Function detect_circular_dependencies 

pub fn detect_circular_dependencies(
    options: &DeadCodeOptions,
) -> Result<Value, ProgrammaticError>

Run circular-dependency analysis and return the dead-code JSON envelope.

This is a convenience wrapper over the typed dead-code runtime. It keeps the envelope shape stable while narrowing results to circular_dependencies.

Errors

Returns the same structured errors as detect_dead_code.