Function run_create 

pub async fn run_create(
    name: Option<&str>,
    output: Option<&str>,
    pattern: Option<&str>,
) -> Result<(), ZigError>

Launch an interactive zag session for workflow creation.

The agent is given full context about zag and the .zwf format, and guides the user through designing their workflow. Driven through AgentBuilder::run, so no external zag binary is required.