docs: volumes.json — complete 121-title inventory, reclassify tta### as pdf_code

docs: VOLUMES.md — complete 121-title inventory, reclassify tta### as pdf_code

docs: README.md — complete 121-title inventory, reclassify tta### as pdf_code

data: reshard parquet with reclassified book_title_source (123,062 rows)

docs: volumes.json — full volume inventory & corrected schema

docs: VOLUMES.md — full volume inventory & corrected schema

docs: README.md — full volume inventory & corrected schema

fix: rename item_title->collection, add book_title parsed from pdf filename, update schema

data: upload 5 parquet shards (123,062 rows)

data: upload 5 parquet shards (123,062 rows)

docs: dataset card with config

initial commit