Allinea i KPI su due righe e aggiunge lo storico orario degli invii confermati.

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

test/services/mailings/hourly_throughput_test.rb

@@ -46,6 +46,26 @@ class Mailings::HourlyThroughputTest < ActiveSupport::TestCase
     assert_equal 1, stats.recent_sent
   end
 
+  test "builds twelve hourly buckets of confirmed sends" do
+    now = Time.zone.parse("2026-09-07 12:40")
+    travel_to now do
+      add_recipient status: "sent", sent_at: now - 20.minutes
+      add_recipient status: "sent", sent_at: now - 70.minutes, mailing: extra_mailing("Ore 11")
+      add_recipient status: "sent", sent_at: now - 80.minutes, mailing: extra_mailing("Ore 11 bis")
+      add_recipient status: "sent", sent_at: now - 13.hours, mailing: extra_mailing("Fuori finestra")
+
+      stats = Mailings::HourlyThroughput.new(@project, now: now)
+      history = stats.hourly_history
+
+      assert_equal 12, history.size
+      assert_equal now.beginning_of_hour, history.last[:at]
+      assert_equal 1, history.last[:count]
+      assert_equal 2, history[-2][:count]
+      assert_equal 0, history.first[:count]
+      assert_equal 3, stats.history_total
+    end
+  end
+
   private
 
   def extra_mailing(name = "Altra campagna")