Probe the portfolio operating system itself — both the PDLC process (flow boundaries, altitude, WIP, discovery discipline, measure-and-learn) and the portfolio construction/topology (dependency concentration, platform extraction, team-around-outcome options) — and capture improvement ideas as spec-driven bets in the improvements/ backlog instead of implementing them on the spot. Use when the board is healthy enough to earn self-improvement, after recurring findings, or on an improvement cadence. Loops 3+4 of the portfolio-pdlc family; focus:process, focus:topology, or focus:auto.