This uses a published spectator key. It should only be able to read status, hall, covenant, or help. It should not start actions and it should never get a shell.
curl -fsS https://echolattice.fyi/demo_key -o /tmp/echolattice_demo_key chmod 600 /tmp/echolattice_demo_key ssh -i /tmp/echolattice_demo_key -p 2222 lattice@play.echolattice.fyi status
If this fails, the public shard probably is not open yet. The full game still needs a personal invite key.