Configure PromptKit transient retries

internal/core/config/loaded_config_test.go

@@ -2,6 +2,7 @@ package config
 
 import (
 	"bytes"
+	"strconv"
 	"strings"
 	"testing"
 
@@ -58,6 +59,44 @@ pipelines:
 	}
 }
 
+func TestLoadedConfigResolvesPromptKitTransientRetriesAndRetainsInspection(t *testing.T) {
+	t.Parallel()
+
+	for _, test := range []struct {
+		name     string
+		document string
+		want     int
+	}{
+		{name: "omitted", document: "version: 5\n", want: defaultTransientRetries},
+		{name: "disabled", document: "version: 5\npromptkit:\n  transient_retries: 0\n", want: 0},
+		{name: "configured", document: "version: 5\npromptkit:\n  transient_retries: 5\n", want: 5},
+	} {
+		t.Run(test.name, func(t *testing.T) {
+			loaded, err := loadConfigSource(configkit.Bytes("document.yml", []byte(test.document)), LoadOptions{})
+			if err != nil {
+				t.Fatal(err)
+			}
+			if got := loaded.Config.PromptKit.TransientRetries; got != test.want {
+				t.Fatalf("transient retries = %d, want %d", got, test.want)
+			}
+			var effective bytes.Buffer
+			if err := loaded.WriteEffective(&effective); err != nil {
+				t.Fatal(err)
+			}
+			if !strings.Contains(effective.String(), "transient_retries: "+strconv.Itoa(test.want)) {
+				t.Fatalf("effective configuration = %q", effective.String())
+			}
+			var explanation bytes.Buffer
+			if err := loaded.WriteExplanation(&explanation, "/promptkit/transient_retries"); err != nil {
+				t.Fatal(err)
+			}
+			if !strings.Contains(explanation.String(), strconv.Itoa(test.want)) {
+				t.Fatalf("explanation = %q", explanation.String())
+			}
+		})
+	}
+}
+
 func TestLoadedConfigOwnsRuntimeValuesAndKeepsFrozenInspection(t *testing.T) {
 	t.Parallel()