Summary: ChatDOC adds image support to its AI analysis

Why It Matters: The tool is moving beyond text and formulas to handle visual data. This means users can now likely analyze pictures, charts, or screenshots alongside their documents.

What Changed:

• Replaced "Formula" with "Image" in the main feature highlights.
• Added "EPUB, MD, TXT" to the visible file upload list on the homepage.
• Updated internal workflow versioning or step indicators from "1" to "2".