Use the established typed graph fixture constructor while retaining right-hand comparison provenance assertions. Restore the unchanged duplicate-code gate on combined main.
Closes#1446. Refs #1434, #1443, #1065.
Resolve each compared graph node through a per-side index while preserving right-hand evidence selection and complete comparison results.
Refs #1065.
Co-authored-by: keemsisi <7439375+keemsisi@users.noreply.github.com>