fix: enhance UserMessage component to support image parts and improve rendering

- Updated UserMessage to accept a new `parts` prop for handling different message types, including images.
- Refactored image handling to extract and display images from the parts array, ensuring proper rendering of image content.
- Adjusted the layout and styling of the UserMessage component for better visual presentation.

app/components/chat/Chat.client.tsx

@@ -589,6 +589,8 @@ export const ChatImpl = memo(
       textareaRef.current?.blur();
     };
 
+    console.log(messages);
+
     /**
      * Handles the change event for the textarea and updates the input state.
      * @param event - The change event from the textarea.