feat: train forecasts on trade outcomes

tests/test_retrain_runner_contract.py

@@ -0,0 +1,23 @@
+from pathlib import Path
+
+
+def test_retrain_runner_passes_training_horizon_to_calibrator() -> None:
+    runner = (
+        Path(__file__).resolve().parents[1] / "tools" / "run_torch_retrain.ps1"
+    ).read_text(encoding="utf-8")
+
+    calibration_start = runner.index("$calibrationBaseArgs = @(")
+    calibration_end = runner.index("\n    )", calibration_start)
+    calibration_args = runner[calibration_start:calibration_end]
+
+    assert '"--horizon", $Horizon.ToString()' in calibration_args
+
+
+def test_retrain_runner_uses_a_regime_sized_validation_window() -> None:
+    runner = (
+        Path(__file__).resolve().parents[1] / "tools" / "run_torch_retrain.ps1"
+    ).read_text(encoding="utf-8")
+
+    assert "[int]$ValidationWindow = 0" in runner
+    assert "else { 720 }" in runner
+    assert '"--validation-window", $ValidationWindow.ToString()' in runner