Fetch booking question answers for an appointment

Returns the full set of booking questions and their current answers for an appointment, as configured on the appointment's calendar. Each entry includes the question's column_name, label, kind, intent, built_in flag, current value, and formatted_value.

Use the column_name of each entry as the key when sending updates via the PATCH /api/v1/appointments/{appointment_id}/booking_questions endpoint.

Note: booking questions are sourced from the appointment's calendar. Appointments not created from a calendar (e.g. Quick Add) have no associated questions and will return an empty list.

Required permission: assigned_appointment_read or unassigned_appointment_read