Task status model + default task status generation

app/jobs/projects/post_init_job.rb

@@ -0,0 +1,25 @@
+# frozen_string_literal: true
+
+module Projects
+  class PostInitJob < ApplicationJob
+    queue_as :default
+
+    include Projects::CreateDefaultTaskStatuses
+
+    def perform(project_id)
+      project = Project.preparing.find(project_id)
+
+      project.transaction do
+        create_tasks_number_sequence(project)
+        create_default_task_statuses(project)
+        project.update!(status: :ready)
+      end
+    end
+
+    private
+
+    def create_tasks_number_sequence(project)
+      Project.connection.execute "CREATE SEQUENCE IF NOT EXISTS #{project.tasks_number_sequence_name} AS INT UNSIGNED"
+    end
+  end
+end