Function base_diff_inputs_with_candidate 

pub fn base_diff_inputs_with_candidate(
    root: &Path,
    base: &ResolvedBase,
    candidate_files: &[FileEntry],
    candidate_manifests: &[(RelativePath, Vec<u8>)],
) -> Result<BaseDiffInputs, BaseInputsError>

Loads diff inputs, using candidate declarations only when the managed root has no base object.

This narrow bootstrap path lets a complete managed workspace be introduced below an existing repository. Once the base contains any object below root, base declarations remain the sole ownership authority.

Errors

Returns coded listing/blob/discovery failures or GitToolError when Git cannot start.