Relics

Jonah Kellan is a salvage drone with a dwindling supply of battery cells and no use for causes. Then a buried server in a ruined Army depot coughs up a distress call from orbit: a failing station, a dying AI, and one human still frozen alive. Ninety-one days until she burns. The rescue needs a shuttle, two halves of an encryption key, and a thousand miles of country owned by a machine hive-mind that wants no human symbols left standing.