Initial file system scaffolding for Recoup sandbox accounts with organizations and artists.

• Fetches organizations and artists from the connected Recoup account via CLI, then creates an opinionated folder structure under orgs/{org}/artists/{artist-slug}
• Generates a RECOUP.md identity file in each artist directory to track setup status and connect the workspace to the Recoupable platform
• Requires RECOUP_ACCOUNT_ID environment variable only when using an Org API Key; omit it for Personal API Keys
• Intended as a one-time initialization step; check for existing orgs/ directory before running to avoid redundant setup