storybook-setup

Prerequisites:

1. Confirm Storybook exists (package.json, .storybook/). If not, switch to /storybook-init.
2. Storybook must be at least 10.5 (or next while 10.5 is not yet released). If it is older, or upgrade/repair is needed first, switch to /storybook-upgrade.

Run npx storybook ai setup from the project root (or the Storybook package in a monorepo).

Follow the printed Markdown precisely. Do not substitute your own plan.