Agent Skills: fa-product-portfolio-retrospective

Provides the Stage-10 closure and portfolio-compounding playbook for consumer one-off / in-app-purchase products - end-of-life decision triggers and review cadence, a three-way continue/maintenance/sunset evaluation plus sequel/DLC, a humane sunset that honors recent one-off purchases, a portfolio retrospective that harvests capabilities and calibrates the unit-economics model, documenting realized priors, and transferring the audience/CRM/payer-base forward into a new Discovery cycle. Use to close a title and compound learnings back to Stage 1. Money-gated and net-of-fee aware (decisions run on NET-LTV vs operating cost and realized-vs-predicted calibration).