- Introduce functionality to resolve and manage user-uploaded files in the sandbox environment.
- Implement `prepareAttachments` method to convert attachment URLs to local file paths and handle duplicates.
- Update message processing to replace attachment content with text references, allowing Claude CLI to access files using Read and Bash tools.
- Enhance documentation to inform users about the new attachment handling capabilities.
This change improves the interaction with user-uploaded files, enabling better integration within the Claude CLI environment.
