Aggiunge i tornei con hub, pagina pubblica e tabellone per semifinali e finali.

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

backend/app/views/public/tournament_pages/index.html.erb

@@ -0,0 +1,20 @@
+<% content_for :title, t("tournaments.directory.meta_title") %>
+<% content_for :meta_description, t("tournaments.directory.meta_description") %>
+<% content_for :canonical_url, seo_absolute_url(public_tournament_pages_path) %>
+
+<div class="wrap team-directory">
+  <h1><%= t("tournaments.directory.heading") %></h1>
+  <p class="results-hint"><%= t("tournaments.directory.hint") %></p>
+
+  <% if @tournaments.any? %>
+    <div class="team-directory-grid">
+      <% @tournaments.each do |tournament| %>
+        <%= render "public/tournament_pages/directory_card", tournament: tournament %>
+      <% end %>
+    </div>
+  <% else %>
+    <div class="empty-state empty-state--soft">
+      <p><strong><%= t("tournaments.directory.empty") %></strong></p>
+    </div>
+  <% end %>
+</div>