Claude Code installed and working, with the guidance file you wrote in 102.
A project whose documentation says what its code does: a README with usage instructions, a module's documentation or a configuration reference. Any project with a README that shows how to run it will do.
The handoff file you wrote in 103, or another working record of a page or more, such as a work-in-progress file or a session log.
A shell. The examples use zsh, the shell the course's evidence comes from.
