Function bump_rows 

pub fn bump_rows(
    bundle: &Path,
    project: &str,
    generation: Option<&str>,
) -> Result<(String, Vec<BumpRow>)>

The plan a bundle implies for the tracker: one row per module the lock builds, blockers along the SBOM’s dependency edges. Nothing is written.

Errors

The bundle lacks locks/default.lock.json or package.sbom.cdx.json, or either is not what eb-stack writes.