Checklist and full solving framework for a supply-chain / operations case — the brief is about how goods, materials, or inventory move (sourcing, production, warehousing, distribution, logistics), under everyday planning or a sudden disruption — one of a family of case-type skills alongside `case-brand-communication`, `case-profit-optimization`, and `case-orchestrator` (market entry, M&A, pricing, turnaround still planned).
