Adopt PromptKit layered configuration sources

internal/prompts/registry_test.go

@@ -5,15 +5,28 @@ import (
 	"strings"
 	"testing"
 
+	ck "gitea.maximumdirect.net/eric/ConfigKit"
 	"gitea.maximumdirect.net/eric/audita/internal/framework/responseschema"
 	pk "gitea.maximumdirect.net/eric/promptkit"
 )
 
 func TestEmbeddedDefinitionsPrepareThroughPromptKit(t *testing.T) {
-	engine, err := pk.NewEngine(pk.Config{},
-		pk.WithPromptFS(Filesystem(), AssetRoot),
+	promptInputs, err := pk.FilesystemInputs("embedded prompts", Filesystem(), AssetRoot)
+	if err != nil {
+		t.Fatal(err)
+	}
+	endpoint := "https://example.invalid/v1"
+	model := "fixture-model"
+	sources := pk.ConfigurationSources{
+		Underlays: []ck.Underlay{
+			{Inputs: promptInputs},
+			{Inputs: []ck.Input{{Source: pk.ProfileSource("registry fixture profile", map[string]pk.ProfileConfig{
+				"fixture": {Endpoint: &endpoint, Model: &model},
+			})}}},
+		},
+	}
+	engine, err := pk.NewEngine(pk.Config{Sources: sources},
 		pk.WithSchemaFS(responseschema.Filesystem(), responseschema.AssetRoot),
-		pk.WithProfiles(pk.Profile{ID: "fixture", Endpoint: "https://example.invalid/v1", Model: "fixture-model"}),
 	)
 	if err != nil {
 		t.Fatal(err)