"Copy Code" Button Doesn't Work in Chrome App (macOS)

In the Chrome app version of T3 Chat on macOS, the floating "Copy Code" button becomes non-functional when the code snippet is scrolled. Clicking it does not copy the code to the clipboard.

Steps to Reproduce (STR):

1. On macOS, install T3 Chat as a Chrome app (via "Install T3 Chat" from Chrome menu).

2. Use a prompt that generates a long code snippet (enough to require vertical scrolling).

3. Scroll to the bottom of the code snippet.

4. A floating "Copy Code" button appears in the top-right corner of the code block.

5. Click the floating button.

Expected Behavior:

The code should be copied to the clipboard when clicking the floating "Copy Code" button.

Actual Behavior:

Clicking the floating "Copy Code" button has no effect—code is not copied.

Additional Observations:

• Hovering over the header copy button shows a hand cursor (expected).

• Hovering over the floating copy button only shows a default pointer cursor, suggesting it might not be registered as a clickable element.