#1038 document multipoint composition, new operators, and audit gaps - Composition: add the multipoint composition type. - points2sequence: document points2arc and points2multi_point (with _p/_ps/_po/_pso variants); add points2arc.md and points2multi_point.md stubs. - buffer_multi_point (bg/geos/cgal): change the input restriction to multipoint (since 20.2.0; arc/polygon deprecated). Add bp_buffer_multi_point.md. - Fill audit gaps (live operators that only had dangling links): add bg_buffer_single_polygon, bg_outer_single_polygon, bg_polygon_connectivity, bg_polygon, bp_polygon, bp_buffer_point. - Add Polygon-filtered concept page describing the _filtered (min-area) suffix and how it combines with _inflated / _deflated; cross-link the inflate/deflate pages. - dyna_point: add a variants section covering dyna_point(_with_ends) and dyna_segment(_with_ends). Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

MaartenHilferink committed Jun 14, 2026