start a live observe-and-coach session that rides Claude Code's self-paced /loop and reacts to your file changes through a chosen role. Use when the user says observe me / watch me code / rubber-duck this / pair with me / interview me, or asks for live feedback while they work. Confirms a role first (rubber-duck, pair-programmer, interviewer, custom), optionally scaffolds an interviewer exercise, then emits role-appropriate feedback (or silence) each cycle until stopped. Reads all per-role lens/voice/cadence as data from observer/knowledge/roles.md — never hard-codes role behavior.