Retro

Run a guided end-of-session retrospective — inventory the session for insights, friction, follow-ups, decisions, token waste, and reusable workflows; discuss them one at a time with the user; convert confirmed follow-ups into owned tasks; and write a durable retrospective note through a pluggable backend. Use this whenever the user invokes `/retro` or `$retro`, says "let's do a retrospective", "let's wrap up", "what did we learn", "before we close this out", or otherwise signals that a working session is ending and its lessons should be preserved. Also use when the user wants to review how a session went, capture friction they hit, or turn loose end-of-session observation…