fix(treatment): open the treatment case when confirming from the panel

confirmWithPayments — the path behind POST /appointment/{uuid}/confirm, which
is how a secretary actually confirms — created the patient session but never
called TreatmentCaseStarter. Only onConfirmed did. So an appointment on a
service with an active protocol was confirmed and paid, and no treatment case
or sessions were ever created; the staff panel had nothing to list.

Every existing test in OpenCaseOnConfirmTest drove onConfirmed, which is why
the gap survived. Added one that drives confirmWithPayments; it fails without
the fix.

Also adds app:treatment:backfill-cases, mirroring
app:appointment:backfill-sessions: it reports confirmed appointments on a
protocol service that have no case, and with --fix replays the starter and
prints the exception the logger would otherwise keep to itself.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

tests/Treatment/OpenCaseOnConfirmTest.php

@@ -29,7 +29,7 @@ class OpenCaseOnConfirmTest extends ApiTestCase
         return static::getContainer()->get(AppointmentConfirmationService::class);
     }
 
-    private function scenario(bool $withProtocol, ?string $domainCode = 'beauty'): array
+    private function scenario(bool $withProtocol, ?string $domainCode = 'beauty', bool $confirm = true): array
     {
         $doctor = new Doctor($this->createUser(['ROLE_DOCTOR']), 'دکتر آزمون');
         $this->em->persist($doctor);
@@ -82,7 +82,9 @@ class OpenCaseOnConfirmTest extends ApiTestCase
             $clinic,
         );
         $appointment->addServiceItem($service);
-        $appointment->transitionTo(Appointment::STATUS_CONFIRMED);
+        if ($confirm) {
+            $appointment->transitionTo(Appointment::STATUS_CONFIRMED);
+        }
         $this->em->persist($appointment);
         $this->em->flush();
 
@@ -111,6 +113,33 @@ class OpenCaseOnConfirmTest extends ApiTestCase
         ));
     }
 
+    /**
+     * مسیر واقعیِ منشی: قطعی‌کردن از پنل با مودال پرداخت.
+     *
+     * این مسیر جدا از onConfirmed است و مدتی پروندهٔ درمان را نمی‌ساخت — نوبت قطعی
+     * می‌شد، پول ثبت می‌شد، و پنل پرسنل خالی می‌ماند چون هیچ جلسه‌ای وجود نداشت.
+     */
+    public function testConfirmingFromThePanelWithPaymentsOpensACase(): void
+    {
+        [$appointment, $service] = $this->scenario(withProtocol: true, confirm: false);
+
+        $this->confirmation()->confirmWithPayments(
+            $appointment,
+            $appointment->getVersion(),
+            [['method' => 'cash', 'amount_rials' => 5_000_000]],
+            $this->createUser(['ROLE_CLINIC']),
+        );
+
+        $cases = $this->casesFor($service);
+        self::assertCount(1, $cases);
+        self::assertCount(3, $cases[0]->getSessions());
+
+        $sessions = $cases[0]->getSessions()->toArray();
+        usort($sessions, static fn (TreatmentSession $a, TreatmentSession $b): int
+            => $a->getSessionNumber() <=> $b->getSessionNumber());
+        self::assertSame($appointment->getId(), $sessions[0]->getAppointment()?->getId());
+    }
+
     /** سرویس بدون پروتکل همان نوبت تک‌جلسه‌ای است — نباید پرونده‌ای ساخته شود. */
     public function testConfirmingAPlainServiceOpensNoCase(): void
     {