Aggiunge pagamento con bonifico e importo concordato per società.

Il piano si attiva solo dopo la conferma admin; Stripe resta a listino se non c'è un prezzo commerciale.

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/app/mailers/billing/bank_transfer_mailer.rb

@@ -0,0 +1,35 @@
+module Billing
+  class BankTransferMailer < ApplicationMailer
+    def instructions
+      @order = params[:order]
+      @club = @order.club
+      @iban = MatchLiveTv.bank_transfer_iban
+      @holder = MatchLiveTv.bank_transfer_account_holder
+      @bank_name = MatchLiveTv.bank_transfer_bank_name
+      @bic = MatchLiveTv.bank_transfer_bic
+      @proof_email = MatchLiveTv.bank_transfer_proof_email
+
+      mail(
+        to: recipient_email,
+        subject: t("mailers.bank_transfer.instructions.subject", plan: @order.plan.name)
+      )
+    end
+
+    def plan_activated
+      @order = params[:order]
+      @club = @order.club
+      @subscription = @club.subscription
+
+      mail(
+        to: recipient_email,
+        subject: t("mailers.bank_transfer.plan_activated.subject", plan: @order.plan.name)
+      )
+    end
+
+    private
+
+    def recipient_email
+      @club.billing_email.presence || @club.owner&.email
+    end
+  end
+end