43f4f5f46e
booked_slots previously recorded only (date, time), so availability checking excluded an exact time match but not a real overlap — a 4-hour service booked at 9:00 AM didn't block 11:00 AM or 1:00 PM. Add duration_minutes to booked_slots (populated by sync_booked_slot() from the booked service's own duration) and switch client-side computeAvailableSlots to a half-open-interval overlap check, also rejecting candidates that wouldn't finish before closing time. Claude-Session: https://claude.ai/code/session_01NhxA4npAXAxmCDEJt6kxSH