card: document the non_literal_value flag

manifest: non_literal_value flag counts

nemotron: flag 563 non-literal email spans (non_literal_value)

remove attribution line

unified data: privy

unified data: openpii-1m

unified data: nemotron-pii

unified data: mapa-testdocs

unified data: mapa-sentences

unified data: gretel-pii-en-v1

build manifest

dataset card

initial commit