8508-03-24 test: panel+cap cut 70→3, losing ~22 genuine principles incl. the core Lustrenik betterment rule. Lesson: cap + novelty-filter is destructive for RAG (which needs applied doctrine). Quality-at-source = dedup+noise-only, no cap. PR#304 regime flagged for revision. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>