Snow: align schema space with the deployed inference graphs (max 14,419 grouped columns, ACS_2); gold re-expressed in that space, n_schema_columns == len(schema), 0 unresolved / 0 empty

One consistent grouped-node space for Spider 2.0: schemas as flat node lists, n_schema_columns == len(schema), gold re-expressed in system space (31 snow CRYPTO remaps, lite family space + SQL-disambiguated shards); strict exact-membership checker

Slim case-by-case CSVs under 1MB for HF blob preview; official sample ids (question_id/instance_id) + n_schema_columns in eval sets; unified o4-mini gold-construction description; document schemas/ join

Fix lite-256 gold for 94 dual-gold instances (use adjudicated lite-SQL-derived key) + join-key completeness patch (local003, local039, sf014); verified against prior released lite set

Add Spider 2.0-Lite 256 + gold checker + schemas; rename comparison to prior-golds-by-lexical-matches; restructure README

Add Spider/BIRD/Spider2.0-Snow(256) schema-linking eval sets + KaSLA case-by-case comparison