Permette di filtrare il grafico analytics su una singola pagina.

Aggiunge il filtro Pagina (grafico) e il link Grafico in tabella, mantenendo Da/A/Device.

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

backend/spec/requests/admin/analytics_spec.rb

@@ -70,6 +70,26 @@ RSpec.describe "Admin analytics", type: :request do
     expect(response.body).to include("\"pageviews\":19")
   end
 
+  it "filtra il grafico su una sola pagina" do
+    AnalyticsPageStat.create!(
+      day: Time.zone.today,
+      page_path: "/altro",
+      device: "desktop",
+      pageview_count: 7,
+      scroll_samples: 0,
+      scroll_sum_pct: 0,
+      max_scroll_pct: 0
+    )
+
+    get admin_analytics_path, params: { chart_path: "/prezzi" }
+    expect(response).to have_http_status(:ok)
+    expect(response.body).to include(I18n.t("admin.analytics.index.trend_total_label_path"))
+    expect(response.body).to include(">12<")
+    expect(response.body).to include(I18n.t("admin.analytics.index.chart_for_path"))
+    expect(response.body).to include("is-chart-focus")
+    expect(response.body).not_to include(">19<")
+  end
+
 
   it "mostra la heatmap di una pagina con tab dispositivo" do
     get admin_analytics_page_path, params: { page_path: "/prezzi" }