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/jobs/generate_cover_slate_job.rb

@@ -0,0 +1,19 @@
+class GenerateCoverSlateJob < ApplicationJob
+  queue_as :default
+
+  def self.enqueue_for(record)
+    return unless record&.cover_image&.attached?
+
+    queue = record.is_a?(Match) ? :critical : :default
+    set(queue: queue).perform_later(record.class.name, record.id)
+  end
+
+  def perform(class_name, record_id)
+    record = class_name.constantize.find_by(id: record_id)
+    return unless record&.cover_image&.attached?
+
+    Streams::GenerateCoverSlate.call(record)
+  rescue Streams::GenerateCoverSlate::Error => e
+    Rails.logger.warn("[GenerateCoverSlateJob] #{class_name}##{record_id} #{e.message}")
+  end
+end