CRIU #3127 diagnostics. See summary.json for the outcome and failure stage.
sandbox-before-dump/mountinfo is captured from the parked Python PID 1.
commands.json contains exact argv; each run uses a fresh local checkpoint.
Synthetic workspace and minimal environment; no .env or process environ collected.
Archive excludes checkpoint images. Logs include host paths, IDs and mount layout.
Reproducer uses the spike's extra read-only Python project mount, matching the
original report; this is not a full production deployment or isolation test.
