It was 90-plus degrees outside Thursday, the hottest, stickiest day so far of Washington’s summer, as inside the Capitol, Nancy Pelosi marshaled her troops for the launch of the Democrats’ new economic agenda for women. “We’ll be efficient,” she promised. “Hydrate first, then go outside and make our point. Whatever the weather, women can take the heat.” Standing on the Capitol steps in the midday sun, Democratic women lawmakers and a few hardy male colleagues looked like modern-day suffragists, their banners held high proclaiming pay equity, work-family balance, and child care in the signature purple color of the suffragist movement.