DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.
A full Inquirer.js-style prompt library has been embedded for interactive CLI prompts, with proper error handling (AbortPromptError, CancelPromptError, ExitPromptError), pagination, arrow-key navigation, and multi-select support. This replaces ad-hoc prompt implementations.
Evidence
Inquirer integration (search for "AbortPromptError", "[Inquirer] Hook functions can only be called from within a prompt")
Strings lifted out of the shipped bundle, so the claim above can be checked against them.