Club come entità principale, branding e fix infrastruttura streaming.

Introduce clubs con abbonamento, branding Active Storage e flusso registrazione società; corregge healthcheck MediaMTX (immagine distroless) e allinea dominio produzione matchlivetv.it.

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

backend/app/views/public/clubs/edit.html.erb

@@ -0,0 +1,17 @@
+<% content_for :title, "Modifica società — #{@club.name}" %>
+<% content_for :robots, "noindex, nofollow" %>
+
+<div class="wrap" style="padding-top:20px;max-width:560px">
+  <h1>Modifica società</h1>
+  <div class="card">
+    <%= form_with url: public_club_path(@club), method: :patch, multipart: true do %>
+      <%= label_tag "club[name]", "Nome società" %>
+      <%= text_field_tag "club[name]", @club.name, required: true %>
+      <%= label_tag "club[sport]", "Sport principale" %>
+      <%= select_tag "club[sport]", options_for_select([["Pallavolo", "volleyball"], ["Calcio", "football"], ["Basket", "basketball"]], @club.sport) %>
+      <%= render "shared/branding_fields", record: @club, legend: "Logo e colori societari" %>
+      <%= submit_tag "Salva", class: "btn btn-primary" %>
+    <% end %>
+  </div>
+  <p><%= link_to "← Società", public_club_path(@club) %></p>
+</div>