Use post-review terminology in reader-facing docs instead of the internal word

Use the canonical Data Files / Data Splits / Data Fields headings

Add a Dataset Structure section with measured row counts, splits and key fields; add arXiv tag

Document the confidence scale and null handling; correct the fallback-row statement; note AUPRC tie sensitivity

Quiet the validator's uncheckummed-file warning for tool-created cache files

Release v1.0.0 accompanying the EMNLP 2026 camera-ready paper (arXiv:2608.14927)

initial commit