M4.26: SVG Options in the engine, a dialog and MCP

document.export, serialize and save, and the Save As / Save a Copy UI
commands, take the SVG options flat or as svg: {…}: styling
(presentation, style, entities, css), outlineText, images (embed or
link; linked files are written next to the SVG), objectIds (layerNames,
minimal, unique), decimals 1–7, minify, responsive, useArtboards and
range "all" (one SVG per artboard), preserveEditing (the SVG reopens as
the full document) and metadata. Unknown keys are rejected and
document.formats lists every option with its default. Results carry the
SVG writer's warnings.

Save writes SVG to an .svg path and Save again reuses its options.
Export As SVG and Save As / Save a Copy to .svg open SVG Options (first
use: Internal CSS and Responsive, then the last-used choices) with a
read-only code view. Save a Copy no longer retargets the document.

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

docs/control-protocol.md

@@ -21,6 +21,7 @@
 | `app.open` / `app.save` / `app.export` / `app.quit` | `{path}` / `{path?}` / `{path?, format?, artboard?, range?, scale?, …}` | `app.open` reads every format `document.open` reads (see `document.formats`). `app.export` encodes through the engine's `document.export` (same options; the document keeps its path) and writes `path` through the host; without `path` it returns `{dataBase64, format, bytes}`, as headless mode does. `app.quit`, `file.close` and `file.closeAll` first open a `saveChanges` dialog for each modified document (they return `{"pending": "saveChanges"}`): `ui.dialog.confirm` saves, `ui.dialog.set {field: "discard", value: true}` then confirm discards, `ui.dialog.cancel` cancels the whole close or quit |
 | `ui.dialog.*` on `gradientStop` | `{field: "color" \| "opacity" \| "location", value}` | double-clicking a stop on the Gradient tool's annotator opens its popover (fields `index`, `x`, `y`, `tab`); set `color` (hex), `opacity` or `location` (percentages) and `ui.dialog.confirm` to apply them to the selected stop. `gradient.selectStop {index}` picks the stop the annotator, the panels and Delete/←/→ (`ui.key`) act on |
 | `engine.execute` `ui.savePdfDialog` | `{path?, preset?, range?, …document.exportPdf options}` | opens the Save PDF dialog (`file.export.pdf` with no params opens it too). Its fields are the `document.exportPdf` options: set `compatibility` with `ui.dialog.set {field: "compatibility", value: "1.5"}`, a whole section with `{field: "compression", value: {…}}`, the artboards with `__allArtboards: false` and `range`, the visible section with `__section` (General, Compression, Marks and Bleeds, Output, Advanced, Security, Summary). `ui.dialog.confirm` writes `path` (else asks for one), returns `{path, bytes, warnings}` and opens the file when `viewAfterSaving` is set |
+| SVG Options (`engine.execute` of `file.export.svg`, `file.saveAs`, `file.saveCopy`) | `{}` / `{path?, svg?: {…}}` | `file.export.svg` without params, and Save As or Save a Copy to an `.svg` path without SVG options, open the `svgOptions` dialog (`ui.dialog.set` its fields: `styling`, `outlineText`, `images`, `objectIds`, `decimals`, `minify`, `responsive`, `metadata`, `preserveEditing`, `useArtboards`, `allArtboards`, `range`, `showCode`; `ui.dialog.confirm` exports or saves and remembers the choices). With `svg: {…}` (the `document.formats` SVG options) they run directly. `app.save {path?, svg?}` takes the same options; a document saved as SVG saves as SVG again with the same options |
 
 Swatch editors: `engine.execute` with `ui.swatchOptions {name}` opens the `swatchOptions` dialog for a colour swatch
 (fields `name`, `spot`, `global`, `mode`: `gray`/`rgb`/`hsb`/`lab`/`cmyk`/`web`, `color`: `"#rrggbb"` or a colour object,