sweep.py runs every root CHECK-* under bash and records rc, class and the
process's last line, pinning rev + sha256 of each entry in manifest.json.
report.md is the table; TRIAGE.md groups the 12 reds into four causes.
check-root-sweep.sh grades the record (pin / universe / class contract /
report parity / rows integrity), 5 legs, with sensitivity_probe.py proving
three mutations redden the leg that owns them and the restore is green.
ledger
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