Once, in a market by the sea, they found a new Exchange tent, its sign half-peeled by salt. Inside, the woman who ran it was older, and she listened thicker to stories than to tokens. They traded a promise—a vow to send news should they find a map that refused to lie. In exchange, the woman pressed into Arin’s hand a small brass lid, etched with the same name as the stone marker on the hill. “For what you carry home,” she said.