Recolor Artwork: color sliders edit the selected row's new color in a chosen mode

The Assign tab gets a Color Mode menu (HSB, RGB, CMYK, Lab, and Tint when
the row's new color is a spot color of the Limit to Library library) and
its sliders under the rows. They edit the first selected row's new color
and are disabled with no row selected. Once they have edited a color in a
mode, the preview and OK send recolor.apply with model "new", so the art
takes the color in that mode.

recolor.apply rows take an optional tint (percent, default 100): art linked
to the row's global or spot library swatch takes that share of its tint.
recolor.randomize keeps a row's tint.

docs/control-protocol.md

@@ -253,9 +253,12 @@ and spot colours exist; the dialog then stays open.
 
 Recolor Artwork: `ui.recolorDialog {colors?, library?, group?}` opens the `recolor` dialog on the selected art
 (`colors`: a count for an n-colour job, or colours to assign as the new colours; `library`: Limit to Library, a library
-or `"document"`, `""` for the first library; `group`: a colour group, Edit or Apply Color Group). Fields: `rows` (`[{from: [keys], to: key, exclude?}]`
+or `"document"`, `""` for the first library; `group`: a colour group, Edit or Apply Color Group). Fields: `rows` (`[{from: [keys], to: key, exclude?, tint?}]`
 as `recolor.reduce` returns them), `colors` (null for Auto), `method`, `preserveWhite`, `preserveBlack`,
-`preserveGrays`, `limitTo`, `groupName`, `tab` (`assign` or `edit`), `rule` (harmony id), `linked`, `preview`. Setting
+`preserveGrays`, `limitTo`, `groupName`, `tab` (`assign` or `edit`), `rule` (harmony id), `linked`, `preview`,
+`sliderMode` (the mode of the color sliders under the rows: `hsb`, `rgb`, `cmyk`, `lab`, or `tint` for a row whose new
+color is a spot color of the library; unset, they show the new color's own model). The sliders edit the first selected
+row's new color; once they have, the preview and confirm send `recolor.apply` with `model: "new"`. Setting
 `colors`, a preserve flag or `limitTo` reduces the rows again (also on `ui.dialog.confirm`). The dialog previews
 `recolor.apply` on the canvas; confirm keeps it as one undo step (with a group, the group is rewritten in the same
 step; with no art selected only the group changes). In the Swatches panel, double-clicking a colour group's folder,

docs/mcp.md

@@ -1919,16 +1919,17 @@ tints of a global swatch share its row; White and Black are preserved by default
 `[{from: [keys], to: key}]` to edit and pass to `recolor.apply {map, method?, model?, limitTo?, group?, groupColors?, rename?}`.
 For scripts and MCP, `model` selects the replacement color model: `keep` (default) retains each
 original color's model, `new` takes the replacement's model, and `document` converts replacements
-and edited color groups to the document's model. Invalid values fail before editing. This parameter
-is not a control in the Recolor Artwork dialog. A returned `note` reports a model conversion in
-`keep` mode.
+and edited color groups to the document's model. Invalid values fail before editing. The Recolor
+Artwork dialog sends `new` once its color sliders have edited a row's new color in a color mode. A
+returned `note` reports a model conversion in `keep` mode.
 
 `method` says how a row's colours take its new colour: `exact`, `preserveTints` (tints of the row's darkest colour
 stay tints), `scaleTints` (every colour becomes a tint as light, relative to the darkest), `tintsShades` (lighter and
 darker than the row's average become tints and shades) or `hueShift` (the most saturated colour takes the new colour,
 the others turn by the same hue). `limitTo` snaps new colours to a swatch library's nearest colour;
 `recolor.randomize {map, order?, saturationBrightness?, seed?}` shuffles or varies new colours; a row with
-`exclude: true` keeps its colours. `swatch.editGroup {group, colors, rename?}` rewrites a colour group in one undo
+`exclude: true` keeps its colours. With `limitTo`, a row's `tint` (a percentage, default 100) gives the art
+linked to the global or spot swatch its new color is that share of its tint; `tint` must be a number. `swatch.editGroup {group, colors, rename?}` rewrites a colour group in one undo
 step (art linked to its global swatches follows), and `recolor.apply` with `group` recolours the art and rewrites the
 group together. Art linked to one of the group's global swatches stays linked when the swatch is rewritten with its
 row's new color (the default without `groupColors` when the rows follow the group's order), so a later `swatch.edit` still

docs/target-app-parity.md

@@ -123,7 +123,7 @@ dominate; 3D, graphs and automation are specialist). They sum to 105. Feature de
 | Selection, transform & align tools | 6 | 85% | Direct Selection segment click/Delete corrected (#1278); open-path anchor Delete keeps gaps; Select › Start Global Edit finds the paths, compound paths and symbol instances of the selected object's shape (Appearance, Size and artboard options) and gives an edit of one to all of them in proportion, as one undo step (#3521), and on a group the groups like it, an edit inside one reaching the same object in the others (#4939); the Align panel menu's Align to Glyph Bounds › Point Text and Area Text measure type by its glyphs' ink for Align and Distribute (#4231); remaining: Free Transform/Scale/Reflect along a rotated box, Global Edit of rotated copies and excluding a match with Shift-click, transform nuances (no-op anchor Align history regression-tested, #1180 follow-up) | 4–6 | estimated; Global Edit regression-tested (`crates/engine/src/tests/globaledit.rs`; Quick Action, menu label and Escape in `panels::properties::tests::start_global_edit_quick_action_and_escape`) |
 | Drawing tools (Pen, Curvature, Pencil, shapes, Shaper) | 7 | 85% | Shaper construction widget, Pencil/Pen nuances, Blob Brush options, Touch Type, Dimension tool; see [ui-parity.md](ui-parity.md) | 8–13 | estimated; Curvature point display regression-tested (#1236, in part); Polygon/Star exact-size count persistence regression-covered; Live Corners' Relative rounding done (#3091), score unchanged |
 | Path operations, Pathfinder, Shape Builder, Live Paint | 5 | 80% | Shape Builder on the reporter's file (#937: art past 4,096 segments is cut by lines again; unconfirmed on the file itself); gap detection shares Live Paint’s finder, with a 72 pt custom cap and the existing options; Live Paint Gap Options | 4–8 | estimated; Shape Builder Gap Detection shares Live Paint’s spatial gap finder and temporary merge bridges (#2526); Custom is capped at 72 pt in the existing options dialog (lowered from 86%: open issues); compound attributes regression-tested (#1197); single-result source names survive SVG export/import (#1293), with [SVG ID semantics](https://www.w3.org/TR/SVG2/struct.html#IDAttribute) and original-shape tests; Simplify component selection and preview regression-tested (#1272); Simplify of a Direct Selection part of a path regression-tested (`tests/simplify_part.rs`); Divide open-cutting-path geometry and appearance regression-tested (#1307); the Shape Builder's edge-source grid is bounded in memory and files a segment once per cell (`planar.rs` test `rect_index_holds_a_bounded_number_of_references`); live compound shapes (Make, Alt-click, member Shape Modes, Release, Expand, saved and exported) regression-tested (#4522) |
-| Colour, swatches, gradients, patterns, mesh, recolor | 7 | 92% | 30.0's gradient additions are done (dither, perceptual blending, presets); freeform gradients in SVG/PDF, mixed spot/process gradients in SVG, and PDF gradients mixing a spot color with RGB or Lab stops | 4–7 | estimated; Recolor model selection is available through the engine and MCP only (#2520); the dialog retains its existing controls (lowered from 96%: target moved); unpainted zero-width stroke restoration fixed (#1253), score and hours unchanged; Eyedropper source reads regression-tested (#1251); screen-bounded Recolor Edit chip list (#3416), score and hours unchanged |
+| Colour, swatches, gradients, patterns, mesh, recolor | 7 | 92% | 30.0's gradient additions are done (dither, perceptual blending, presets); freeform gradients in SVG/PDF, mixed spot/process gradients in SVG, and PDF gradients mixing a spot color with RGB or Lab stops | 4–7 | estimated; Recolor model selection is available through the engine and MCP (#2520), and the dialog's color sliders (HSB, RGB, CMYK, Lab, Tint for a spot color) edit the selected row's new color in its mode (lowered from 96%: target moved); unpainted zero-width stroke restoration fixed (#1253), score and hours unchanged; Eyedropper source reads regression-tested (#1251); screen-bounded Recolor Edit chip list (#3416), score and hours unchanged |
 | Strokes, brushes, width profiles | 5 | 88% | Shift-double-click adjoining adjustment is implemented; brush libraries are done (four generated libraries, User Defined, Other Library…, Save Brushes); remaining:  Art brush Overlap, Pattern brush auto corners, pen pressure on macOS, tilt/bearing/rotation | 8–15 | estimated; width-point creation and adjoining adjustment regression-tested; dialog layout reviewed; evidence below; finite-arithmetic follow-up regressions and full CI passed (evidence below) |
 | Appearance, transparency, graphic styles, masks | 5 | 97% | raster effect reach in preview bounds | 1–2 | estimated |
 | 3D and Materials (and Turntable) | 4 | ~25% | live Revolve with automatic smooth vector shading and default-on continuous circular caps, Extrude & Bevel (twist, taper, caps, five bevel shapes), Inflate and Rotate with Position presets (colored Inflate uses smooth membrane lighting; white-light Inflate retains its existing shading; Extrude & Bevel and Rotate retain planar shading; one to ten colored lights, shared neutral ambient, painter visibility); materials, light presets, shadows, ray tracing, 3D Classic, Turntable views, 3D export | 30–55 | estimated (Extrude & Bevel, Inflate and Rotate added 2026-10-12) |