Appointments now persist address_id resolved from the weekly-schedule session (location_id) across all booking paths (online, secretary, admin). On confirm, the patient is added to the clinic owning that address, or to the doctor's single clinic as fallback. Weekly-schedule create/update now requires location_id on every active session. PatientSession exposes doctor_uuid/doctor_name so clinic records show which doctor each visit is for. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>