Document binary splat validation

README.md

@@ -93,6 +93,8 @@ gaussians.ply` to verify 3DGS parameters and provenance fields.
 Convert a validated Gaussian PLY for common binary splat viewers with
 `python gaussian_ply_to_splat.py gaussians.ply scene.splat`; the converter also
 writes a JSON sidecar documenting the format and source evidence fields.
+Validate the resulting binary with `python validate_splat.py scene.splat`
+before handing it to a renderer.
 For COLMAP text outputs, use `python import_colmap.py cameras.txt images.txt
 image_root capture.json --held-out IMAGE_ID ...` to create the manifest first.
 See [REAL_CAPTURE_GUIDE.md](REAL_CAPTURE_GUIDE.md) for the complete COLMAP