fix: log mid-stream errors to transcript, notes on retrieving

src/headless.ts

@@ -183,6 +183,10 @@ export async function handleHeadlessCommand(argv: string[]) {
       }
 
       // Unexpected stop reason
+      // TODO: For error stop reasons (error, llm_api_error, etc.), fetch step details
+      // using lastRunId to get full error message from step.errorData
+      // Example: client.runs.steps.list(lastRunId, { limit: 1, order: "desc" })
+      // Then display step.errorData.message or full error details instead of generic message
       console.error(`Unexpected stop reason: ${stopReason}`);
       process.exit(1);
     }