Add limited post STL support

app/services/fan_out_on_write_service.rb

@@ -57,6 +57,7 @@ class FanOutOnWriteService < BaseService
     when :limited
       deliver_to_lists_mentioned_accounts_only!
       deliver_to_antennas! unless @account.dissubscribable
+      deliver_to_stl_antennas!
       deliver_to_mentioned_followers!
     else
       deliver_to_mentioned_followers!

spec/services/fan_out_on_write_service_spec.rb

@@ -162,6 +162,24 @@ RSpec.describe FanOutOnWriteService, type: :service do
         expect(antenna_feed_of(empty_antenna)).to_not include status.id
       end
     end
+
+    context 'with STL antenna' do
+      let!(:antenna) { antenna_with_options(bob, stl: true) }
+      let!(:empty_antenna) { antenna_with_options(ohagi, stl: true) }
+
+      it 'is added to the antenna feed of antenna follower' do
+        expect(antenna_feed_of(antenna)).to include status.id
+        expect(antenna_feed_of(empty_antenna)).to_not include status.id
+      end
+    end
+
+    context 'with LTL antenna' do
+      let!(:empty_antenna) { antenna_with_options(bob, ltl: true) }
+
+      it 'is added to the antenna feed of antenna follower' do
+        expect(antenna_feed_of(empty_antenna)).to_not include status.id
+      end
+    end
   end
 
   context 'when status is private' do