Update duckdb index files

.gitattributes

@@ -52,3 +52,4 @@ 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
+wangrui6--Zhihu-KOL/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

wangrui6--Zhihu-KOL/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6e4bd41260a14f376aeffebf7214697554f976097f16867d15dbf9e675e4d39f
+size 1958227968