Add walk-forward dashboard mode and a full robustness suite - #15
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- Backtest/Walk-forward mode switch in the dashboard, with its own sidebar, live progress bar, and a Gross vs Net results section. - Backtest mode exposes missing_value_policy, volume-based slippage, and portfolio exposure/turnover/position caps. - Robustness tab: bootstrap, permutation test, and parameter sensitivity, individually or via "Run all" — attached to the HTML report. In Walk-forward mode, stress tests and sensitivity re-run the whole walk-forward selection process, not a plain backtest. - CLI: stress-test, bootstrap, permutation-test, sensitivity, and a robustness orchestrator, driven by a config's new `robustness:` block. - Dashboard captions explaining how to read bootstrap/permutation output. - Add Semgrep (p/ci ruleset) to pre-commit. - Fixes: CLI robustness commands no longer overwrite each other's saved artifacts; walk-forward OOS results are labelled correctly in reports instead of "full-sample"; smoother, more accurate progress-bar ETA.
…hardening - Checkpoint/resume for walk-forward, stress-test and sensitivity runs (CLI and dashboard): progress is saved to disk as it goes, so an interruption (Ctrl+C, crash, restart) resumes instead of starting over. New `--fresh` flag to discard a checkpoint and start clean. - Live progress bar with ETA in the terminal too (walk-forward, stress-test, sensitivity, robustness), matching the dashboard's estimate. - Pin GitHub Actions to commit SHAs and add a Dependabot cooldown, per Semgrep CI findings. - Fix: a walk-forward report-regeneration test depended on the ambient git state instead of pinning it, so it failed on any non-clean checkout.
…d-dashboard-expansion # Conflicts: # .github/workflows/semgrep.yml
…g and dashboard expansion
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robustness:block.