Summary: HuggingChat launches chat app

Why It Matters: This shows HuggingChat is now a live product. It moved from a "coming soon" page to a working application.

What Changed:

• The "We are cooking something new, please stay tuned..." message was removed.
• A full chat application interface for HuggingChat was added.
• New navigation links for "New Chat," "Models," and "Settings" were added.
• Text explaining HuggingChat as a "chat app powered by open source AI models" was added.
• Information about an "Omni" feature that picks the best AI model was added.
• Examples of chat prompts like "Act as Yoda" and "Generate prompts" were added.