feat(lab): measure RAVNOVES00 R1 quality baseline

tests/test_e38_perception_baseline.py

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+from __future__ import annotations
+
+from k1link.compute.e38_perception_baseline import (
+    _dimension_metrics,
+    _predict_tree,
+    _train_tree,
+)
+
+
+def test_e38_cart_is_deterministic_and_respects_minimum_leaf() -> None:
+    rows = [
+        ({"score": 0.1, "support": 0.0}, "background"),
+        ({"score": 0.2, "support": 1.0}, "background"),
+        ({"score": 0.7, "support": 3.0}, "object"),
+        ({"score": 0.8, "support": 4.0}, "object"),
+        ({"score": 0.9, "support": 5.0}, "object"),
+        ({"score": 1.0, "support": 6.0}, "object"),
+    ]
+    first = _train_tree(
+        rows,
+        feature_names=["score", "support"],
+        max_depth=3,
+        min_leaf=2,
+    )
+    second = _train_tree(
+        rows,
+        feature_names=["score", "support"],
+        max_depth=3,
+        min_leaf=2,
+    )
+    assert first == second
+    assert _predict_tree(first, {"score": 0.15, "support": 1.0}) == "background"
+    assert _predict_tree(first, {"score": 0.85, "support": 4.0}) == "object"
+
+
+def test_e38_dimension_metrics_do_not_blend_strata() -> None:
+    rows = [
+        {
+            "source_stratum": "agree",
+            "prediction": {"presence": "object-present"},
+            "reference": {"presence": "object-present"},
+        },
+        {
+            "source_stratum": "agree",
+            "prediction": {"presence": "object-present"},
+            "reference": {"presence": "background-or-noise"},
+        },
+        {
+            "source_stratum": "geometry-only",
+            "prediction": {"presence": "occupied-environment"},
+            "reference": {"presence": "occupied-environment"},
+        },
+    ]
+    metrics = _dimension_metrics(rows, dimension="presence", target=0.9)
+    assert metrics["correct"] == 2
+    assert metrics["incorrect"] == 1
+    assert metrics["accuracy"] == 0.666667
+    assert metrics["passed"] is False
+    assert metrics["by_stratum"]["agree"]["accuracy"] == 0.5
+    assert metrics["by_stratum"]["geometry-only"]["accuracy"] == 1.0