Goal: extend the current smoke-test diagnostics into a conservative walk-forward protocol.
Acceptance checks:
- Explicit train/validation/test or rolling windows.
- Promotion gate includes OOS Rank IC, ICIR, coverage, turnover, and cost-adjusted return.
- Unit tests cover split boundaries and future-label leakage rejection.
Goal: extend the current smoke-test diagnostics into a conservative walk-forward protocol.
Acceptance checks: