Fases 7 e 8 — PDFs Prawn + QR + Painel Motorista + Notificações

config/initializers/smtp.rb

@@ -0,0 +1,17 @@
+# config/initializers/smtp.rb
+# Configuração de e-mail 100% via ENV — só ativa se SMTP_USERNAME existir
+if ENV['SMTP_USERNAME'].present?
+  Rails.application.config.action_mailer.delivery_method = :smtp
+  Rails.application.config.action_mailer.smtp_settings = {
+    address:              ENV['SMTP_ADDRESS'],
+    port:                 ENV.fetch('SMTP_PORT', 587).to_i,
+    user_name:            ENV['SMTP_USERNAME'],
+    password:             ENV['SMTP_PASSWORD'],
+    domain:               ENV['SMTP_DOMAIN'],
+    authentication:       'plain',
+    enable_starttls_auto: true
+  }
+  Rails.application.config.action_mailer.default_url_options = {
+    host: ENV.fetch('APP_HOST', 'localhost:3000')
+  }
+end