[Bug] Agent avoids Edit tools causing duplicate calls and rapid context exhaustion

Bug Description
Since yesterday's update, I've observed that the agent rarely uses the Edit tool and frequently makes redundant or duplicate tool calls. As a result, context windows and token budgets appear to be consumed much faster than before.

Workflows that could previously be completed within a single session now often require multiple sessions and still fail to complete correctly.

I suspect there may be a regression related to concurrent tool execution or tool-selection behavior.

Environment Info

• Platform: darwin
• Terminal: vscode
• Version: 2.1.158
• Feedback ID: aad58949-e919-4f0c-82fe-0f973cdb9a27