A chat widget where the CMS holds a loader and nothing else — plus the four failure modes that cost me the most time: buffered SSE, base64 truncation that passes a syntax check, render-time escaping, and a balanced-but-wrong tag tree. Canonical_url https://dhseadev. online/2026/08/06/ai-answers-...
Source: [Dev.to](https://dev.to/dhseadev/shipping-an-llm-chat-widget-with-481-bytes-of-cms-footprint-wordpress-3752)