Bug Description:

The tool function getFileDiagnostics never completes, hanging the chat response.

Steps to Reproduce:

1. Execute @Coder What is wrong with this file? packages/ai-history/src/common/communication-recording-service.ts
2. Coder should invoke getFileDiagnostics on this path
3. Observe that the function never completes

Additional Information

• Operating System: Ubuntu 24.04
• Theia Version: Latest master (2402450)