Aggiunge copertina sponsor custom solo Premium Full, con override in wizard e slate sui nodi di streaming.

Permette upload da portale e app con ereditarietà partita→squadra→società, generazione MP4 via ffmpeg e distribuzione su home lab e nodi CPX per pause e assenza segnale.

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

backend/app/controllers/concerns/api/cover_json.rb

@@ -0,0 +1,16 @@
+module Api
+  module CoverJson
+    extend ActiveSupport::Concern
+
+    private
+
+    def match_cover_json(match)
+      resolver = Streams::CoverResolver.new(match)
+      {
+        effective_cover_url: api_absolute_url(resolver.effective_cover_url),
+        cover_source: resolver.cover_source,
+        custom_cover_enabled: match.team.entitlements.can_use_custom_cover?
+      }
+    end
+  end
+end