Tighten prompt_template_source.notes: explicit 5-tier classification per 2026-06-01 priority rules

Refine prompt_template_source: cite verifiable official sources per 2026-05-30 deep audit

Populate prompt_template_source for all subsets per 2026-05-30 audit

Drop stray legacy metadata/ parquet (superseded by root metadata.json)

fix: modalities taxonomy, task_type, url consolidation, structural corrections

Upload metadata.json with huggingface_hub

Upload dataset

Add DynaMath dataset (default config)

Add DynaMath dataset (metadata config)

Add DynaMath dataset (default config)

initial commit