Delete a practitioner

Soft-deletes a Practitioner. Existing past appointments and sessions are unaffected; the practitioner is removed from new booking flows.

422 Unprocessable Entity if the practitioner has future appointments or sessions still on the books — reassign or cancel those bookings first. The response lists appointments and/or sessions validation errors so callers know what to clear up.

Requires the SETTINGS_MANAGE permission on the practitioner's first site.