Checks renderer-neutral banner and hero records before page projection.
A banner has optional label, text, and href fields, with at least a
label or text. A hero requires title and may carry tagline, description,
ordinary link actions, and an image naming a logical local asset plus
alt text. Text is plain UTF-8, never HTML. URLs, link lists and logical image
names use the shared presentation settings policy and finite limits.
These records supply content, not a host product layout or a framework component. A renderer decides how to present them and must preserve their text and ordinary links without browser enhancement.
Summary
Functions
Validates an optional banner or hero and preserves the admitted record.