feat(patients): phase B4 — messages (پیام‌ها)

Add a patient message/communication log: a new PatientMessage entity
(record-scoped, CASCADE) + repository, and owner-scoped endpoints
(GET messages, POST message, DELETE message) with a validated channel
(sms/note/call/email). Wire the "پیام‌ها" tab in PatientDetailPage
(send box + list + delete). PHPUnit covers create/list/delete + ownership
+ validation; Vitest covers the tab. API docs updated.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

src/Patient/Repository/PatientMessageRepository.php

@@ -0,0 +1,44 @@
+<?php
+
+namespace App\Patient\Repository;
+
+use App\Patient\Entity\PatientMessage;
+use App\Patient\Entity\PatientRecord;
+use Doctrine\Bundle\DoctrineBundle\Repository\ServiceEntityRepository;
+use Doctrine\Persistence\ManagerRegistry;
+
+class PatientMessageRepository extends ServiceEntityRepository
+{
+    public function __construct(ManagerRegistry $registry)
+    {
+        parent::__construct($registry, PatientMessage::class);
+    }
+
+    public function findByUuid(string $uuid): ?PatientMessage
+    {
+        return $this->findOneBy(['uuid' => $uuid]);
+    }
+
+    /** @return PatientMessage[] */
+    public function findByRecord(PatientRecord $record): array
+    {
+        return $this->createQueryBuilder('m')
+            ->where('m.record = :record')
+            ->setParameter('record', $record)
+            ->orderBy('m.id', 'DESC')
+            ->getQuery()
+            ->getResult();
+    }
+
+    public function save(PatientMessage $m): void
+    {
+        $this->getEntityManager()->persist($m);
+        $this->getEntityManager()->flush();
+    }
+
+    public function remove(PatientMessage $m): void
+    {
+        $this->getEntityManager()->remove($m);
+        $this->getEntityManager()->flush();
+    }
+}