Summary: Cursor adds CLI improvements and Mermaid diagrams

Why It Matters: The product is moving fast with weekly updates. These new features help developers visualize code and work faster from the command line.

What Changed:

• Added a new changelog entry for February 18, 2026, featuring CLI improvements and Mermaid ASCII diagrams.
• Updated the interactive demo text to show more advanced AI responses about font preloading and CSS inlining.
• Changed the "Ready for Review" count from 4 to 6 in the hero section demo.
• Updated the model picker demo to show "Composer 1" as the suggested default instead of "GPT-5.2".
• Added new status messages in the demo interface regarding usage patterns and implementation steps.