Path: Remove Anchor Points is Object › Path's one item and shares the Delete Anchor Point refit (review of #241)

- Parity: Object › Path › Remove Anchor Points now runs the new command (`path.removeAnchors`,
  the menu's feature name) instead of `path.deleteAnchors`, which deleted the anchors with their
  segments and opened closed paths; that stays the Delete key's command ("Delete Anchor Points",
  off the menu). No second "Smart" item.
- Geometry: the refit moves to `vectorcraft_pathops::remove_anchor` on the existing least-squares
  fitter (fixed end tangents, a golden-section search for where the curve passes the removed
  point) instead of a ~1,000-candidate grid search in geom (about 4 ms per anchor, now well under
  0.1 ms). Two straight sides stay one straight side (a rectangle loses a corner and becomes a
  triangle), as Illustrator does; non-finite input leaves the handles alone.
- The Delete Anchor Point tool (`path.removeAnchor`) uses the same function, replacing its
  heuristic handle stretch; the explicit id/anchor and `fit` params of the new command are dropped
  as duplicates of it. The command is enabled by direct-selected anchors (`has_anchors`), not a
  UI override.
- The Control bar shows an icon button (the Delete Anchor Point icon, tooltip "Remove Anchor
  Points") instead of a 204 pt text button; the labels reuse the translated "Remove Anchor
  Points"; zh-hant gains "Delete Anchor Points". The Pen test that pinned Alt-click as plain Pen
  (Illustrator's Alt over an anchor is Convert Anchor Point) is dropped.
- Tests for the refit, closed paths, straight sides and bad input; docs/mcp.md and ROADMAP.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

docs/mcp.md

@@ -936,6 +936,20 @@ paths and compound paths, and `path.reverse {reversed?}` makes subpaths run coun
 {"name":"run_command","arguments":{"command":"path.setFillRule","params":{"rule":"evenOdd"}}}
 ```
 
+## Removing anchor points
+
+`path.removeAnchors {}` (Object › Path › Remove Anchor Points) removes the direct-selected anchors (`select.anchors
+{id, anchors: [[subpath, anchor]…], mode?}`) without opening their paths, in one undo step, and answers
+`{removedObjects}` (paths left with no segment go). Each removed point's neighbours keep their handle directions and
+their facing handles are refitted so one cubic follows the two old segments; two straight sides become one.
+`path.removeAnchor {id, subpath?, anchor}` (the Delete Anchor Point tool) removes one anchor the same way, and
+`path.deleteAnchors {}` (the Delete key) deletes the selected anchors with their segments, opening closed paths there.
+
+```json
+{"name":"run_command","arguments":{"command":"select.anchors","params":{"id":12,"anchors":[[0,1],[0,3]]}}}
+{"name":"run_command","arguments":{"command":"path.removeAnchors","params":{}}}
+```
+
 ## Registration and trim marks
 
 Every document has the built-in `[Registration]` swatch (listed after None by `swatch.list`): a colour that prints on