Add indicator for processed messages

app/controllers/completions_controller.rb

@@ -70,6 +70,6 @@ class CompletionsController < ApplicationController
   end
 
   def completion_params
-    params.expect(completion: [ :display_time_from_start, :contestant_id, :puzzle_id ])
+    params.expect(completion: [ :display_time_from_start, :contestant_id, :message_id, :puzzle_id ])
   end
 end

app/controllers/concerns/completions_concern.rb

@@ -26,6 +26,6 @@ module CompletionsConcern
                         display_relative_time: display_time(completion.time_seconds - current_time_from_start))
       current_time_from_start = completion.time_seconds
     end
-    contestant.update(display_time: display_time(current_time_from_start))
+    contestant.update(display_time: display_time(current_time_from_start), time_seconds: current_time_from_start)
   end
 end