This skill should be used when the user asks to "audit logic bugs", "read all source files and find bugs", "gate tầng 0", "logic check a module", "verify module correctness", "find business logic bugs", "audit this module before drawing diagrams", or says "read every line of code". Works on any module, language, or framework — discovers tests, docs, and project structure at runtime. Audit only — when the goal is to also draw the diagrams, use /verify-then-draw instead.
