Effects: Scribble has a Variation for Path Overlap, Curviness and Spacing, and stores 270° as -90°

The reference app's Scribble Options have a Variation for each of Path
Overlap, Curviness and Spacing. Scribble had one `variation`, which
moved each line's ends both along the line and across it, and every
turn of a scribble took the same curviness. An angle such as 270 was
stored as given.

Scribble now takes `overlapVariation` (pt, default 0.5), which moves
the ends along the line, `spacingVariation` (pt, 0.5), which moves
them across it, and `curvinessVariation` (%, 0), which varies the
curviness from one turn to the next. The dialog shows each Variation
after the option it varies, and the Appearance panel lists all three.
A Scribble saved or scripted with the earlier `variation` reads it as
the Path Overlap and Spacing variations. With the defaults, and with
the earlier `variation`, Scribble draws the same outline as before.
`effect.apply` and `effect.setParams` store an angle above -180 and up
to 180, so 270 is stored as -90, and the dialog shows the stored value.

The Appearance panel's inline editor lists an effect's values in
their current form, as the dialog does. It listed an earlier key next
to the defaults of the keys that replace it.

Docs: docs/effects-parity.md (Stylize row), docs/target-app-parity.md.

docs/effects-parity.md

@@ -26,7 +26,7 @@ Part of [target-app-parity.md](target-app-parity.md); open work is in [gaps.md](
 | Path | Offset Path, Outline Object, Outline Stroke | 2/3 | Outline Object |
 | Pathfinder | Add, Intersect, Exclude, Subtract, Minus Back, Divide, Trim, Merge, Crop, Outline, Hard Mix, Soft Mix, Trap | 10/13 | Hard Mix, Soft Mix, Trap |
 | Rasterize | Rasterize… (as a live effect) | 0/1 | the live effect (Object › Rasterize exists) |
-| Stylize | Drop Shadow, Feather, Inner Glow, Outer Glow, Round Corners, Scribble | 6/6 | Scribble draws one zig-zag per region, with no lines across holes and notches (#1651) |
+| Stylize | Drop Shadow, Feather, Inner Glow, Outer Glow, Round Corners, Scribble | 6/6 | Scribble Options' Settings presets |
 | SVG Filters | Apply SVG Filter… and the filter list | 0/1 | the whole submenu (SVG filters on import round-trip already) |
 | Warp | Arc, Arc Lower, Arc Upper, Arch, Bulge, Shell Lower, Shell Upper, Flag, Wave, Fish, Rise, Fisheye, Inflate, Squeeze, Twist | 15/15 | warp point editing in envelopes; Arc is a circular arc in the object's own proportions (#1578) |
 

docs/target-app-parity.md

@@ -510,6 +510,7 @@ Moved from the ROADMAP's "Shipped so far" on 2026-10-10. Update it when a featur
   - Live effects with previewing dialogs: Distort & Transform, Path, Convert to Shape, 15 Warp styles, Round Corners, Scribble, Effect → Pathfinder (all 10 operations, live on groups; several loose objects are grouped first, in one undo step), Color Adjustments (Brightness/Contrast, Curves, Levels, Hue/Saturation, Shift to Color, Temperature/Tint, on vectors, live type and embedded images), and raster drop shadow, glows and feather. SVG and PDF export keep live effects (geometry baked; SVG raster effects as filters). Zig Zag spaces its ridges evenly along each segment, so lines and curves get a regular wave in Corner and Smooth (#1558). Warp › Arc (the effect and Envelope › Make with Warp) bends in the object's real proportions: a circular arc with concentric edges and no fold-over at 100%, so Arc on art that isn't square draws differently from before (#1581, fixes #1578). `effect.apply` and `effect.setParams` give an error for a misspelt or wrongly typed effect parameter instead of running the effect with its default (#1623, #1592). Roughen with Smooth keeps turn-backs smooth instead of making cusps that draw as spikes (#1646, #1643). Scribble draws one zig-zag per region, with no lines across holes and notches; convex shapes are unchanged (#1651, #1648). On the canvas, in Expand Appearance and in exports, Effect → Pathfinder uses the glyph outlines of type in the group, and results painted like the type keep its opacity and blend mode.
   - Initial live Revolve (#605, #846): a portable geometry and shading crate (`three-d`), editable path and compound profiles, compact options with artboard rotation and light gizmos, SVG/PDF vector output and Expand Appearance that can trim covered faces. Cap is on by default with continuous curved vector rims; shading uses vector gradients automatically, with sharp profile corners, uniform caps and round seam joins. One light and approximate visibility remain ([revolve.md](revolve.md)).
   - Live effects with previewing dialogs: Distort & Transform, Path, Convert to Shape, 15 Warp styles, Round Corners, Scribble, Effect → Pathfinder (all 10 operations, live on groups; several loose objects are grouped first, in one undo step), Color Adjustments (Brightness/Contrast, Curves, Levels, Hue/Saturation, Shift to Color, Temperature/Tint, on vectors, live type and embedded images), and raster drop shadow, glows and feather. SVG and PDF export keep live effects (geometry baked; SVG raster effects as filters). Zig Zag spaces its ridges evenly along each segment, so lines and curves get a regular wave in Corner and Smooth (#1558). Warp › Arc (the effect and Envelope › Make with Warp) bends in the object's real proportions: a circular arc with concentric edges and no fold-over at 100%, so Arc on art that isn't square draws differently from before (#1581, fixes #1578). `effect.apply` and `effect.setParams` give an error for a misspelt or wrongly typed effect parameter instead of running the effect with its default (#1623, #1592). Roughen with Smooth keeps turn-backs smooth instead of making cusps that draw as spikes (#1646, #1643). Scribble draws one zig-zag per region, with no lines across holes and notches; convex shapes are unchanged (#1651, #1648).
+  - Scribble (Effect › Stylize › Scribble…) has a Variation for each of Path Overlap, Curviness and Spacing ([Scribble options](https://helpx.adobe.com/illustrator/using/creating-sketches-mosaics.html)) (`overlapVariation`, `curvinessVariation`, `spacingVariation`), shown in its dialog and in the Appearance panel. A Scribble saved with the earlier single `variation` reads it as the Path Overlap and Spacing variations and draws as before. The angle is stored above -180° and up to 180°, so 270° is stored as -90°.
   - **Simplify feedback and component selection (#1272):** the existing tolerance dialog previews from the original interaction snapshot and shows original/new anchor counts. Preview off and Cancel restore the document and selection; OK is one Undo. A refit or Add Anchor Points clears component indexes only on paths whose geometry changes, keeping their objects selected whole and unchanged paths' components intact. Engine and real-egui frame regressions cover document/selection restoration and grouped paths.
     Public references: [Simplify benefits](https://helpx.adobe.com/illustrator/desktop/draw-shapes-and-paths/modify-paths/simplify-path-benefits.html) and [advanced options](https://helpx.adobe.com/illustrator/desktop/draw-shapes-and-paths/modify-paths/simplify-paths-advanced-options-overview.html).
     Nearly unchanged appearance is expected when reducing points. Percentage/auto-simplify controls, the corner-angle UI and Show Original are not implemented; the checklist is partial, without raising scores.