Update evidence context output coverage

internal/modules/integration/dnd_location_registry_runner_test.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
+	"reflect"
 	"strings"
 	"sync"
 	"testing"
@@ -71,20 +72,17 @@ func TestLocationRegistryHandoffProducesOccurrencesAndEvidence(t *testing.T) {
 	if err != nil {
 		t.Fatalf("Decode(evidence context) error = %v", err)
 	}
-	if !locationEvidenceHasLane(evidence, "locations") || !locationEvidenceHasLane(evidence, "occurrences") {
-		t.Fatalf("evidence context = %#v, want registry and occurrence evidence from their own artifacts", evidence)
+	if actual := locationEvidenceUnitIDs(evidence); !reflect.DeepEqual(actual, []int{1, 2, 3, 4, 5}) {
+		t.Fatalf("evidence context = %#v, want deduplicated registry and occurrence source-unit evidence", evidence)
 	}
 }
 
-func locationEvidenceHasLane(document evidencecontext.Document, laneID string) bool {
-	for _, context := range document.Contexts {
-		for _, reference := range context.EvidenceRefs {
-			if reference.LaneID == laneID {
-				return true
-			}
-		}
+func locationEvidenceUnitIDs(document evidencecontext.Document) []int {
+	ids := make([]int, len(document))
+	for index, unit := range document {
+		ids[index] = unit.ID
 	}
-	return false
+	return ids
 }
 
 func TestLocationOccurrenceConsumerDoesNotRunAfterRejectedRegistry(t *testing.T) {