Add Frontdesk kiosk APK build script and manufacturer flash guide.

Ship OEM documentation for MDM, Elo, and Zebra lockdown plus a provisioning QR on kiosk device registration so factory tablets can pair on first boot.

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

app/Services/Frontdesk/QrCodeService.php

@@ -33,6 +33,16 @@ class QrCodeService
         return $this->renderSvg($this->employeeUrl($employee), $size);
     }
 
+    public function kioskUrl(string $deviceToken): string
+    {
+        return route('frontdesk.kiosk.device', $deviceToken);
+    }
+
+    public function kioskSvg(string $deviceToken, int $size = 200): string
+    {
+        return $this->renderSvg($this->kioskUrl($deviceToken), $size);
+    }
+
     protected function renderSvg(string $url, int $size = 200): string
     {
         $options = new QROptions([