Safe DOCX posture
w:pPr child-element ordering
w:pPr (CT_PPr) declares its children as an ordered sequence; readers
that validate against the schema reject out-of-order properties. The
generation property-ordering discipline
(packages/docx-core/src/generation/ordering.ts) encodes the emitted
subset of that sequence as PPR_ORDER and routes every paragraph
property through appendInOrder, which throws on any property name
missing from the table so new properties force a conscious ordering
decision.