Returns the authenticated caller's workspace context in a single call — no workspace ID required. Everything is derived from the auth token or Organization header.

Response includes:

• user — id, first_name, last_name, email of the requesting user
• workspace — id, name, slug, is_active, and settings (timezone, language, start_of_week)
• teamspaces — active spaces visible in workspace context (id, name, slug, is_active)

Do not use this response as the membership authority for space_id. Call listTeamspaces to resolve IDs the current user can scope into.