Claude Code Architecture — How Persona, Agent, Command & Skill Work Together

Claude Code isn't just a chatbot that writes code. It's a customizable AI development platform with a layered architecture that lets you define who the AI is, what actions are available, how those actions are organized, and who executes the work. Most people use Claude Code as-is — type a prompt, get code back. But once you understand the four pillars of its customization architecture, you can build an entire AI-powered development system tailored to your workflow. This post breaks down the fo...