FORT LAUDERDALE, Fla.—On Saturday, authorities raised the confirmed death toll from the collapse of a Miami-area condominium tower to 86, with 43 people still missing. At the Seaview Hotel, a vast and once impersonal ballroom has become a refuge—a shared space of hope and sorrow where grieving families comfort each other during the agonizing wait for news of relatives trapped inside the collapsed Champlain Towers South condominium building in Surfside, Florida. Twice a day, every day, for more than two weeks, relatives of the victims have huddled in the spacious room, a new daily routine thrust upon them by an unfathomable disaster. Many members of this tiny community forged in tragedy have started arriving to the meetings early and staying late. They linger in small groups, talking. They hug each other, bring each other water and tissues. On days when information is scarce, rescuers, including those from other countries, circulate …