Billing Stripe, link regia mobile e staff solo trasmissione.

Aggiunge fatturazione club, pagina regia condivisibile senza account, roster squadre e rimuove la modalità controller dall'app (v1.1.0).

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

backend/app/controllers/admin/billing_invoices_controller.rb

@@ -0,0 +1,50 @@
+module Admin
+  class BillingInvoicesController < BaseController
+    before_action :set_club
+
+    def index
+      @invoices = @club.billing_invoices.recent
+    end
+
+    def new
+      @invoice = @club.billing_invoices.build(issued_on: Date.current, currency: "eur", source: "aruba")
+    end
+
+    def create
+      @invoice = @club.billing_invoices.build(invoice_params)
+      @invoice.source = "aruba"
+
+      if @invoice.save
+        redirect_to admin_club_billing_invoices_path(@club), notice: "Fattura #{@invoice.number} registrata."
+      else
+        flash.now[:alert] = @invoice.errors.full_messages.join(", ")
+        render :new, status: :unprocessable_entity
+      end
+    end
+
+    private
+
+    def set_club
+      @club = Club.find(params[:club_id])
+    end
+
+    def invoice_params
+      params.require(:billing_invoice).permit(
+        :number,
+        :issued_on,
+        :amount_cents,
+        :amount_euros,
+        :currency,
+        :status,
+        :aruba_document_id,
+        :billing_payment_id,
+        :notes,
+        :pdf
+      ).tap do |p|
+        if p[:amount_euros].present?
+          p[:amount_cents] = (p.delete(:amount_euros).to_f * 100).round
+        end
+      end
+    end
+  end
+end