Add evidence context policy preparation

internal/framework/pipeline/output_registry_test.go

@@ -1,6 +1,7 @@
 package pipeline
 
 import (
+	"reflect"
 	"testing"
 
 	"gitea.maximumdirect.net/eric/notarius/internal/framework/contracts"
@@ -56,3 +57,33 @@ func TestOutputEncoderRegistryBehavior(t *testing.T) {
 		},
 	})
 }
+
+func TestOutputProfileValidationReceivesOwnedOptionsAndLaneIDs(t *testing.T) {
+	registry := NewOutputEncoderRegistry()
+	if err := registry.RegisterBuilderWithProfileValidation(defaultModuleSpec("profile-output", StageOutput), func(options map[string]any) error {
+		options["nested"].(map[string]any)["value"] = "changed"
+		return nil
+	}, func(context OutputProfileOptionContext, options map[string]any) error {
+		context.LaneIDs[0] = "changed"
+		options["nested"].(map[string]any)["value"] = "changed-again"
+		return nil
+	}, func(BuildRequest) (contracts.OutputEncoder, error) {
+		return registryOutputEncoder{key: "profile-output"}, nil
+	}); err != nil {
+		t.Fatal(err)
+	}
+	options := map[string]any{"nested": map[string]any{"value": "original"}}
+	if err := registry.ValidateOptions("profile-output", options); err != nil {
+		t.Fatal(err)
+	}
+	context := OutputProfileOptionContext{LaneIDs: []string{"artifact"}}
+	if err := registry.ValidateProfileOptions("profile-output", context, options); err != nil {
+		t.Fatal(err)
+	}
+	if got := options["nested"].(map[string]any)["value"]; got != "original" {
+		t.Fatalf("options mutated by validator: %q", got)
+	}
+	if want := []string{"artifact"}; !reflect.DeepEqual(context.LaneIDs, want) {
+		t.Fatalf("lane ids mutated by validator: %#v, want %#v", context.LaneIDs, want)
+	}
+}