/onboard - Codebase Onboarding

When invoked, systematically explore an unfamiliar codebase and produce a mental model of how it works. This is the first skill to run when working with a new project.

Steps

1. Read Documentation

• Check for README, CONTRIBUTING, ARCHITECTURE, or similar docs at the project root.
• Note the stated purpose, setup instructions, and any architectural decisions.
• Don't trust docs blindly -- they may be outdated. Use them as a starting hypothesis.

2. Understand Directory Structure