M3.45: graphic style links: redefine, break link, options, unused, sort, Select > Same

The Appearance panel names the style a linked object uses and its menu offers Redefine
Graphic Style "name", which updates every object still linked (edited objects keep their
look and are unlinked). The Graphic Styles panel breaks links (button and menu), selects
all unused styles, sorts by name, deletes several styles, and opens Graphic Style Options
(rename; links follow) on double-click; New Graphic Style from the menu or with Alt asks
for a name. Select > Same > Graphic Style and Appearance Attribute work, and Document Info
lists the style names.

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

docs/control-protocol.md

@@ -36,3 +36,7 @@ fill or stroke (fields as in `swatchOptions` plus `group`; a gradient or pattern
 `swatches`); `ui.dialog.confirm` runs `swatch.new` / `swatch.newGroup`.
 
 The Color Picker is a dialog too: `engine.execute {command: "ui.colorPicker", params: {stroke?, color?}}` opens it for the fill (or stroke) proxy; `ui.dialog.set {field: "hex", value: "00FF00"}` (or `color`, `channel`, `webOnly`, `swatches`) then `ui.dialog.confirm` applies the colour through `paint.setFill` / `paint.setStroke`.
+
+Graphic styles: `ui.graphicStyleOptions {name}` opens the `graphicStyleOptions` dialog (field `name`) for a style and
+`ui.dialog.confirm` renames it with `graphicStyle.rename` (a name another style has returns an error and keeps the
+dialog open); without `name` it names a new style made from the selection (`graphicStyle.new`).