When the extension detects that uv is installed and is being used for venv actions (such as creating a venv or installing packages), update the venv label in the VS Code sidebar to display venv [uv]. This will help users easily see that uv is being used for their environment management. The detection should be based on whether uv is found and used, and the label update should be visible in the sidebar UI. Verbose logs can be used to confirm the actual command execution, but the main user-facing change is the sidebar label update.