## Problem/Motivation The MDX editor currently does not support YAML code blocks. The system prompts of the Canvas AI agents contain YAML, so the MDX editor cannot render those blocks properly. We need YAML supported as a code-block language in the MDX editor. ## Steps to reproduce 1. Using `ai_agents` `^1.3`, create an AI agent. 2. In the instructions field, insert a code block. 3. Try to set the code block language to YAML. 4. YAML is not available in the language list.