Header and navigation¶

GridViewHeader¶

Page or entity identity in the layout (distinct from GridViewMeta.title for document chrome).

from grid_view_spec.types.header import GridViewFact, GridViewEntity, GridViewHeader

GridViewHeader(
    id="page_header",
    presentation="entity",  # plain | entity | split | compact | hero
    subtitle="February 2026",
    entity=GridViewEntity(
        id="dept-12",
        title="Cardiology",
        facts=(
            GridViewFact(label="Code", value="CARD"),
            GridViewFact(label="Head", value="Dr. Smith"),
        ),
    ),
    nav="main_nav",
    actions="header_actions",
)

Field	Role
`entity`	Simple label/value pairs for entity pages
`content`	Block id of `GridViewTemplate` for complex aside HTML
`nav`	Block id of `GridViewNav`
`actions`	Block id of `GridViewActions`

GridViewNav¶

Breadcrumbs, back links, and section navigation. Referenced from header or placed in layout.