Aggiunge modulo Replay, Garage dev e YouTube a livello società.

Pipeline registrazione/upload con storage S3, archivio web e app, proxy replay
per il browser, OAuth YouTube sulla pagina club (Premium Full) e footer legale.

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

backend/db/migrate/20260528140000_replay_enhancements.rb

@@ -0,0 +1,16 @@
+class ReplayEnhancements < ActiveRecord::Migration[7.2]
+  def change
+    change_table :recordings, bulk: true do |t|
+      t.jsonb :metadata, null: false, default: {}
+      t.string :thumbnail_storage_key
+      t.integer :view_count, null: false, default: 0
+      t.datetime :ready_notified_at
+      t.datetime :expiry_warning_sent_at
+      t.string :youtube_video_id
+      t.datetime :youtube_published_at
+    end
+
+    add_index :recordings, :view_count
+    add_index :recordings, :youtube_video_id, where: "youtube_video_id IS NOT NULL"
+  end
+end