This is a partially vibe-coded experiment to see if there are any blockers to having this work normally.
`LTEx LTXVAddGuide (Cond Only)` is a drop-in alternative to LTXVAddGuide for LTXV and LTX-2 (LTXAV). It carries the guide on the conditioning instead of appending it to the latent, so the working latent is never touched and no LTXVCropGuides node is needed.