Add master train/index.json — aggregates all 19 chunks with chunk-prefixed basenames so consumers can point at split=train without enumerating chunks.

Update train/chunk_018/index.json

Add files using upload-large-folder tool

Add files using upload-large-folder tool

Add files using upload-large-folder tool

Add files using upload-large-folder tool

Add files using upload-large-folder tool

Recover shard.00543.mds (lost during original chunk_1 upload)

Fix chunk_001/index.json: drop missing shard.00543.mds (lost in original upload)

Restructure train/: nest shards into chunk subdirs (batch 98/98)

Restructure train/: nest shards into chunk subdirs (batch 97/98)

Restructure train/: nest shards into chunk subdirs (batch 96/98)

Restructure train/: nest shards into chunk subdirs (batch 95/98)

Restructure train/: nest shards into chunk subdirs (batch 94/98)

Restructure train/: nest shards into chunk subdirs (batch 93/98)

Restructure train/: nest shards into chunk subdirs (batch 92/98)

Restructure train/: nest shards into chunk subdirs (batch 91/98)

Restructure train/: nest shards into chunk subdirs (batch 90/98)

Restructure train/: nest shards into chunk subdirs (batch 89/98)

Restructure train/: nest shards into chunk subdirs (batch 88/98)

Restructure train/: nest shards into chunk subdirs (batch 87/98)

Restructure train/: nest shards into chunk subdirs (batch 86/98)

Restructure train/: nest shards into chunk subdirs (batch 85/98)

Restructure train/: nest shards into chunk subdirs (batch 84/98)

Restructure train/: nest shards into chunk subdirs (batch 83/98)

Restructure train/: nest shards into chunk subdirs (batch 82/98)

Restructure train/: nest shards into chunk subdirs (batch 81/98)

Restructure train/: nest shards into chunk subdirs (batch 80/98)

Restructure train/: nest shards into chunk subdirs (batch 79/98)

Restructure train/: nest shards into chunk subdirs (batch 78/98)

Restructure train/: nest shards into chunk subdirs (batch 77/98)

Restructure train/: nest shards into chunk subdirs (batch 76/98)

Restructure train/: nest shards into chunk subdirs (batch 75/98)

Restructure train/: nest shards into chunk subdirs (batch 74/98)

Restructure train/: nest shards into chunk subdirs (batch 73/98)

Restructure train/: nest shards into chunk subdirs (batch 72/98)

Restructure train/: nest shards into chunk subdirs (batch 71/98)

Restructure train/: nest shards into chunk subdirs (batch 70/98)

Restructure train/: nest shards into chunk subdirs (batch 69/98)

Restructure train/: nest shards into chunk subdirs (batch 68/98)

Restructure train/: nest shards into chunk subdirs (batch 67/98)

Restructure train/: nest shards into chunk subdirs (batch 66/98)

Restructure train/: nest shards into chunk subdirs (batch 65/98)

Restructure train/: nest shards into chunk subdirs (batch 64/98)

Restructure train/: nest shards into chunk subdirs (batch 63/98)

Restructure train/: nest shards into chunk subdirs (batch 62/98)

Restructure train/: nest shards into chunk subdirs (batch 61/98)

Restructure train/: nest shards into chunk subdirs (batch 60/98)

Restructure train/: nest shards into chunk subdirs (batch 59/98)

Restructure train/: nest shards into chunk subdirs (batch 58/98)