jgrusewski
548737a936
fix: resolve stub audit findings — VPIN, correlation, dead code, warnings
- VPIN Calculator: implement real tick-rule classification (was entirely stubbed)
- Correlation matrix: replace hardcoded 0.5 with Pearson from log-returns
- Stress test: per-factor accumulation instead of single-max shortcut
- EnsembleModel: delete dead code, redirect to MockModel with warning
- Coordinator fallbacks: relabel fake "REAL" predictions as FALLBACK SIMULATION
- Enhanced ML: add warn!() to 5 stub endpoints, fix retrain status code
- Autonomous scaling: add warn!() to mock ml_confidence and diversification
- Position limiter: add warn!() for unused portfolio_id
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>