A Grey Ship, and Full of Ghosts

Your Astronomical Survey vessel has found a wormhole to a new system. Circling one of the uninhabited planets is a mind-ship from a civilization that departed for higher space more than 3,000 years ago. Your task is to see if the mind can be brought back to a conscious state, and if not, to salvage what you can. Inspired by the Bitsy Ghost Ship Jam, although not completed in time to enter it and also by (among many others) Aliette de Bodard, J.R.R. Tolkien, Iain M. Banks, Lois McMaster Bujold, A...