fix(blog): 3s delay between queued LLM pipelines to prevent nginx 429 bursts

packages/api/src/routes/blog.ts

@@ -912,8 +912,8 @@ async function processLlmQueue(): Promise<void> {
     }
   }
   llmRunning = false;
-  // Process next item
-  if (llmQueue.length > 0) processLlmQueue();
+  // Process next item — small delay between pipelines to avoid nginx rate-limit bursts
+  if (llmQueue.length > 0) setTimeout(() => processLlmQueue(), 3000);
 }
 
 /** Run 10-Step Flexoptix Style LLM Pipeline and update draft in-place */