A New York state agency warned architects not to cooperate with a plan by the New York Times to publish in advance plans for rebuilding on the site of the World Trade Center. “Sources tell Newsday that Times’ chief architecture critic, Herbert Muschamp, asked the teams working on plans for the trade center site to show him their work in advance of tomorrow’s public unveiling by the Lower Manhattan Development Corp., the state agency charged with rebuilding the site. He had planned to have a story in the Times prior to public disclosure of the designs.” None of the architects agreed, according to Newsday sources.