Summary: ChatPDF added "AI Writer" to its tools.

Why It Matters: This change shows ChatPDF is adding new AI tools beyond just PDF chat.

What Changed:

• Removed "AI Scholar" from the main navigation bar.
• Added "AI Writer" to the main navigation bar.
• Moved "AI Scholar" to a new "TOOLS" section at the bottom of the page.
• Added "AI Detector" to the new "TOOLS" section.
• Added "PDF AI" to the new "TOOLS" section.