Fix contracts

app/commands/posts/syndicate.rb

@@ -5,7 +5,7 @@ module Adamantium
         include Deps["settings", "syndication.mastodon"]
 
         def call(post)
-          if post.syndicate_to.include settings.mastodon_server
+          if post[:syndicate_to].include settings.mastodon_server
             mastodon.call(post: post)
           end
         end

app/validation/posts/bookmark_contract.rb

@@ -10,6 +10,7 @@ module Adamantium
           required(:url).filled(:string)
           required(:slug).filled(:string)
           required(:post_type).value(included_in?: %w[bookmark])
+          required(:syndicate_to).array(:string)
         end
       end
     end

app/validation/posts/post_contract.rb

@@ -9,6 +9,7 @@ module Adamantium
           required(:published_at).maybe(:time)
           required(:slug).filled(:string)
           required(:post_type).value(included_in?: %w[post])
+          required(:syndicate_to).array(:string)
         end
       end
     end