Update duckdb index files

.gitattributes

@@ -53,3 +53,4 @@ 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
+nRuaif--lightnovel-2048/test/index.duckdb filter=lfs diff=lfs merge=lfs -text

nRuaif--lightnovel-2048/test/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:3ba8337b6a70654c0f470bd1eaba8c6ef32e38cb289992a4beee01f7e3119b09
+size 1585152