Control which credentials can be used in Workbench

Admins and permissioned users can now control whether a credential is available in Workbench.

When you disable "Workbench access" for a credential:

• Templates and MCP tools using it will disconnect from Workbench

• Templates using it in the storyboard remain connected

This gives your team more control over which credentials are appropriate for AI-assisted work in Workbench, without affecting your stories or other workflows.