fix: [equipment] 사진 URL을 Signed URL로 변경 (비공개 GCS 버킷 대응)

- getPhotoUrls(): 공개 URL → GoogleCloudStorageService.getSignedUrl() 사용
- basic-info 탭: 동일하게 Signed URL로 변경
- URL 유효기간 120분

app/Services/EquipmentPhotoService.php

@@ -23,7 +23,8 @@ class EquipmentPhotoService
     private const QUALITY_STEP = 5;
 
     public function __construct(
-        private readonly GoogleCloudService $googleCloudService
+        private readonly GoogleCloudService $googleCloudService,
+        private readonly GoogleCloudStorageService $googleCloudStorageService,
     ) {}
 
     /**
@@ -207,12 +208,11 @@ public function deletePhoto(Equipment $equipment, int $fileId): bool
     public function getPhotoUrls(Equipment $equipment): array
     {
         $photos = $equipment->photos()->get();
-        $bucket = config('services.google.storage_bucket');
 
-        return $photos->map(function ($photo) use ($bucket) {
+        return $photos->map(function ($photo) {
             $url = null;
-            if ($photo->gcs_object_name && $bucket) {
-                $url = "https://storage.googleapis.com/{$bucket}/{$photo->gcs_object_name}";
+            if ($photo->gcs_object_name) {
+                $url = $this->googleCloudStorageService->getSignedUrl($photo->gcs_object_name, 120);
             }
 
             return [

resources/views/equipment/partials/tabs/basic-info.blade.php

@@ -91,9 +91,8 @@
     <div class="grid grid-cols-2 sm:grid-cols-3 md:grid-cols-4 gap-3">
         @foreach($equipment->photos as $photo)
             @php
-                $bucket = config('services.google.storage_bucket');
-                $url = $photo->gcs_object_name && $bucket
-                    ? "https://storage.googleapis.com/{$bucket}/{$photo->gcs_object_name}"
+                $url = $photo->gcs_object_name
+                    ? app(\App\Services\GoogleCloudStorageService::class)->getSignedUrl($photo->gcs_object_name, 120)
                     : null;
             @endphp
             @if($url)