Update HuggingFace Space description

Add short_description field to correctly display what the Space does
instead of the default "Generate images from text descriptions"

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

README.md

@@ -5,6 +5,7 @@ colorFrom: blue
 colorTo: green
 sdk: docker
 pinned: false
+short_description: LLM code generation with real-time trace visualization
 ---
 
 # Visualisable.ai Backend Service