Aggiunge heatmaps first-party (click/scroll) con pagina admin Analytics.

Raccoglie eventi aggregati dietro consenso cookie, senza PII né tracking su admin/regia/live/replay; GA4 resta invariato.

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

backend/app/views/admin/analytics/index.html.erb

@@ -0,0 +1,70 @@
+<% content_for :body_class, "admin-body" %>
+
+<div class="admin-page-head">
+  <h2 class="admin-page-title"><%= t("admin.analytics.index.title") %></h2>
+  <p class="muted admin-page-sub"><%= t("admin.analytics.index.lead") %></p>
+</div>
+
+<div class="panel admin-sessions-filters">
+  <%= form_with url: admin_analytics_path, method: :get, local: true, class: "admin-filter-form" do %>
+    <div class="admin-filter-grid">
+      <label class="admin-filter-field">
+        <span><%= t("admin.analytics.filters.from") %></span>
+        <%= date_field_tag :from, @filters[:from] %>
+      </label>
+      <label class="admin-filter-field">
+        <span><%= t("admin.analytics.filters.to") %></span>
+        <%= date_field_tag :to, @filters[:to] %>
+      </label>
+      <label class="admin-filter-field">
+        <span><%= t("admin.analytics.filters.device") %></span>
+        <%= select_tag :device,
+              options_for_select(
+                [[t("admin.analytics.filters.any"), ""]] + AnalyticsEvent::DEVICES.map { |d| [d, d] },
+                @filters[:device]
+              ) %>
+      </label>
+    </div>
+    <div class="admin-filter-actions">
+      <%= submit_tag t("admin.analytics.filters.apply"), class: "admin-btn admin-btn--primary admin-btn--sm" %>
+      <%= link_to t("admin.analytics.filters.reset"), admin_analytics_path, class: "admin-btn admin-btn--outline admin-btn--sm" %>
+    </div>
+  <% end %>
+</div>
+
+<div class="panel">
+  <% if @pages.any? %>
+    <div class="admin-table-wrap">
+      <table class="admin-table">
+        <thead>
+          <tr>
+            <th><%= t("admin.analytics.index.table.path") %></th>
+            <th><%= t("admin.analytics.index.table.pageviews") %></th>
+            <th><%= t("admin.analytics.index.table.clicks") %></th>
+            <th><%= t("admin.analytics.index.table.avg_scroll") %></th>
+            <th><%= t("admin.analytics.index.table.max_scroll") %></th>
+            <th></th>
+          </tr>
+        </thead>
+        <tbody>
+          <% @pages.each do |row| %>
+            <% avg = row[:scroll_samples].positive? ? (row[:scroll_sum].to_f / row[:scroll_samples]).round : 0 %>
+            <tr>
+              <td><code class="admin-mono"><%= row[:page_path] %></code></td>
+              <td><%= row[:pageviews] %></td>
+              <td><%= row[:clicks] %></td>
+              <td class="muted"><%= avg %>%</td>
+              <td class="muted"><%= row[:max_scroll] %>%</td>
+              <td>
+                <%= link_to t("admin.analytics.index.heatmap"),
+                      admin_analytics_page_path(page_path: row[:page_path], from: @filters[:from], to: @filters[:to], device: @filters[:device]) %>
+              </td>
+            </tr>
+          <% end %>
+        </tbody>
+      </table>
+    </div>
+  <% else %>
+    <p class="empty"><%= t("admin.analytics.index.none") %></p>
+  <% end %>
+</div>