Add restore production dump rake task
user
```ruby
namespace :db do
  dump_file = 'tmp/latest.dump'

  def verify_exec(command)
    system(command)
    fail 'Command failed' unless $CHILD_STATUS.exitstatus.zero?
  end

  file dump_file do
    verify_exec 'heroku pg:backups capture --app novel'
    verify_exec "curl -o #{dump_file} `heroku pg:backups public-url -a novel`"
  end

  desc 'Download and restore prod db; requires heroku toolbelt and production db access'
  task restore_production_dump: dump_file do
    puts 'Restoring latest production data'
    verify_exec "pg_restore --verbose --clean --no-acl --no-owner #{dump_file} | rails dbconsole"
    puts 'Completed successfully!'
  end
end
```
assistant