fix: store appointment address from schedule and auto-add patient to clinic

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>

src/Admin/Controller/AdminApiController.php

@@ -31,6 +31,7 @@ class AdminApiController extends BaseController
 {
     public function __construct(
         private readonly EntityManagerInterface $em,
+        private readonly \App\Appointment\Service\SlotCalculatorService $slotCalculator,
     ) {}
 
     // ── Users ─────────────────────────────────────────────────────────────────
@@ -818,6 +819,8 @@ class AdminApiController extends BaseController
 
         $appointment = new Appointment($doctor, $patient, $slotStart, $slotEnd);
         if (!empty($data['note'])) $appointment->setNote($data['note']);
+        $locationId = $this->slotCalculator->resolveSlotLocationId($doctor, $slotStart);
+        if ($locationId !== null) $appointment->setAddressId($locationId);
 
         $this->em->persist($appointment);
         $this->em->flush();