Deep Code Analysis This Skill provides comprehensive codebase investigation capabilities using the codebase-detective agent with semantic search and pattern matching. Prerequisites (MANDATORY) When to use this Skill Claude should invoke this Skill when: - User asks "how does [feature] work?" - User wants to understand code architecture or patterns - User is debugging and needs to trace code flow - User asks "where is [functionality] implemented?" - User needs to find all usages of a component/service - User wants to understand dependencies between files - User mentions: "investigate", "analyz…