Function create_from_wit 

pub fn create_from_wit(
    wit_path: &Path,
    world: &str,
    patterns: &[&str],
) -> Result<Vec<u8>>

Create an interceptor component for a WIT world.

• wit_path: path to WIT file or directory
• world: world name whose exports define the interceptor contract
• patterns: match patterns for selective interception (empty = intercept all)

Returns the validated component bytes.