Card editor help button has an incorrect accessibility role

[vvallalta-code]

Summary

The Card editor help button is exposed with role="tooltip". The interactive element is a button, while the tooltip is the content associated with that button. Assigning the tooltip role to the button gives assistive technology incorrect control semantics.

Location

• Package: @paperbits/core
• Template: src/card/ko/cardEditor.html
• Current pattern: <button class="btn btn-info" role="tooltip" ...>

Expected behavior

The help trigger retains native button semantics. Tooltip semantics, if needed, are applied to the tooltip content rather than the trigger.

Acceptance criteria

• Remove the incorrect role="tooltip" from the Card help button.
• Preserve keyboard activation and visible tooltip behavior.
• Confirm the trigger is announced as a button by a screen reader.
• Add or update an accessibility regression test where practical.

Tracking: Azure DevOps 26070428