compare M4.7 threat parity by component identity

src/k1link/perception/reference_graph_parity.py

@@ -134,10 +134,15 @@ def compare_reference_graph_to_accepted_ledgers(
             ]
             if observed_camera_uncertainty != expected_camera_uncertainty:
                 mismatch["camera_uncertainty"] += 1
-            if [item.to_dict() for item in delivery.threats] != _array(
-                threat,
-                "assessments",
-            ):
+            observed_assessments = _assessment_index(
+                [item.to_dict() for item in delivery.threats],
+                "graph threat assessments",
+            )
+            expected_assessments = _assessment_index(
+                _array(threat, "assessments"),
+                "accepted threat assessments",
+            )
+            if observed_assessments != expected_assessments:
                 mismatch["threat_assessments"] += 1
             compared += 1
         if temporal_stream.readline() or threat_stream.readline():
@@ -204,6 +209,19 @@ def _boolean(document: dict[str, object], key: str) -> bool:
     return value
 
 
+def _assessment_index(
+    rows: list[dict[str, object]],
+    label: str,
+) -> dict[str, dict[str, object]]:
+    indexed: dict[str, dict[str, object]] = {}
+    for row in rows:
+        component_id = _string(row, "component_id")
+        if component_id in indexed:
+            raise ReferenceGraphParityError(f"{label} contains a duplicate component")
+        indexed[component_id] = row
+    return indexed
+
+
 __all__ = [
     "REFERENCE_GRAPH_PARITY_SCHEMA",
     "ReferenceGraphParityError",