Sposta overlay video sull'app Android e rimuove ffmpeg server-side.

Il tabellone stile SportCam e il watermark Match Live TV sono bruciati in GPU via RootEncoder; sul backend spariscono OverlayRelay, job Sidekiq e volume stream_overlays.

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

backend/app/services/mediamtx/client.rb

@@ -12,21 +12,6 @@ module Mediamtx
       end
     end
 
-    def create_overlay_path(session)
-      path = session.mediamtx_overlay_path_name
-      body = {
-        source: "publisher",
-        overridePublisher: true,
-        record: false
-      }
-      response = @conn.post("/v3/config/paths/add/#{CGI.escape(path)}", body)
-      unless response.success?
-        err = response.body.is_a?(Hash) ? response.body["error"] : response.body
-        raise Error, "MediaMTX overlay path create failed: #{response.status} #{err}"
-      end
-      true
-    end
-
     def create_path(session)
       path = session.mediamtx_path_name
       # record: false finché non c'è publisher — con alwaysAvailable MediaMTX registrerebbe