refactor: do not generate user journeys when they are not used

Arguably these user journeys may be nice to show in the UI of individual
apps, but without any testing there, it doesn't make sense to generate
them and consume more tokens.

Author: devversion

runner/orchestration/generate.ts

@@ -322,23 +322,24 @@ async function startEvaluationTask(
       break;
     }
 
-    const userJourneys = await generateUserJourneysForApp(
-      ratingLlm,
-      rootPromptDef.name,
-      defsToExecute[0].prompt,
-      initialResponse.files,
-      abortSignal,
-    );
+    const userJourneys = config.enableUserJourneyTesting
+      ? await generateUserJourneysForApp(
+          ratingLlm,
+          rootPromptDef.name,
+          defsToExecute[0].prompt,
+          initialResponse.files,
+          abortSignal,
+        )
+      : undefined;
 
     // TODO: Only execute the serve command on the "final working attempt".
     // TODO: Incorporate usage.
-    const userJourneyAgentTaskInput: BrowserAgentTaskInput | undefined =
-      config.enableUserJourneyTesting
-        ? {
-            userJourneys: userJourneys.result,
-            appPrompt: defsToExecute[0].prompt,
-          }
-        : undefined;
+    const userJourneyAgentTaskInput: BrowserAgentTaskInput | undefined = userJourneys
+      ? {
+          userJourneys: userJourneys.result,
+          appPrompt: defsToExecute[0].prompt,
+        }
+      : undefined;
 
     const attemptDetails: AttemptDetails[] = []; // Store details for assessment.json