Summary: Cursor updates AI agent demo with GPT-5.2

Why It Matters: The update showcases more advanced AI capabilities and longer task completion sequences. This signals a shift toward more autonomous coding agents that can handle complex multi-file experiments.

What Changed:

• Updated the interactive demo to feature "GPT-5.2" instead of "GPT-5."
• Expanded the demo code to include a command-line runner script (run_experiment.py).
• Added more detailed descriptions of agent capabilities, specifically mentioning mixed precision training and experiment frameworks.
• Updated the codebase indexing section to show a new search query example about model picker UI implementation.