Resolves the command that runs a backend's CLI.
A validated backends.<id>.executable, or undefined for automatic discovery.
backends.<id>.executable
Profile root for ~/ and the vendor extensions' copies.
~/
An absolute path, or the CLI name for automatic discovery.
CliResolutionError (CLI_NOT_FOUND) when vscode-extension is configured and the vendor's VS Code extension provides no usable copy.
CliResolutionError
CLI_NOT_FOUND
vscode-extension
Resolves the command that runs a backend's CLI.