Function check_paths 

pub fn check_paths<I, P>(inputs: I) -> Result<(), Error>
where
    I: IntoIterator<Item = P>,
    P: AsRef<Path>,

Check one or more .syn input paths as a mission-visible set.

Each root and its imports are validated normally. When more than one root is supplied, Synapse also validates mission-wide packet ID uniqueness across the deduplicated import closure.