feat(patients): phase B2 — attachments (ضمیمه)

Add patient file attachments: a new PatientAttachment entity (record-scoped,
CASCADE) + repository, and endpoints GET /patient/{uuid}/attachments,
POST /patient/{uuid}/attachment (raw-body upload) and DELETE
/patient/attachment/{uuid} (owner-scoped). Factor the shared raw-body upload
logic into FileUploadService. Wire the "ضمیمه" tab in PatientDetailPage
(upload + list + delete). PHPUnit covers list/delete/ownership; Vitest covers
the tab. API docs updated.

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

config/services.yaml

@@ -28,6 +28,10 @@ services:
         arguments:
             $environment: '%kernel.environment%'
 
+    App\Shared\Service\FileUploadService:
+        arguments:
+            $projectDir: '%kernel.project_dir%'
+
     App\Doctor\Controller\DoctorController:
         arguments:
             $projectDir: '%kernel.project_dir%'