Function resolve_styled_items_into 

pub fn resolve_styled_items_into(
    styled_items: &[Span],
    decoder: &mut EntityDecoder<'_>,
    defer_attached_styles: bool,
    orphan_styled_items: &mut FxHashMap<u32, [f32; 4]>,
    geometry_style_index: &mut FxHashMap<u32, GeometryStyleInfo>,
    deferred_attached_styled_spans: &mut Vec<(usize, usize)>,
)

The styled-item classification/resolution loop of [resolve_prepass], exposed so the browser’s SHARDED pre-pass can fan slices of the (file- ordered) styled-item span list across workers: each worker resolves its contiguous slice with this exact loop, and the host merges shard results in shard order with first-wins per geometry id — reproducing the serial resolver’s file-order first-wins precedence (collect_geometry_style_info skips ids already present).