Align run provenance with PromptKit

internal/core/artifacts/artifacts_test.go

@@ -53,7 +53,7 @@ func TestRunManifestIncludesPipelineAndArtifactLaneFields(t *testing.T) {
 		PipelineID:     "pipeline-1",
 		PipelineDigest: "sha256:abc123",
 		LLMProfiles: []LLMProfileManifest{
-			{ID: "default", Provider: "scriptorium", Model: "model-a"},
+			{ID: "default", Provider: "promptkit", Model: "model-a"},
 		},
 		ArtifactLanes: []ArtifactLaneManifest{
 			{
@@ -102,6 +102,9 @@ func TestRunManifestIncludesPipelineAndArtifactLaneFields(t *testing.T) {
 		t.Fatalf("llm_profiles[0] = %#v, want object", profiles[0])
 	}
 	assertHasKeys(t, profile, "id", "provider", "model")
+	if profile["provider"] != "promptkit" {
+		t.Fatalf("llm_profiles[0].provider = %#v, want promptkit", profile["provider"])
+	}
 
 	lanes, ok := got["artifact_lanes"].([]any)
 	if !ok {