Fix #602: Scale Artwork with Artboard scales the art with a resized artboard

`artboard.setProps {scaleArt: true}` maps the art fully inside a resized
artboard (as Move Artwork with Artboard gathers it) and its artboard guides
from the old rectangle onto the new one, each side by its own ratio, in one
undo step, and returns the ids scaled. Strokes, effects and corners follow
Scale Strokes & Effects and Scale Corners (`strokes`, `corners`), pattern tiles
Transform Pattern Tiles (`patterns`); locked and hidden art follows
`lockedAndHidden` (default: prefs moveLockedWithArtboard). The resolved choices
are journaled, so a replay scales the same objects the same way. A move that
keeps the size scales nothing.

The Artboard tool's `scaleArt` option (saved with `moveArt`) makes handle
drags proportional, as the public help describes, keeps them proportional at
the 1 pt minimum, and leaves the scaled art out of the Smart Guide targets.
Move and Scale Artwork with Artboard are check boxes in the Control bar and
Properties' Edit Artboards; the artboard size fields there and in the
Transform panel pass the option. Translated in the eight catalogs that have
Move Artwork with Artboard. docs/mcp.md and the ROADMAP updated.

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

docs/mcp.md

@@ -629,7 +629,7 @@ repeated names, and ids the document doesn't have are dropped.
 Ruler guides are numbered in the order they were made. `guide.add {vertical, pos, artboard?}` makes one (the x of a
 vertical guide, the y of a horizontal one, in points) → `{index}`. With `artboard` (an artboard's index) it is an
 artboard guide: it runs across that artboard only, moves with it (`artboard.move`, a pure move in
-`artboard.setProps`, `artboard.rearrange`), is copied with it (`artboard.duplicate`, `artboard.move {copy}`) and is
+`artboard.setProps`, `artboard.rearrange`), scales with it (`artboard.setProps {scaleArt}`), is copied with it (`artboard.duplicate`, `artboard.move {copy}`) and is
 deleted with it (`artboard.delete`); without, a canvas guide runs across the whole canvas. `guide.list` →
 `[{index, vertical, pos, selected, artboard?}…]` (`artboard` only for artboard guides).
 `guide.select {indexes: [index…], toggle?}` selects guides on their own (the art is deselected; `toggle` adds or
@@ -1268,7 +1268,8 @@ The Selection & Anchor Display and General preferences apply to `pointer_gesture
   point a selection is dragged by, a drawn point and a transform tool's reference point land on an anchor or a ruler
   guide that near.
 - `moveLockedWithArtboard`: `artboard.move {moveArt: true}`, the Artboard tool and `artboard.rearrange` move locked and
-  hidden art with the artboard too; off (the default) it stays where it is.
+  hidden art with the artboard too, and `artboard.setProps {scaleArt: true}` scales it too; off (the default) it stays
+  where it is.
 - `penRubberBand`, `curvatureRubberBand` (on by default): off, the Pen and Curvature tools draw no preview segment to
   the pointer.
 - `showHandlesMultipleAnchors` (on by default): off, Direct Selection (and the Anchor Point tool, and the Pen with Alt)
@@ -1551,6 +1552,17 @@ pastes only the art), in this document or another; the result's `artboard` is th
 does the same in one step → `{index, ids}`, and `artboard.move {copy: true, moveArt: true}` is the Artboard tool's
 Alt-drag.
 
+Scale Artwork with Artboard (#602): `artboard.setProps {index, x?, y?, width?, height?, scaleArt: true}` resizes an
+artboard and scales the art fully inside it, and its artboard guides, from the old rectangle onto the new one, each side
+by its own ratio (keep the proportions for an even scale), in one undo step → `{scaled: [id…]}`. Locked and hidden art
+scales only with `lockedAndHidden: true` (default: prefs `moveLockedWithArtboard`); strokes, effects and corners scale
+as with `object.scale` (`strokes?`, `corners?`, default: Scale Strokes & Effects and Scale Corners), pattern tiles with
+`patterns?` (default: Transform Pattern Tiles). A move that keeps the size scales nothing (art moves with
+`artboard.move {moveArt}`). The Artboard tool's `scaleArt` option (`tool.setOption {tool: "artboard", key: "scaleArt",
+value: true}`; the Control bar's and Properties' Scale Artwork with Artboard check box, beside Move Artwork with
+Artboard) makes its handle drags proportional and passes `scaleArt`, as do Properties' and the Transform panel's
+artboard size fields while the tool is in use.
+
 ```json
 {"name":"run_command","arguments":{"command":"artboard.copy","params":{"index":0}}}
 {"name":"run_command","arguments":{"command":"edit.paste","params":{}}}