Codebase Walkthrough Generator Generate interactive HTML files with clickable Mermaid diagrams that give new developers a quick mental model of how a feature or system works. The goal is fast onboarding — a rough map of concepts and connections, not a code reference. Each walkthrough should be readable in under 2 minutes. CRITICAL : When this skill is triggered, you MUST generate a file. Never respond with just text — always produce the interactive HTML output. Always dark mode. Every walkthrough uses a pure black background ( ), white text, and purple accents. Never generate light-mode walkt…