Module grid 

CSS Grid Layout

Implements a subset of CSS Grid for 2D layouts within the page-native layout engine. Supports:

• Fixed (pt), fractional (fr), and auto track sizing
• MinMax track sizes
• Explicit grid placement (column/row start/end/span)
• Auto-placement (row-major sparse)
• Row/column gap
• Page breaks at row boundaries

Structs

GridItemPlacement

Resolved grid item placement in the grid.

Functions

column_x_offset

Compute the x-offset for a column, accounting for gaps.

compute_num_rows

Compute the number of rows needed based on item placements.

place_items

Place items in the grid using explicit placement + auto-placement.

resolve_tracks

Resolve track sizes to concrete widths/heights in points.

span_width

Compute the width of a multi-column span.