media not found fixes, rename unused enum

app/jobs/domain/post_file_thumbnail_job.rb

@@ -2,6 +2,7 @@
 class Domain::PostFileThumbnailJob < Scraper::JobBase
   queue_as :thumbnails
   discard_on Vips::Error
+  retry_on LoadedMedia::FileNotFound
 
   sig { override.returns(Symbol) }
   def self.http_factory_method

app/lib/loaded_media.rb

@@ -6,6 +6,9 @@ class LoadedMedia
   extend T::Helpers
   abstract!
 
+  class FileNotFound < StandardError
+  end
+
   sig do
     params(content_type: String, media_path: String).returns(
       T.nilable(LoadedMedia),

app/lib/loaded_media/static_image.rb

@@ -5,6 +5,12 @@ class LoadedMedia::StaticImage < LoadedMedia
   sig { params(media_path: String).void }
   def initialize(media_path)
     @vips_image = T.let(Vips::Image.new_from_file(media_path), Vips::Image)
+  rescue Vips::Error => e
+    if e.message.include?("does not exist")
+      raise LoadedMedia::FileNotFound.new(e)
+    end
+
+    raise
   end
 
   sig { override.returns(Integer) }