Brushes, patterns and artboards: new and renamed items have their names trimmed

brush.new, brush.duplicate, object.pattern.make,
object.pattern.saveCopy, artboard.new and artboard.setProps kept the
name they were given as it was, and brush.options and pattern.options
kept the white space around a new name. So a script could make a brush
" Nib" beside "Nib", and a blank name made a brush, a pattern or an
artboard named with the blank. Artboard Options sends its Name field
as typed, so clearing it named the artboard "". The Brush Options
dialog, the Pattern Options panel and the Artboards panel trim the
names they send.

The eight commands now trim the name, and the brush and pattern
commands compare the trimmed name with the names there are. In
brush.new, brush.duplicate, object.pattern.make,
object.pattern.saveCopy and artboard.new, a blank name gives the name
the command gives when there is none: "New Calligraphic Brush" and the
other default brush names, "<name> copy", "New Pattern N",
"<pattern> copy" and "Artboard N". brush.options and pattern.options
keep the name when the new one is blank, and artboard.setProps gives a
blank one the artboard's default name, Artboard N for the Nth
artboard. Duplicate Brush and Save a Copy name the copy of a brush or
pattern whose saved name has white space around it from the trimmed
name (" Old " gives "Old copy").

Docs: docs/mcp.md, docs/target-app-parity.md.

docs/mcp.md

@@ -1123,7 +1123,10 @@ already walks Image Trace. Short agent entry points:
   `symbol.selectInstances {name}`.
 - Brushes: `brush.list`, `brush.get {name}`, `brush.apply {name, ids?}`, `brush.new {type, name?, params?, ids?}`,
   `brush.setCurrent {name}`, `brush.options {name, params?}`, `brush.delete {name} | {names}`,
-  `brush.duplicate {name, newName?} | {names}`, `brush.freehand`, `object.expandBrush {ids?}`.
+  `brush.duplicate {name, newName?} | {names}`, `brush.freehand`, `object.expandBrush {ids?}`. `brush.new`,
+  `brush.duplicate` and `brush.options` trim the white space around the name they are given. A blank `name` gives
+  the type's default name ("New Calligraphic Brush" for a calligraphic brush), and a blank `newName` gives
+  "`<name>` copy" in `brush.duplicate` and keeps the name in `brush.options`.
 - Variables: `variable.list`, `variable.define {name, kind: text|visibility|image|graph}`, `variable.bind {variable, ids?}`,
   `variable.makeTextDynamic`, `variable.makeVisibilityDynamic`, `variable.makeImageDynamic`, `variable.makeGraphDynamic`,
   `variable.unbind`, `variable.rename`, `variable.delete`, `variable.highlight` (image values are file paths, graph
@@ -1548,6 +1551,11 @@ In pattern editing mode the tile edge (`pattern.options {showTileEdge}`) and the
 {showSwatchBounds}`: the part of the tiling the swatch repeats, dashed) are drawn in the preference
 `patternTileEdgeColor`.
 
+`object.pattern.make {name?}`, `object.pattern.saveCopy {name?}` and `pattern.options {newName?}` trim the white space
+around the name they are given. The first two number a name that a pattern or swatch has ("Dots 2"), and
+`pattern.options` refuses a name that another pattern has. A blank name gives "New Pattern N" in
+`object.pattern.make` and "`<pattern>` copy" in `object.pattern.saveCopy`, and `pattern.options` keeps the name.
+
 ```json
 {"name":"run_command","arguments":{"command":"pattern.options","params":{"showSwatchBounds":true}}}
 {"name":"run_command","arguments":{"command":"prefs.set","params":{"key":"patternTileEdgeColor","value":"#ff4f4f"}}}
@@ -3914,6 +3922,8 @@ the selected graph's Graph Type (an error without one), a Symbolism tool's the S
 Magic Wand tool's its panel. `ui.newArtboard` (Alt-click on the Artboards panel's New Artboard) opens Artboard Options
 for a new artboard, with `new: true` and the name, position and size that `artboard.new {}` would give it. OK runs
 `artboard.new` with the fields and makes the new artboard the active one, and Cancel adds no artboard.
+`artboard.new` and `artboard.setProps` trim the white space around `name`, and a blank name gives the artboard its
+default name, "Artboard N" for the Nth artboard.
 
 ```json
 {"name":"run_command","arguments":{"command":"tool.setOption","params":{"tool":"flare","values":{"rays":24,"ringsOn":false}}}}

docs/target-app-parity.md

@@ -416,6 +416,7 @@ Moved from the ROADMAP's "Shipped so far" on 2026-10-10. Update it when a featur
 
 - **Document Setup modal handoff:** Document Setup → Edit Artboards applies valid settings, closes the dialog and activates the Artboard tool. Pointer-click tests cover successful handoff, invalid settings, OK, Cancel and Undo in `dialogs/document_setup.rs`.
 - **Control bar with the Artboard tool:** while the Artboard tool is in use, the Control bar shows the active artboard's controls in place of the object controls: Preset, Portrait and Landscape, New Artboard, Delete Artboard, the Name field, Artboard Options, Rearrange All Artboards, the Transform link, Move and Scale Artwork with Artboard and, while the bar has room, the reference point with X and Y, and W and H with the Constrain Width and Height Proportions link. Each runs the command its Properties or Transform panel counterpart runs (`artboard.setProps`, `artboard.new`, `artboard.delete`, `tool.options {tool: "artboard"}`), and the reference point is the one the Transform panel uses. In an 800-point window the controls up to the Transform link fit, Move and Scale Artwork with Artboard show as their boxes alone with their names in tooltips, and the link opens the Transform panel with the artboard's position and size. Pointer and key tests in `panels/artboards.rs` cover the controls, W about the reference point, the orientation and the name. Public reference: [Using multiple artboards](https://web.archive.org/web/20210925094818/https://helpx.adobe.com/illustrator/using/using-multiple-artboards.html) (archived copy).
+- **Names of new and renamed artboards, brushes and patterns:** `artboard.new` and `artboard.setProps` trim the white space around the name they are given, as the Artboards panel's rename does, and a blank name gives the artboard its default name, Artboard N for the Nth artboard. `brush.new`, `brush.duplicate`, `brush.options`, `object.pattern.make`, `object.pattern.saveCopy` and `pattern.options` trim the name as the Brush Options dialog and the Pattern Options panel do, and compare the trimmed name with the names there are; a blank name gives the name each command gives when there is none, and Brush Options and Pattern Options keep the name. Tests in `tests_panelcmds.rs`, `tests_brushsym.rs` and `tests_pattern.rs` cover each command. Public references: [Using multiple artboards](https://web.archive.org/web/20210925094818/https://helpx.adobe.com/illustrator/using/using-multiple-artboards.html), [Brushes](https://web.archive.org/web/20251018101754/https://helpx.adobe.com/illustrator/using/brushes.html) and [Create and edit patterns](https://web.archive.org/web/20211031180358/https://helpx.adobe.com/illustrator/using/create-edit-patterns.html) (archived copies).
 - **Edit Artboards in Properties:** the active artboard's name is a field. Typing a new name and pressing Enter or clicking elsewhere renames that artboard in one undo step, as the Artboards panel's rename does (`artboard.setProps {index, name}`); pressing Escape or leaving the field empty keeps the old name. A click on the Artboard Options icon beside the field opens Artboard Options for the active artboard, as double-clicking the Artboard tool's button does (`tool.options {tool: "artboard"}`). Pointer and key tests in `panels/properties.rs` cover both. Public references: [Resize artboards](https://helpx.adobe.com/illustrator/desktop/create-manage-artboards/add-edit-artboards/resize-artboards.html) and [Create and add new artboards](https://helpx.adobe.com/illustrator/desktop/create-manage-artboards/add-edit-artboards/add-new-artboards.html).
 - **Artboard Escape routing:** Escape leaves Artboard editing for Selection; during a drag it first cancels the gesture. Headless egui key events cover idle Escape, active-drag cancellation and a subsequent Escape in `tests_distortkeys.rs`.
 - **Artboard deletion keys:** Delete/Backspace delete selected boards in one Undo step, retaining the original first board in the current order when all are selected, as in the public [Delete artboards guide](https://helpx.adobe.com/illustrator/desktop/create-manage-artboards/add-edit-artboards/delete-artboards.html). The last board and active drags stay protected; neither key clears selected artwork. Headless shortcut regressions in `tests_distortkeys.rs` cover reordered boards, artwork, saved state and Undo/Redo.