Claude Code setup guide reveals hidden config, subagents

The real takeaway is that Claude Code gets much better when you treat it like a governed runtime, not just a chat interface. CLAUDE.md, session persistence, subagents, hooks, telemetry, cleanup, and GitHub attribution controls are what make it easier to standardize across a team and rely on it in real repositories. The video also signals that Claude Code is maturing from a demo-friendly CLI into real workflow infrastructure.