Slug / tier / group / category: studio-booking · advanced · features · Membership One-liner: Studio selector + availability slots + token cost → balance-after + confirm & deduct. Closest references: ProductModule (option chips + fields sub-card + CTA); TicketingModule tiers; Commerce Stack pattern. Source: YOU Studio wireframes §4b.
studios[] {id,name,slots[] {id,label,booked?}}, tokenCost, balance, policy?, onConfirm(studioId, slotId).
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Live availability, server deduction.