Integrazione YouTube Live: OAuth squadra, canale piattaforma Light e UI.

Collegamento da Dettagli squadra e admin per il refresh token Match Live TV; API e app mobile allineate ai piani Light/Full.

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

backend/app/services/youtube/channel_info.rb

@@ -0,0 +1,18 @@
+module Youtube
+  class ChannelInfo
+    def self.fetch(access_token:)
+      service = Google::Apis::YoutubeV3::YouTubeService.new
+      service.authorization = access_token
+      resp = service.list_channels("snippet", mine: true, max_results: 1)
+      item = resp.items&.first
+      return { channel_id: nil, channel_title: nil } unless item
+
+      {
+        channel_id: item.id,
+        channel_title: item.snippet&.title
+      }
+    rescue Google::Apis::Error
+      { channel_id: nil, channel_title: nil }
+    end
+  end
+end