Summary: Cursor updates AI agent demo capabilities

Why It Matters: The update shows the AI agent handling more complex machine learning tasks. It highlights specific technical features like mixed precision training and experiment tracking to appeal to advanced developers.

What Changed:

• Updated the interactive demo text to show the agent completing a PyTorch MNIST experiment framework.
• Added specific technical details to the demo output, including AMP (Automated Mixed Precision), cosine scheduling, and gradient clipping.
• Expanded the "Complete codebase understanding" section to show the agent searching for specific UI implementation details.
• Added a language selector in the footer with support for English, Chinese, and Japanese.