Comprehensive report comparing IS (2021-2022), OOS (2023), and 2025
performance across all 4 Phase 2 strategies. Includes per-trade logs,
period comparison tables, and root cause analysis for each strategy's
2025 performance. Key finding: only S3 survived, high Phase 2
generalization scores correlated with regime sensitivity not robustness.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>