esh-pfi-infrastructure/persistent-memory.d/2026-09-17-the-beat-contamination-leak-is-present-in-hemingway-70-of-7.md

[2026-09-17] The beat-contamination leak IS present in Hemingway — 70 of 7,094 train beats (0.96%), 0 of 200 val.

⭐ The beat-contamination leak IS present in Hemingway — 70 of 7,094 train beats (0.96%), 0 of 200 val. scripts/r49-corpus/audit_pairs_sourcenames.py closes the blind spot leak_gate.py has by construction (it reads the corpus and the renamed copies, never the generated beats). Cross-validated on real data: the fixed Brontë pairs return 0 of 3,858 and pairs-full.CONTAMINATED returns 15 of 792 = 1.89% with the recorded names. --filter-out yields a verified-clean 7,024-pair set in one command; the retrain is the operator's call. The val split being clean is why the gate could run at all.