Changed admin user from 'michal' to generic 'lab' user. SSH key auth works for both root and lab user. 21/22 tests pass (1 skipped: log lines, needs log streamer redesign). Bisection complete — all features work except background log streamer which prevents Anaconda from syncing filesystem writes. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>