设计::无法通过rake db:seed创建用户（失败confirmation_instructions）

config.action_mailer.delivery_method = :smtp
config.action_mailer.smtp_settings = {
  address: "smtp.gmail.com",
  port: 587,
  domain: "example.com",
  user_name: "your_email@example.com",
  password: "your_password",
  authentication: "plain",
  enable_starttls_auto: true
}

config.mailer_sender = "noreply@example.com"
config.authentication_keys = [:email]
config.case_insensitive_keys = [:email]
config.strip_whitespace_keys = [:email]
config.confirm_within = 2.days
config.reconfirmable = true
config.password_length = 6..128
config.reset_password_within = 6.hours
config.sign_out_via = :delete

User.create(email: "user@example.com", password: "password", password_confirmation: "password")

user = User.last
user.send_confirmation_instructions