Adds StatusError flags for the STATUS register and get_status_errors(); go() now reports if a fail-safe (safe-start violation or other error) persists after GO instead of failing silently. _on_process uses the same decoding to log any active error and only auto-recovers on a safe-start violation, rather than the old narrow status & limit_status heuristic. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01EU3NTwLygh8jkrnqPoHNXF