Add full Blood Bank specialty suite on shared shell.

Mirror Emergency: stage workflow, issue/transfusion records, analytics,
print, and action-menu stage flow without a parallel EHR.

Co-authored-by: Cursor <cursoragent@cursor.com>

app/Services/Care/SpecialtyShellService.php

@@ -270,7 +270,7 @@ class SpecialtyShellService
         ) {
             $code = (string) ($stage['code'] ?? '');
 
-            if (in_array($moduleKey, ['dentistry', 'emergency'], true) && $visitIds->isNotEmpty()) {
+            if (in_array($moduleKey, ['dentistry', 'emergency', 'blood_bank'], true) && $visitIds->isNotEmpty()) {
                 $count = Visit::owned($ownerRef)
                     ->where('organization_id', $organization->id)
                     ->whereIn('id', $visitIds)
@@ -502,6 +502,7 @@ class SpecialtyShellService
         string $serviceCode,
         string $ownerRef,
         ?string $actorRef = null,
+        int $quantity = 1,
     ): Bill {
         $service = collect($this->provisionedServices($organization, $moduleKey))
             ->first(fn ($s) => ($s['code'] ?? '') === $serviceCode);
@@ -510,12 +511,21 @@ class SpecialtyShellService
             throw new \InvalidArgumentException("Unknown specialty service [{$serviceCode}].");
         }
 
-        $bill = $this->bills->generateFromVisit($visit, $ownerRef, $actorRef);
+        // Reuse an open visit bill without syncLineItemsFromVisit — that sync deletes
+        // prior specialty_service lines and would wipe multi-item issue/billing batches.
+        $bill = Bill::owned($ownerRef)
+            ->where('visit_id', $visit->id)
+            ->whereNotIn('status', [Bill::STATUS_VOID])
+            ->first();
+
+        if (! $bill) {
+            $bill = $this->bills->generateFromVisit($visit, $ownerRef, $actorRef);
+        }
 
         return $this->bills->addManualLineItem($bill, $ownerRef, [
             'type' => $service['type'] ?? 'misc',
             'description' => $service['label'],
-            'quantity' => 1,
+            'quantity' => max(1, $quantity),
             'unit_price_minor' => (int) ($service['amount_minor'] ?? 0),
             'source_type' => 'specialty_service',
             'source_id' => null,