Auto-Generate & Publish SEO Articles to WordPress with GPT-4 + Postgres Tracking

🚀 What this flow does • 🔎 Selects the least-used WordPress category (tracked in PostgreSQL) • 🤖 Uses GPT (4-mini or better) to generate a fully formatted SEO article with headings, TOC, lists, CTA, and Yoast blocks • 🖼️ Creates a placeholder cover image and uploads it to WordPress Media • 📬 Publishes the final post via /wp-json/wp/v2/posts with correct category + featured image • 🧠 Logs the used category for future rotation (zero duplicates!) ⚙️ Setup in 3 mins 🏷️ Add your WordPress domain with a simple Set node: domain=https://yourdomain.com 🔐 Create these 3 credentials in n8n: YOURWORDPRESSCREDENTIAL — for /media, /posts YOURPOSTGRESCREDENTIAL — for category tracking YOUROPENAICRED

Help me set up the n8n workflow "Auto-Generate & Publish SEO Articles to WordPress with GPT-4 + Postgres Tracking" (https://n8n.io/workflows/3887). It uses: HTTP Request, Postgres, Code, AI Agent, OpenAI Chat Model. Import the template JSON into my n8n instance, list every credential I need to create, and walk me through testing it.