Spec 5b (source: Golz et al. 2018 intro citing Behrens et al. 2014), copier
agents in estatesim.py, E3f alpha x cap x copy sweep with a computed
paired-interval verdict, 10 tests. Result: with copying the cap does not
reduce effective concentration. Earlier results.md sections unchanged.
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>