v0.151.0

@a3s-lab/office 0.151.0

Browser document PDF export paints Writer paragraph borders as vector strokes (top/left/bottom/right; single/thick/double/dashed/dotted) from data-office-paragraph-borders or CSS after clearing border strips on the raster canvas.

Art/wave/3D borders, between/bar edges, and full PDF/UA structure trees stay out of scope.