fix(dossiers): add processed_at to processed dossiers

lib/tasks/deployment/20211110093332_set_dossiers_processed_at.rake

@@ -0,0 +1,22 @@
+namespace :after_party do
+  desc 'Deployment task: set_dossiers_processed_at'
+  task set_dossiers_processed_at: :environment do
+    puts "Running deploy task 'set_dossiers_processed_at'"
+
+    dossiers = Dossier.termine.includes(:traitement)
+    progress = ProgressReport.new(dossiers.count)
+
+    dossiers.find_each do |dossier|
+      if dossier.processed_at != dossier.traitement.processed_at
+        dossier.update_column(:processed_at, dossier.traitement.processed_at)
+      end
+      progress.inc
+    end
+    progress.finish
+
+    # Update task as completed.  If you remove the line below, the task will
+    # run with every deploy (or every time you call after_party:run).
+    AfterParty::TaskRecord
+      .create version: AfterParty::TaskRecorder.new(__FILE__).timestamp
+  end
+end