Function check_cli_version 

pub async fn check_cli_version() -> Result<CliVersionStatus, ClaudeError>

Checks the installed claude CLI version against TESTED_CLI_VERSION.

Runs claude --version and returns a CliVersionStatus indicating whether the installed version is exact, newer, older, or unparseable.

Errors

• ClaudeError::CliNotFound if claude is not in PATH.
• ClaudeError::NonZeroExit if the command fails.
• ClaudeError::Io for other I/O errors.