Cut over public engine construction to ConfigKit sources

output_contract_contract_test.go

@@ -6,13 +6,14 @@ import (
 	"testing"
 
 	"gitea.maximumdirect.net/eric/promptkit"
+	"gitea.maximumdirect.net/eric/promptkit/testfixture"
 )
 
 func TestPreparationRejectsInvalidOutputContractWithPublicError(t *testing.T) {
-	engine, err := promptkit.NewEngine(
-		promptkit.Config{},
-		promptkit.WithPromptFS(contractPromptFS("prompt", "profile", "message"), "."),
-		promptkit.WithProfiles(promptkit.Profile{
+	engine, err := testfixture.NewEngine(
+		testfixture.Config{},
+		testfixture.WithPromptFS(contractPromptFS("prompt", "profile", "message"), "."),
+		testfixture.WithProfiles(testfixture.Profile{
 			ID:       "profile",
 			Endpoint: "http://example.test/v1",
 			Model:    "model",