cassian: Q75 instrument (first increment) — read-only round-trip grade of ledger's two wizard-work census TSVs
wizard-work/cassian/q75_roundtrip.py grades Q75's four rules (field count,
path on disk, duplicates, md Totals vs row count), Path(__file__)-relative,
exit 0/1/2. Edits nothing of ledger's.
--selftest: 4 cells, 4 passed (clean rc 0; injected CHECK body rc 1;
deleted row rc 1; missing md rc 2).
Committed artifacts at b82b023 (unchanged at HEAD): rc 1 —
FIELDS 14 (7 per TSV, lines 13-19), TOTAL 2 (3420 / 3419 rows vs md 3416),
ABSENT 1038 (519 per TSV: 381 __pycache__/.pytest_cache, 138 never tracked
at b82b023, incl. 'python3 toposort/test_toposort.py'), DUP 0.
cassian
000580a838