Add Model Descriptions

Add descriptions for new models available in the HuggingFace router to chat-ui's prod.yaml and dev.yaml. Also flag models that support the OpenAI-compatible reasoning_effort parameter so chat-ui shows the thinking-effort selector for them, and enable artifacts for models with 32B or more total parameters.

Workflow

1. Fetch models from router

   WebFetch https://router.huggingface.co/v1/models
   

   Extract all model IDs from the response.

2. Read current configuration

   • Read chart/env/prod.yaml
   • Extract model IDs from the MODELS JSON array in envVars