Track the oversized OpenITI train.csv with LFS

hf upload stored it as LFS because it exceeds the 10 MB threshold, but
.gitattributes did not declare it, so git saw a pointer/content mismatch.
Other CSVs stay plain.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

.gitattributes

@@ -42,3 +42,5 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 *.jpg filter=lfs diff=lfs merge=lfs -text
 *.jpeg filter=lfs diff=lfs merge=lfs -text
 *.webp filter=lfs diff=lfs merge=lfs -text
+# Stored as LFS on the Hub because it exceeds the 10 MB threshold; other CSVs are plain
+OpenITI-Makhzan_Metadata_2026-1-2/train.csv filter=lfs diff=lfs merge=lfs -text