Fix RuboCop offenses in Active Storage migrations

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: dadachi

db/migrate/20260306071846_add_service_name_to_active_storage_blobs.active_storage.rb

@@ -6,7 +6,7 @@ def up
     unless column_exists?(:active_storage_blobs, :service_name)
       add_column :active_storage_blobs, :service_name, :string
 
-      if configured_service = ActiveStorage::Blob.service.name
+      if (configured_service = ActiveStorage::Blob.service.name)
         ActiveStorage::Blob.unscoped.update_all(service_name: configured_service)
       end
 

db/migrate/20260306071847_create_active_storage_variant_records.active_storage.rb

@@ -8,20 +8,21 @@ def change
       t.belongs_to :blob, null: false, index: false, type: blobs_primary_key_type
       t.string :variation_digest, null: false
 
-      t.index %i[ blob_id variation_digest ], name: "index_active_storage_variant_records_uniqueness", unique: true
+      t.index %i[blob_id variation_digest], name: "index_active_storage_variant_records_uniqueness", unique: true
       t.foreign_key :active_storage_blobs, column: :blob_id
     end
   end
 
   private
-    def primary_key_type
-      config = Rails.configuration.generators
-      config.options[config.orm][:primary_key_type] || :primary_key
-    end
 
-    def blobs_primary_key_type
-      pkey_name = connection.primary_key(:active_storage_blobs)
-      pkey_column = connection.columns(:active_storage_blobs).find { |c| c.name == pkey_name }
-      pkey_column.bigint? ? :bigint : pkey_column.type
-    end
+  def primary_key_type
+    config = Rails.configuration.generators
+    config.options[config.orm][:primary_key_type] || :primary_key
+  end
+
+  def blobs_primary_key_type
+    pkey_name = connection.primary_key(:active_storage_blobs)
+    pkey_column = connection.columns(:active_storage_blobs).find { |c| c.name == pkey_name }
+    pkey_column.bigint? ? :bigint : pkey_column.type
+  end
 end