SKILL-Codebase-Onboarder

Use this skill when a user needs to understand, onboard onto, or analyze an existing codebase or project. Trigger on requests like: "pahami project ini", "analyze this codebase", "onboard me to this repo", "visualisasikan flow sistem ini", "gambarkan alur kode ini", "how does this project work", "diagram the architecture", "show me the layers", "buatkan diagram arsitektur project ini", "I just joined this project, help me understand it", "explain this codebase structure", or any request to map out, understand, or document how an existing codebase is structured and behaves. Also trigger proactively when a user points at a repo/project and asks for an explanation of its architecture, layer structure, data flow, or integration points — even if they don't explicitly say "visualize" or "diagram". Do NOT use for generic UI mockups unrelated to explaining existing logic (use frontend-design for that instead).