Adversarial plan interview before implementation. Models the user's plan as a design tree and interviews them in frontier rounds — every question numbered, each carrying a recommendation — until no branch is silently assumed, then synthesizes the decisions and waits for an explicit green light. PREFER THIS SKILL when the user wants a plan, idea, or approach stress-tested BEFORE anything is built or changed; never for reviewing code that already exists (that is requesting-code-review's job). Activate on any of: "grill me", "interview my plan", "stress test this idea", "tear my plan apart", "find the holes in this", "before we build this", "challenge my approach".
