box/fleet/tasks/pending/218-restore-root-authorized_keys-from-persistent-.md

218-restore-root-authorized_keys-from-persistent-: Restore root authorized_keys from persistent mount

Goal: Copy /home/hatch/.ssh/authorized_keys to /root/.ssh/authorized_keys and update recover-after-rebuild.sh to preserve it.

Steps:

1. Claim task on feature branch builder/restore-root-authorized_keys-from-persistent-.
2. Implement solution adhering to test coverage.
3. Commit with "Fixes #218" and push to master/PR.

Done criteria: result notes appended below; file moved to done/.

Result notes (append below before moving to done/):