Refer a patient to Fortius Clinic

In production this is a dedicated referring-clinician portal (NHS identity or invited account, PRD 7.4.2) that also lets a GP or physio attach documents and track referral status. This demo shows the patient-facing entry-point behaviour instead: a referral link that identifies the patient, records the referral, and opens the booking journey with the referred consultant shown first (PRD 5.2, EP-11).