Aggiunge replay YouTube temporaneo, pull registrazioni dai CPX e snapshot ingest in admin.

Così overflow Hetzner e VOD YouTube restano in archivio dopo lo spegnimento del nodo, e la colonna ingest non si svuota.

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

backend/app/views/admin/sessions/show.html.erb

@@ -162,12 +162,20 @@
       <div>
         <dt><%= t("admin.sessions.show.fields.node") %></dt>
         <dd>
-          <% if @session.stream_node %>
-            <code><%= @session.stream_node.slug %></code>
-            <span class="badge <%= admin_session_ingest_badge_class(@session.stream_node) %>">
-              <%= admin_session_ingest_role_label(@session.stream_node) %>
-            </span>
-            <span class="muted">(<%= @session.stream_node.provider %>)</span>
+          <% slug = @session.ingest_slug_display %>
+          <% role = @session.ingest_role_display %>
+          <% if slug.present? %>
+            <code><%= slug %></code>
+            <% if role.present? %>
+              <span class="badge <%= admin_session_ingest_badge_class(role) %>">
+                <%= admin_session_ingest_role_label(role) %>
+              </span>
+            <% end %>
+            <% if @session.stream_node %>
+              <span class="muted">(<%= @session.stream_node.provider %>)</span>
+            <% else %>
+              <span class="muted"><%= t("admin.sessions.ingest.decommissioned") %></span>
+            <% end %>
           <% else %>
             <span class="muted"><%= t("admin.sessions.ingest.none") %></span>
           <% end %>