Agent Skills: adversarial-audit

Audits SaaS and usage-based web apps for adversarial usage patterns — accidental, opportunistic, and deliberate. Use this when the user says "adversarial audit", "abuse case audit", "idiot-proof this app", "find usage exploits", "business logic audit", or "how could users break this". Explores the codebase to map the economic surface area (pricing tiers, usage limits, free trials, costly resources), then generates abuse cases where user behavior — intentional or not — could break assumptions, bypass limits, amplify costs, or corrupt state. Produces a prioritized markdown report with findings, code locations, and fix recommendations, then optionally verifies findings interactively in a browser.