M6: plugin panels take a slider control (gap 6) (#1637)

ROADMAP.md

@@ -2,7 +2,7 @@
 
 **Stage: alpha** · next: beta, ~26 points and ~162–292 h away (one Opus 5.5 agent; ~33–67 h wall-clock with 5 agents)
 
-> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-30 · **Change:** minor (`figcraft-cli connect publish` publishes a code repository's code connect mappings to a design file (gap 16); while a drag only moves a large selection, its outlines, box, slots, spacing and Design panel values are worked out once and shifted, not rebuilt on every move (#1571); Shift+Cmd/Ctrl+Enter on a selected board shape adds the next shape already joined to it, and goes on typing (#1597); an imported or pasted file finds an installed family under the other names its fonts give it, and with other case and spacing, instead of reporting it missing (#1292); a development example generates figcraft-cli's shell completions and man pages from its clap definitions (part of #1396); `.fig` ZIP image reads share a total byte budget and count skipped images in the import warnings (#1076); German terminology corrections (M10): gradient stops, OpenType stylistic sets and the Home-screen preference; every file a command reads whole by path is a regular file within a cap that fits it: documents 16 GiB, placed images 256 MiB, CLI scripts 1 GiB; a component set's property rows fit the 240 px right panel: variant values wrap two to a line there and every + and − stays in view; the server key is checked by comparing SHA-256 hashes of the presented and the kept key, as the deployment guide says (#1130); opening a file contacts no team library server it names until you check it (#1097); a hostile server can no longer grow a client's memory with made-up people, and a session remembers a bounded number of deleted layer ids (#1121); `doc.list` gives AI agents and plugins the open files' names, not their paths (#1117); with a large selection, frames where nothing changed reuse the selection's outlines, box and slots and the Design panel's instance and position values instead of working them out again (#1571); team libraries and plugins larger than the 16 MiB download burst can be downloaded again, more slowly (#1089); a batch keeps one undo snapshot, not one per step (#1099); files nested 256 levels deep import on the browser's 1 MB stack (#1101); SVG and PDF exports count pattern sources and the renders they embed from the layer's depth, so one cap bounds a whole export (#1082); an explicit variables file path (`variable.import`, the `variables` of `file.open` and `file.import`) is refused past 256 MiB or when it isn't a regular file, as the sibling `variables.json` already was (part of #1114); joining and leaving a file nobody is editing reads and writes nothing on the server: it stays loaded a minute after everyone leaves (#1074); opening a `.figcraft` file unpacks at most 6 GiB in all (2 GiB in the browser), every area together (#1079); hovering the canvas hit-tests once per pointer move, not on every frame, and moving an auto layout frame no longer lays out its contents again on every move (#1571); `.fig` instance expansion no longer walks variable nodes for every instance or copies every outer override row into each nested instance (#1077); `comment.people` lists names that were only @mentioned, and `comment.next` and `comment.prompt` carry the mentions too (#1415); grid auto-placement looks for free cells a 64-bit word at a time and skips what blocks it, with the same placements (#1083); with the pen out, Enter or a double-click ends the path and edits the vector with the Move tool instead of drawing on (#1430); a recovery copy made while a version is previewed holds the file, not the version shown; a FigJam `.jam` file opens as a board (#1342); the Actions palette offers only commands that run from it, and no second row reading like a menu item: Place image opens the file dialog (#1574); share links can comment: a third access level beside edit and view, whose holder sees the file live and adds, replies to, reacts to and resolves comments but can't change the design; Preferences ▸ Scroll wheel zoom: a mouse wheel zooms the canvas about the pointer and Cmd/Ctrl+wheel scrolls (#1390); `comment.list {mentions}` lists only the threads that @mention a name (#1415); in the browser an internal error that stops the page keeps its unsaved files, which open again on reload (#1123); boolean operations refuse input past their caps, and a boolean group past them draws without its result (#1104); figcraft-cli parses its arguments with clap, following RFC-0012 (#1396); the selection and hover outlines of rounded rectangles and frames follow their corners (#1506); component properties keep the order they were made in when one is renamed, and Make slot asks for the slot's name first (#1536, #1537); the browser build publishes files to a server, so Share ▸ Online and Publish to server work there (#917); the browser build uses the fonts installed on the computer once asked, each read when text uses it (#1051); SVG import reads `color()` and `color-mix()` colours, with a note and a grey for those it can't (#1550); the portable Windows zip keeps its Line truncated
+> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-30 · **Change:** minor (every file a command reads whole by path is a regular file within a cap that fits it: documents 16 GiB, placed images 256 MiB, CLI scripts 1 GiB; `figcraft-cli connect publish` publishes a code repository's code connect mappings to a design file (gap 16); while a drag only moves a large selection, its outlines, box, slots, spacing and Design panel values are worked out once and shifted, not rebuilt on every move (#1571); Shift+Cmd/Ctrl+Enter on a selected board shape adds the next shape already joined to it, and goes on typing (#1597); an imported or pasted file finds an installed family under the other names its fonts give it, and with other case and spacing, instead of reporting it missing (#1292); a development example generates figcraft-cli's shell completions and man pages from its clap definitions (part of #1396); `.fig` ZIP image reads share a total byte budget and count skipped images in the import warnings (#1076); German terminology corrections (M10): gradient stops, OpenType stylistic sets and the Home-screen preference; every file a command reads whole by path is a regular file within a cap that fits it: documents 16 GiB, placed images 256 MiB, CLI scripts 1 GiB; a component set's property rows fit the 240 px right panel: variant values wrap two to a line there and every + and − stays in view; the server key is checked by comparing SHA-256 hashes of the presented and the kept key, as the deployment guide says (#1130); opening a file contacts no team library server it names until you check it (#1097); a hostile server can no longer grow a client's memory with made-up people, and a session remembers a bounded number of deleted layer ids (#1121); `doc.list` gives AI agents and plugins the open files' names, not their paths (#1117); with a large selection, frames where nothing changed reuse the selection's outlines, box and slots and the Design panel's instance and position values instead of working them out again (#1571); team libraries and plugins larger than the 16 MiB download burst can be downloaded again, more slowly (#1089); a batch keeps one undo snapshot, not one per step (#1099); files nested 256 levels deep import on the browser's 1 MB stack (#1101); SVG and PDF exports count pattern sources and the renders they embed from the layer's depth, so one cap bounds a whole export (#1082); an explicit variables file path (`variable.import`, the `variables` of `file.open` and `file.import`) is refused past 256 MiB or when it isn't a regular file, as the sibling `variables.json` already was (part of #1114); joining and leaving a file nobody is editing reads and writes nothing on the server: it stays loaded a minute after everyone leaves (#1074); opening a `.figcraft` file unpacks at most 6 GiB in all (2 GiB in the browser), every area together (#1079); hovering the canvas hit-tests once per pointer move, not on every frame, and moving an auto layout frame no longer lays out its contents again on every move (#1571); `.fig` instance expansion no longer walks variable nodes for every instance or copies every outer override row into each nested instance (#1077); `comment.people` lists names that were only @mentioned, and `comment.next` and `comment.prompt` carry the mentions too (#1415); grid auto-placement looks for free cells a 64-bit word at a time and skips what blocks it, with the same placements (#1083); with the pen out, Enter or a double-click ends the path and edits the vector with the Move tool instead of drawing on (#1430); a recovery copy made while a version is previewed holds the file, not the version shown; a FigJam `.jam` file opens as a board (#1342); the Actions palette offers only commands that run from it, and no second row reading like a menu item: Place image opens the file dialog (#1574); share links can comment: a third access level beside edit and view, whose holder sees the file live and adds, replies to, reacts to and resolves comments but can't change the design; Preferences ▸ Scroll wheel zoom: a mouse wheel zooms the canvas about the pointer and Cmd/Ctrl+wheel scrolls (#1390); `comment.list {mentions}` lists only the threads that @mention a name (#1415); in the browser an internal error that stops the page keeps its unsaved files, which open again on reload (#1123); boolean operations refuse input past their caps, and a boolean group past them draws without its result (#1104); figcraft-cli parses its arguments with clap, following RFC-0012 (#1396); the selection and hover outlines of rounded rectangles and frames follow their corners (#1506); component properties keep the order they were made in when one is renamed, and Make slot asks for the slot's name first (#1536, #1537); the browser build publishes files to a server, so Share ▸ Online and Publish to server work there (#917); the browser build uses the fonts installed on the computer once asked, each read when text uses it (#1Line truncated
 
 FigCraft is a clean-room, open-source, pure-Rust reimplementation of the Figma design workflow,
 native on macOS, Windows, Linux and FreeBSD and in the browser, fully drivable by agents through
@@ -356,6 +356,7 @@ Ranked; detail and milestones in [`docs/roadmap.md`](docs/roadmap.md).
 
 | Date | Change | Summary |
 |---|---|---|
+| 2026-10-30 | minor | M6, gap 6: plugin panels (and plugin command forms) take a `slider` control: a number between a required `min` and `max`, drawn as a slider with the value field beside it, named for screen readers as a slider with its range. Dragging shows the value live and calls the plugin back once, when let go (one undo step); typing in the field or double-clicking the slider (back to the panel's value) do the same. The slider is the one the Type settings' variable axes used, moved into the shared widgets, which also gives those axis sliders a screen-reader name. Numbers unchanged. Tests: `v2_tests::panels_are_validated_and_keep_entered_values`, `plugin_panel_tests::a_slider_calls_the_plugin_back_once_when_let_go`. |
 | 2026-10-30 | minor | M6, gap 16: `figcraft-cli connect publish <file.figcraft> [--mappings FILE] [--dry-run]` publishes a code repository's code connect mappings (`figcraft.connect.json`, as Export code connections writes it) to a design file: each link connects the components or sets of that name to their code for its language; links that don't fit are warnings and are skipped; the file is saved in place through the engine's `file.save` (whole or not at all, version history kept); a dry run saves nothing; nothing linked is exit code 1. Numbers unchanged. Tests: `files::tests::connect_publish_links_components_and_saves_the_file`, `args` tests. |
 | 2026-10-30 | minor | M8, #1571 (part 3): the first frame after each move of a drag rebuilt the selection's outlines and box, its slots, the selection spacing and the Design panel's values from the new document. Now the engine notes when a drag has only moved the selected layers, each by the same offset from where it started (`Interaction::moved_by`: not for a layer in an auto layout flow, nor an Alt copy), and the canvas and panel work those out once from the document the drag started from and shift what depends on position (the outlines on screen, the box); the Design panel shows that document's values, all but the position fields, which follow the move. The Export section's values are kept too. Nothing looks different. Dragging 648 of about 1,900 synthetic layers (release build, two runs each): the UI pass 2.10 to 1.44 ms a frame, CPU 135% to 117% of a core; the Design panel 0.9 to 0.5 ms, the overlays 0.5 to 0.3 ms. Not yet: the engine's preview of each move (copying and normalising the document) and the canvas texture's whole upload. Tests: `moved_by_tests.rs`, `canvas/selection_cache_tests.rs`. |
 | 2026-10-30 | minor | M12, #1597 (the third point): Shift+Cmd/Ctrl+Enter (`board.nextSticky`) now works on a selected or edited shape too: it adds the next shape of the same kind, size and colour on its right (or the `side` given), joined to it by a connector and with typing going on in it, as the "+" beside it does (`board.addConnected`, #1631). On a sticky it adds a sticky beside it without a connector, as before. Numbers unchanged. Tests: `board_connected_tests::the_next_sticky_shortcut_joins_the_next_shape_and_leaves_stickies_as_they_were`, `board_ui_tests::the_next_shape_from_the_keyboard_comes_connected_and_goes_on_typing`. |

crates/plugin/src/manifest.rs

@@ -143,7 +143,7 @@ pub struct Param {
     /// The choices of a `select` or `list`.
     #[serde(default, skip_serializing_if = "Vec::is_empty")]
     pub options: Vec<String>,
-    /// Bounds of a `number`.
+    /// Bounds of a `number` (or a `slider`, which needs both).
     #[serde(default, skip_serializing_if = "Option::is_none")]
     pub min: Option<f64>,
     #[serde(default, skip_serializing_if = "Option::is_none")]
@@ -163,6 +163,8 @@ pub enum ParamKind {
     Color,
     /// One of `options`, shown as a list rather than a menu.
     List,
+    /// A number between `min` and `max` (both required), shown as a slider.
+    Slider,
     /// Panels only: a button (it has no value).
     Button,
     /// Panels only: text (`label`, up to 1000 characters).
@@ -187,7 +189,7 @@ impl Param {
         }
         match self.kind {
             ParamKind::Text => Value::String(String::new()),
-            ParamKind::Number => serde_json::json!(self.clamp(0.0)),
+            ParamKind::Number | ParamKind::Slider => serde_json::json!(self.clamp(0.0)),
             ParamKind::Boolean => Value::Bool(false),
             ParamKind::Select | ParamKind::List => self.options.first().map_or(Value::Null, |o| Value::String(o.clone())),
             ParamKind::Color => Value::String("#000000".into()),
@@ -205,7 +207,7 @@ impl Param {
                 Value::Number(n) => Ok(Value::String(n.to_string())),
                 _ => Err(format!("`{name}` must be text")),
             },
-            ParamKind::Number => {
+            ParamKind::Number | ParamKind::Slider => {
                 let n = match v {
                     Value::Number(n) => n.as_f64(),
                     Value::String(s) => s.trim().parse::<f64>().ok(),
@@ -253,6 +255,9 @@ impl Param {
         {
             return Err(format!("parameter `{}` has bad bounds", self.name));
         }
+        if self.kind == ParamKind::Slider && (self.min.is_none() || self.max.is_none()) {
+            return Err(format!("slider `{}` needs a `min` and a `max`", self.name));
+        }
         self.default = self.default.as_ref().and_then(|d| self.coerce(d).ok());
         Ok(())
     }

crates/plugin/src/v2_tests.rs

@@ -122,6 +122,7 @@ fn panels_are_validated_and_keep_entered_values() {
             {"type": "color", "name": "accent", "value": "#f0a"},
             {"type": "number", "name": "n", "min": 1, "max": 4, "value": 9},
             {"type": "text", "name": "t"},
+            {"type": "slider", "name": "o", "min": 0, "max": 100, "value": -5},
             {"type": "button", "name": "go", "label": "Go"}
         ]}"##,
     )
@@ -129,12 +130,16 @@ fn panels_are_validated_and_keep_entered_values() {
     assert_eq!(p.control("accent").unwrap().default, Some(json!("#FF00AA")));
     assert_eq!(p.control("n").unwrap().default, Some(json!(4.0)), "values are clamped");
     assert_eq!(p.control("go").unwrap().kind, ParamKind::Button);
+    let o = p.control("o").unwrap();
+    assert_eq!((o.kind, o.default.clone()), (ParamKind::Slider, Some(json!(0.0))), "a slider is clamped like a number");
+    assert_eq!(o.coerce(&json!("250")), Ok(json!(100.0)));
+    assert!(o.coerce(&json!(true)).is_err());
     let mut old = Map::new();
     old.insert("t".into(), json!("typed"));
     old.insert("palette".into(), json!("Warm"));
     assert_eq!(
         json!(p.values(&old)),
-        json!({"palette": "Cool", "accent": "#FF00AA", "n": 4.0, "t": "typed"}),
+        json!({"palette": "Cool", "accent": "#FF00AA", "n": 4.0, "t": "typed", "o": 0.0}),
         "the spec's values win, then the entered ones"
     );
     let deep = format!("{{\"controls\": {}{}}}", "[".repeat(5000), "]".repeat(5000));
@@ -148,6 +153,8 @@ fn panels_are_validated_and_keep_entered_values() {
         r#"{"controls": [{"type": "list", "name": "x"}]}"#,
         r#"{"controls": [{"type": "button", "name": "a"}, {"type": "text", "name": "a"}]}"#,
         r#"{"controls": [{"type": "number", "name": "a", "min": 3, "max": 1}]}"#,
+        r#"{"controls": [{"type": "slider", "name": "a", "min": 3}]}"#,
+        r#"{"controls": [{"type": "slider", "name": "a", "max": 3}]}"#,
         r#"{"title": "line\nbreak"}"#,
         &deep,
         &many,

crates/ui-egui/src/a11y.rs

@@ -910,6 +910,19 @@ pub fn number(resp: &Response, label: &str, value: Option<f64>, suffix: &str, em
     });
 }
 
+/// A slider over `min`..=`max` at `value` (None = mixed).
+pub fn slider(resp: &Response, label: &str, value: Option<f64>, min: f64, max: f64) {
+    node(resp, label, |n| {
+        n.set_role(Role::Slider);
+        n.set_min_numeric_value(min);
+        n.set_max_numeric_value(max);
+        if let Some(v) = value {
+            n.set_numeric_value(v);
+            n.set_value(crate::widgets::fmt_num(v));
+        }
+    });
+}
+
 /// A text field showing `value`.
 pub fn text(resp: &Response, label: &str, value: &str) {
     node(resp, label, |n| {

crates/ui-egui/src/dialogs/plugins_ui.rs

@@ -56,6 +56,8 @@ pub struct PluginsWindow {
 
 /// Width of the plugin windows' fields.
 const FIELD_W: f32 = 220.0;
+/// The value field beside a slider.
+const SLIDER_VALUE_W: f32 = 56.0;
 /// How far apart plugin panels open, side by side (a panel and a gap).
 const PANEL_STEP: f32 = 372.0;
 
@@ -651,6 +653,33 @@ fn field(ui: &mut Ui, id: Id, p: &Param, current: &Value) -> Option<Used> {
             FieldEdit::Set(v) | FieldEdit::Scrub(v, true) => p.coerce(&json!(v)).ok(),
             FieldEdit::Scrub(_, false) => None,
         },
+        // A slider and its value: dragging shows the value live and calls the plugin back once,
+        // when let go (each call is an undo step).
+        ParamKind::Slider => {
+            let (min, max) = (p.min.unwrap_or(0.0), p.max.unwrap_or(1.0));
+            let live = id.with("live");
+            let shown = ui.data(|d| d.get_temp::<f64>(live)).or(current.as_f64());
+            let (slid, typed) = ui
+                .horizontal(|ui| {
+                    ui.spacing_mut().item_spacing.x = 6.0;
+                    let slid = widgets::slider(ui, id.with("slider"), min..=max, None, shown, FIELD_W - SLIDER_VALUE_W - 6.0, name);
+                    (slid, widgets::number_field(ui, id, Lead::Named(name), shown, "", SLIDER_VALUE_W, (max - min) / 100.0))
+                })
+                .inner;
+            let done = match (slid, typed) {
+                (Some((Some(v), false)), _) => {
+                    ui.data_mut(|d| d.insert_temp(live, v));
+                    None
+                }
+                (Some((v, true)), _) => Some(v.map_or_else(|| p.default_value(), |v| json!(v))),
+                (_, Some(FieldEdit::Set(v) | FieldEdit::Scrub(v, true))) => Some(json!(v)),
+                _ => None,
+            };
+            if done.is_some() {
+                ui.data_mut(|d| d.remove::<f64>(live));
+            }
+            done.and_then(|v| p.coerce(&v).ok())
+        }
         ParamKind::Boolean => {
             let on = current.as_bool().unwrap_or(false);
             widgets::checkbox(ui, on, name).then_some(Value::Bool(!on))

crates/ui-egui/src/panels/typography/axes.rs

@@ -1,7 +1,7 @@
 use super::fields::menu_item_hover;
 use super::{
-    Color32, CornerRadius, FIELD_H, FieldEdit, FigApp, Id, Lead, MIXED, NodeId, Rect, Sense, Stroke, TextStyle, Tokens, Ui, Value, commit_text, json,
-    pos2, regular, text_style_params, tr, trf, trim_num, uniform, vec2, widgets,
+    FIELD_H, FieldEdit, FigApp, Id, Lead, MIXED, NodeId, Sense, TextStyle, Tokens, Ui, Value, commit_text, json, pos2, regular, text_style_params,
+    tr, trf, trim_num, uniform, vec2, widgets,
 };
 
 /// Type settings ▸ Variable: the font's named instances, then a slider and a field per visible
@@ -55,7 +55,7 @@ pub(super) fn variable_axes(app: &mut FigApp, ui: &mut Ui, ids: &[NodeId], style
             );
             ui.interact(lr, Id::unique(("ty_axis_label", &axis.tag)), Sense::hover()).on_hover_text(tip);
             ui.painter().galley(pos2(lr.min.x, lr.center().y - name.size().y / 2.0), name, t.text);
-            match axis_slider(ui, Id::unique(("ty_axis_slider", &axis.tag)), axis, shown, slider_w) {
+            match widgets::slider(ui, Id::unique(("ty_axis_slider", &axis.tag)), axis.min..=axis.max, Some(axis.default), shown, slider_w, &axis.name) {
                 Some((Some(v), done)) => set = Some((json!(round_axis(axis, v)), done)),
                 Some((None, _)) => set = Some((Value::Null, true)),
                 None => {}
@@ -152,39 +152,3 @@ fn named_instances(
 pub(super) fn round_axis(axis: &figcraft_text::Axis, v: f64) -> f64 {
     if axis.max - axis.min > 20.0 { v.round() } else { (v * 10.0).round() / 10.0 }
 }
-
-/// A horizontal slider over an axis's range with a tick at its default. `value` None = mixed.
-/// Returns the new value (None = double-click: back to the style's value) and whether the
-/// gesture ended.
-fn axis_slider(ui: &mut Ui, id: Id, axis: &figcraft_text::Axis, value: Option<f64>, width: f32) -> Option<(Option<f64>, bool)> {
-    let t = Tokens::get(ui.ctx());
-    let (rect, _) = ui.allocate_exact_size(vec2(width, FIELD_H), Sense::hover());
-    let resp = ui.interact(rect, id, Sense::click_and_drag());
-    let track = Rect::from_center_size(rect.center(), vec2(width - 12.0, 4.0));
-    let span = (axis.max - axis.min).max(1e-9);
-    let x_of = |v: f64| track.min.x + ((v - axis.min) / span).clamp(0.0, 1.0) as f32 * track.width();
-    let p = ui.painter();
-    p.rect_filled(track, CornerRadius::same(2), t.border);
-    let dx = x_of(axis.default);
-    p.line_segment([pos2(dx, track.min.y - 3.0), pos2(dx, track.max.y + 3.0)], Stroke::new(1.0, t.border_strong));
-    if let Some(v) = value {
-        let x = x_of(v);
-        p.rect_filled(Rect::from_min_max(track.min, pos2(x, track.max.y)), CornerRadius::same(2), t.accent);
-        p.circle_filled(pos2(x, track.center().y), 6.0, Color32::WHITE);
-        let ring = if resp.hovered() || resp.dragged() { crate::theme::ACCENT } else { t.border_strong };
-        p.circle_stroke(pos2(x, track.center().y), 6.0, Stroke::new(1.0, ring));
-    }
-    if resp.double_clicked() {
-        return Some((None, true));
-    }
-    if (resp.dragged() || resp.clicked() || resp.drag_started())
-        && let Some(pos) = resp.interact_pointer_pos()
-    {
-        let f = f64::from(((pos.x - track.min.x) / track.width().max(1.0)).clamp(0.0, 1.0));
-        return Some((Some(axis.min + f * span), resp.drag_stopped() || resp.clicked()));
-    }
-    if resp.drag_stopped() {
-        return value.map(|v| (Some(v), true));
-    }
-    None
-}

crates/ui-egui/src/plugin_panel_tests.rs

@@ -22,6 +22,7 @@ pub(crate) fn panel_module() -> Vec<u8> {
         {"type": "color", "name": "accent", "label": "Accent", "value": "#FF5A5F"},
         {"type": "select", "name": "shape", "label": "Shape", "options": ["Square", "Circle"]},
         {"type": "text", "name": "title", "label": "Title"},
+        {"type": "slider", "name": "opacity", "label": "Opacity", "min": 0, "max": 100, "value": 0},
         {"type": "button", "name": "go", "label": "Go"}
     ]})
     .to_string();
@@ -67,7 +68,7 @@ fn the_panel_names_its_controls_and_its_button_calls_the_plugin_back() {
     u.frame(vec![]);
     let tree = u.frame_output(vec![]).platform_output.accesskit_update.unwrap().nodes;
     let named = |label: &str| tree.iter().map(|(_, n)| n).find(|n| n.label() == Some(label)).cloned();
-    for label in ["Size", "Labels", "Warm", "Cool", "Accent", "Shape", "Title", "Go"] {
+    for label in ["Size", "Labels", "Warm", "Cool", "Accent", "Shape", "Title", "Opacity", "Go"] {
         assert!(named(label).is_some(), "no control named {label:?}");
     }
     let go = named("Go").and_then(|n| n.bounds()).unwrap();
@@ -122,3 +123,31 @@ fn a_colour_field_opens_the_colour_picker_and_two_panels_show_side_by_side() {
     let accents = nodes(&mut u).iter().filter(|(_, n)| n.label() == Some("Accent")).count();
     assert_eq!((accents, u.app.session.plugins.panels.len()), (2, 2), "both panels are drawn");
 }
+
+/// A slider shows the value it is dragged to as it moves and calls the plugin back once, with
+/// that value, when let go.
+#[test]
+fn a_slider_calls_the_plugin_back_once_when_let_go() {
+    let mut u = Ui::new(session());
+    u.ctx.enable_accesskit();
+    u.frame(vec![]);
+    let slider = |u: &mut Ui| {
+        let nodes = u.frame_output(vec![]).platform_output.accesskit_update.unwrap().nodes;
+        nodes.into_iter().map(|(_, n)| n).find(|n| n.role() == egui::accesskit::Role::Slider && n.label() == Some("Opacity")).unwrap()
+    };
+    let s = slider(&mut u);
+    assert_eq!((s.min_numeric_value(), s.max_numeric_value(), s.numeric_value()), (Some(0.0), Some(100.0), Some(0.0)));
+    let b = s.bounds().unwrap();
+    let y = ((b.y0 + b.y1) / 2.0) as f32;
+    let (from, to) = (Pos2::new(b.x0 as f32 + 6.0, y), Pos2::new(((b.x0 + b.x1) / 2.0) as f32, y));
+    let before = layers(&u);
+    u.drag_to(from, to);
+    let live = slider(&mut u).numeric_value().unwrap();
+    assert!((live - 50.0).abs() < 2.0, "the knob follows the drag: {live}");
+    assert_eq!(layers(&u), before, "no call while dragging");
+    u.button(to, false);
+    assert_eq!(layers(&u), before + 1, "one call when let go");
+    assert_eq!(u.app.session.ds().unwrap().history.undo.len(), 1);
+    let value = u.app.session.plugins.panel("org.test.panel").unwrap().values["opacity"].as_f64().unwrap();
+    assert!((value - live).abs() < 1e-9, "the plugin got the dragged value: {value}");
+}

crates/ui-egui/src/widgets.rs

@@ -1021,6 +1021,54 @@ pub fn swatch(ui: &mut Ui, paint: &figcraft_color::Paint, size: f32) -> Response
     swatch_named(ui, paint, size, tr("Color"))
 }
 
+/// A horizontal slider over `range` named `name` for screen readers, with a tick at `mark`.
+/// `value` None = mixed (no knob). Returns the new value (None = double-click: back to the
+/// default) and whether the gesture ended.
+pub fn slider(
+    ui: &mut Ui,
+    id: Id,
+    range: std::ops::RangeInclusive<f64>,
+    mark: Option<f64>,
+    value: Option<f64>,
+    width: f32,
+    name: &str,
+) -> Option<(Option<f64>, bool)> {
+    let t = Tokens::get(ui.ctx());
+    let (min, max) = (*range.start(), *range.end());
+    let (rect, _) = ui.allocate_exact_size(vec2(width, FIELD_H), Sense::hover());
+    let resp = ui.interact(rect, id, Sense::click_and_drag());
+    a11y::slider(&resp, name, value, min, max);
+    let track = Rect::from_center_size(rect.center(), vec2(width - 12.0, 4.0));
+    let span = (max - min).max(1e-9);
+    let x_of = |v: f64| track.min.x + ((v - min) / span).clamp(0.0, 1.0) as f32 * track.width();
+    let p = ui.painter();
+    p.rect_filled(track, CornerRadius::same(2), t.border);
+    if let Some(m) = mark {
+        let dx = x_of(m);
+        p.line_segment([pos2(dx, track.min.y - 3.0), pos2(dx, track.max.y + 3.0)], Stroke::new(1.0, t.border_strong));
+    }
+    if let Some(v) = value {
+        let x = x_of(v);
+        p.rect_filled(Rect::from_min_max(track.min, pos2(x, track.max.y)), CornerRadius::same(2), t.accent);
+        p.circle_filled(pos2(x, track.center().y), 6.0, Color32::WHITE);
+        let ring = if resp.hovered() || resp.dragged() { crate::theme::ACCENT } else { t.border_strong };
+        p.circle_stroke(pos2(x, track.center().y), 6.0, Stroke::new(1.0, ring));
+    }
+    if resp.double_clicked() {
+        return Some((None, true));
+    }
+    if (resp.dragged() || resp.clicked() || resp.drag_started())
+        && let Some(pos) = resp.interact_pointer_pos()
+    {
+        let f = f64::from(((pos.x - track.min.x) / track.width().max(1.0)).clamp(0.0, 1.0));
+        return Some((Some(min + f * span), resp.drag_stopped() || resp.clicked()));
+    }
+    if resp.drag_stopped() {
+        return value.map(|v| (Some(v), true));
+    }
+    None
+}
+
 /// [`swatch`] with the screen reader's name for the field it belongs to, so a panel's swatches
 /// are told apart from every other colour control (and from each other).
 pub fn swatch_named(ui: &mut Ui, paint: &figcraft_color::Paint, size: f32, label: &str) -> Response {

docs/gaps.md

@@ -1,6 +1,6 @@
 # Where FigCraft falls short of Figma
 
-> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-29 · **Change:** minor (colour picker review fixes for text undo, fitted sidebars, moving controls and gradient variables; gap 7: the browser draws a zoom's full render a band at a time; `.fig` import keeps the file's saved line breaks while the text and its box are unedited (#1236); FigJam outer shape outlines and sticky body fallback beside author text (#1341, #1397); Arabic draft catalog; gap 7: the browser refines a zoom's preview once the zoom has paused; gap 17: branches in live sessions, branch history entries, the list-merge rows brought up to date; gap 6: plugin widgets take text input and a property menu (plugin API 4); gap 24: board templates and tables; gap 24: a shared timer and voting sessions; gap 24: the board dot grid, connector ends dragged to re-attach, curved connectors; egui/eframe 0.37 verified for gap 18; known gaps from the #1311 review in gaps 4, 14, 15 and 16; gap 16: measurements kept on the canvas, a read-only layers panel in Dev Mode; gap 24: boards and their tail; Dev Mode tail: import lines in layer trees, compare with versions, an inspect-only canvas; gap 5: reviewed Turkish, Czech and Indonesian drafts, the Japanese draft completed; reviewed Russian catalog and integer plurals; `.fig` export: instance sizes, variables with modes, shared styles, variable-width strokes; sharing with a join code; text box sizes measured against documents re-saved by other software; live sessions per document; .fig export checked by opening written files in other software; experimental .fig export; keyboard shortcut parity suite and bindings; Simplified Chinese draft catalog; Latin American Spanish overlay; prototyping tail: gamepad triggers, widgets in prototypes, mode lookups; plugin directory on figcraft-server; Japanese and Korean draft catalogs and CJK UI fonts; plugin widgets and the plugin panel tail; French, German and Brazilian Portuguese draft catalogs; cursor chat and spotlight in live sessions; layers and assets panels behaviour suite and fixes; vector multi-edit and edit tail; dev resources links; extended collections tail; branch version history and finer list merges; comments and version history behaviour suite and fixes; canvas navigation, guides and grids behaviour suite and fixes; `.fig` import: editable vector networks, more layer kinds, variable prototype actions; `.fig` import, best effort: gap 1 down to its tail; Windows QA pass: everyday workflows on Windows 11, eight fixes incl. unsaved work kept after a crash or a forced quit; Display P3: gamut warning and soft-proof (true P3 blocked upstream); several windows; localization layer with a draft Spanish catalog; hosting figcraft-server: wss in the desktop app, server releases, deployment guide; plugin panels and settings; canvas fixes: boolean hit testing on the result, group drags, frame outlines and slices; code connect; stretch and scatter brushes, pen pressure; text on a path and pattern fills; team libraries on the server and swap library; branches: create, update from main, review and merge; animated GIF fills and TIFF images; Open recent, outlines for the selection and mask outlines: menu breadth 100%; extended collections, variables import/export, gradient stop and variant bindings: gap 14 down to its tail; the 2026-10-17 landings: `.fig` import fidelity, budgets for large files, the import report, a `.fig` copy from Save as and paste from another design app (gap 1); menus, the Actions palette, editor fixes, Selection colors and smart-selection spacing (gap 4); catalog counts re-measured (gap 5); bounded canvas pan overscan; reviewed Russian catalog and integer plurals; `.fig` export: instance sizes, variables with modes, shared styles, variable-width strokes; sharing with a join code; text box sizes measured against documents re-saved by other software; live sessions per document; .fig export checked by opening written files in other software; experimental .fig export; keyboard shortcut parity suite and bindings; Simplified Chinese draft catalog; Latin American Spanish overlay; prototyping tail: gamepad triggers, widgets in prototypes, mode lookups; plugin directory on figcraft-server; Japanese and Korean draft catalogs and CJK UI fonts; plugin widgets and the plugin panel tail; French, German and Brazilian Portuguese draft catalogs; cursor chat and spotlight in live sessions; layers and assets panels behaviour suite and fixes; vector multi-edit and edit tail; dev resources links; extended collections tail; branch version history and finer list merges; comments and version history behaviour suite and fixes; canvas navigation, guides and grids behaviour suite and fixes; `.fig` import: editable vector networks, more layer kinds, variable prototype actions; `.fig` import, best effort: gap 1 down to its tail; Windows QA pass: everyday workflows on Windows 11, eight fixes incl. unsaved work kept after a crash or a forced quit; Display P3: gamut warning and sLine truncated
+> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-29 · **Change:** minor (colour picker review fixes for text undo, fitted sidebars, moving controls and gradient variables; colour picker review fixes for text undo, fitted sidebars, moving controls and gradient variables; gap 7: the browser draws a zoom's full render a band at a time; `.fig` import keeps the file's saved line breaks while the text and its box are unedited (#1236); FigJam outer shape outlines and sticky body fallback beside author text (#1341, #1397); Arabic draft catalog; gap 7: the browser refines a zoom's preview once the zoom has paused; gap 17: branches in live sessions, branch history entries, the list-merge rows brought up to date; gap 6: plugin widgets take text input and a property menu (plugin API 4); gap 24: board templates and tables; gap 24: a shared timer and voting sessions; gap 24: the board dot grid, connector ends dragged to re-attach, curved connectors; egui/eframe 0.37 verified for gap 18; known gaps from the #1311 review in gaps 4, 14, 15 and 16; gap 16: measurements kept on the canvas, a read-only layers panel in Dev Mode; gap 24: boards and their tail; Dev Mode tail: import lines in layer trees, compare with versions, an inspect-only canvas; gap 5: reviewed Turkish, Czech and Indonesian drafts, the Japanese draft completed; reviewed Russian catalog and integer plurals; `.fig` export: instance sizes, variables with modes, shared styles, variable-width strokes; sharing with a join code; text box sizes measured against documents re-saved by other software; live sessions per document; .fig export checked by opening written files in other software; experimental .fig export; keyboard shortcut parity suite and bindings; Simplified Chinese draft catalog; Latin American Spanish overlay; prototyping tail: gamepad triggers, widgets in prototypes, mode lookups; plugin directory on figcraft-server; Japanese and Korean draft catalogs and CJK UI fonts; plugin widgets and the plugin panel tail; French, German and Brazilian Portuguese draft catalogs; cursor chat and spotlight in live sessions; layers and assets panels behaviour suite and fixes; vector multi-edit and edit tail; dev resources links; extended collections tail; branch version history and finer list merges; comments and version history behaviour suite and fixes; canvas navigation, guides and grids behaviour suite and fixes; `.fig` import: editable vector networks, more layer kinds, variable prototype actions; `.fig` import, best effort: gap 1 down to its tail; Windows QA pass: everyday workflows on Windows 11, eight fixes incl. unsaved work kept after a crash or a forced quit; Display P3: gamut warning and soft-proof (true P3 blocked upstream); several windows; localization layer with a draft Spanish catalog; hosting figcraft-server: wss in the desktop app, server releases, deployment guide; plugin panels and settings; canvas fixes: boolean hit testing on the result, group drags, frame outlines and slices; code connect; stretch and scatter brushes, pen pressure; text on a path and pattern fills; team libraries on the server and swap library; branches: create, update from main, review and merge; animated GIF fills and TIFF images; Open recent, outlines for the selection and mask outlines: menu breadth 100%; extended collections, variables import/export, gradient stop and variant bindings: gap 14 down to its tail; the 2026-10-17 landings: `.fig` import fidelity, budgets for large files, the import report, a `.fig` copy from Save as and paste from another design app (gap 1); menus, the Actions palette, editor fixes, Selection colors and smart-selection spacing (gap 4); catalog counts re-measured (gap 5); bounded canvas pan overscan; reviewed Russian catalog and integer plurals; `.fig` export: instance sizes, variables with modes, shared styles, variable-width strokes; sharing with a join code; text box sizes measured against documents re-saved by other software; live sessions per document; .fig export checked by opening written files in other software; experimental .fig export; keyboard shortcut parity suite and bindings; Simplified Chinese draft catalog; Latin American Spanish overlay; prototyping tail: gamepad triggers, widgets in prototypes, mode lookups; plugin directory on figcraft-server; Japanese and Korean draft catalogs and CJK UI fonts; plugin widgets and the plugin panel tail; French, German and Brazilian Portuguese draft catalogs; cursor chat and spotlight in live sessions; layers and assets panels behaviour suite and fixes; vector multi-edit and edit tail; dev resources links; extended collections tail; branch version history and finer list merges; comments and version history behaviour suite and fixes; canvas navigation, guides and grids behaviour suite and fixes; `.fig` import: editable vector networks, more layer kinds, variable prototype actions; `.fig` import, best effort: gap 1 down to its tail; Windows QA pass: everyday workflows on Windows 11, Line truncated
 
 Every known shortfall against Figma, one entry each, ranked by how much it stops a Figma user from
 doing real work in FigCraft. Agents: pick work from the top unless the owner says otherwise. The
@@ -255,10 +255,13 @@ No alpha blockers: the alpha gate in [`roadmap.md`](roadmap.md#alpha-gate) passe
   (the value, cleaned and capped, goes into the widget's state and the plugin redraws; one undo
   step), and a widget can carry a property menu of actions, toggles and colour choices, shown in a
   small bar while it's selected and driven with `widget.menu`; the Counter example uses both.
+  Sliders (2026-10-30): a panel control or command parameter of type `slider` (a number between
+  its `min` and `max`) is drawn as a slider with its value beside it; the plugin is called back
+  once, when the drag ends.
 - **Missing:** a public catalogue and Community files, publisher accounts and signatures, ratings
   and install counts, background update checks, the directory in the browser build; widgets have no hover or
   timers, can't open a panel and draw only frames, text, shapes and images;
-  no images or sliders in panels. Figma's own plugins are JavaScript against Figma's plugin API and
+  no images in panels. Figma's own plugins are JavaScript against Figma's plugin API and
   don't run.
 - **Impact:** teams that depend on specific Figma plugins (icons, content, accessibility checks)
   can't bring them. FigCraft's CLI, control channel and MCP server cover agent automation better
@@ -565,6 +568,7 @@ No alpha blockers: the alpha gate in [`roadmap.md`](roadmap.md#alpha-gate) passe
 
 | Date | Change | Summary |
 |---|---|---|
+| 2026-10-30 | minor | Gap 6: plugin panels and command forms take a `slider` control (a number between a required `min` and `max`), drawn as a slider with its value field beside it; the plugin is called back once when a drag ends, one undo step. "Sliders" leaves the missing list; estimate unchanged. Tests: `v2_tests::panels_are_validated_and_keep_entered_values`, `plugin_panel_tests::a_slider_calls_the_plugin_back_once_when_let_go` |
 | 2026-10-30 | minor | Gap 16: `figcraft-cli connect publish` publishes a repository's `figcraft.connect.json` to a design file (links by component name, warnings for links that don't fit, `--dry-run`, exit 1 when nothing links). The CLI part leaves the missing list; the Dev Mode file-rename check remains; estimate unchanged. Tests: `files::tests::connect_publish_links_components_and_saves_the_file`, the CLI argument tests |
 | 2026-10-29 | minor | Colour picker review follow-up: opening the first picker preserves a text undo interaction; placement follows the rendered sidebar; opening controls track their widget ids while moving; linked selection-colour names toggle closed; gradient variable-picker presses keep the parent open. Regression tests cover each case; estimates unchanged. |
 | 2026-10-29 | minor | Colour pickers dismiss on presses outside their card, including the sidebar, and open 8 pt beside the sidebar aligned to their control (lifted to fit the screen); switching targets resets a dragged position and commits pending edits. Eyedropper sampling stays open. UI regression tests cover added fills/strokes and page colours; headline estimates unchanged. |

docs/plugins.md

@@ -72,7 +72,7 @@ A message the plugin shows (`notify`) appears as a toast; so does a text result.
 
 **Plugin panels.** A plugin written for API 2 can show a panel while it runs: a floating window,
 first placed beside the properties panel (drag its title bar to move it), with the plugin's notes,
-fields (text, number, checkbox, menu, list, colour) and buttons, drawn with FigCraft's own widgets
+fields (text, number, slider, checkbox, menu, list, colour) and buttons, drawn with FigCraft's own widgets
 and named for screen readers. A colour field's swatch opens FigCraft's colour picker (the plugin hears
 of the colour when a drag in the picker ends); its hex can also be typed. Pressing a button or
 changing a field calls the plugin back with every field's value; what that callback does is one
@@ -246,7 +246,7 @@ plugin directory requests (`plugin.directory.*` says so). Import plugins with `p
 | `permissions.access` | `read` (the default): commands that leave the document as it is; such plugins also run from Dev Mode's Inspect tab. `write`: edits too. |
 | `permissions.commands` | Optional allowlist: exact command ids or prefixes ending in `*` (`node.*`). Empty: any command the access allows. |
 | `commands` | The menu commands, each `{id, label, params?}`. Without any, the plugin has one, `run`, unless it's a widget (a widget needs no command). |
-| `params[]` | `{name, label?, type, default?, options?, min?, max?}`; `type` is `text`, `number` (clamped to `min`/`max`), `boolean`, `select` (one of `options`, a menu), `list` (one of `options`, shown as a list) or `color` (hex, `#RRGGBB` or `#RRGGBBAA`). A default that doesn't fit is dropped. |
+| `params[]` | `{name, label?, type, default?, options?, min?, max?}`; `type` is `text`, `number` (clamped to `min`/`max`), `boolean`, `select` (one of `options`, a menu), `list` (one of `options`, shown as a list), `slider` (a number between `min` and `max`, both required, shown as a slider with its value beside it) or `color` (hex, `#RRGGBB` or `#RRGGBBAA`). A default that doesn't fit is dropped. |
 
 ## What a plugin can't do
 
@@ -371,7 +371,7 @@ plugin is removed.
 ```
 
 `title` defaults to the plugin's name. Controls are the manifest's parameter types (`text`,
-`number`, `boolean`, `select`, `list`, `color`) plus `button` and `note` (text in `label`, up to
+`number`, `boolean`, `select`, `list`, `slider`, `color`) plus `button` and `note` (text in `label`, up to
 1,000 characters, no `name` needed), in order, each `name` unique. A field shows its `value`; a
 field without one keeps what the user entered before the panel was updated, so a plugin can update
 a note without resetting the other fields. Buttons next to each other share a row; the first button
@@ -517,7 +517,7 @@ import what you need from `figcraft`.
 - Widgets: clicks, field edits and menu items are their only events (no hover or timers), a field
   is plain text (no placeholder, length or single-line setting), they can't open a panel, and their layers are frames, text, rectangles, ellipses and images only (no
   vectors, components or variables).
-- Panels: no images, sliders or free layout inside a panel.
+- Panels: no images or free layout inside a panel.
 - Data in the document: plugins keep data on layers (pages included) with `node.set {props:
   {pluginData: {key: value}}}` (a `null` value removes a key) and read it back with `node.get`, which
   reports `pluginData: {key: value}` (values as strings) when a layer has any; there is no separate

docs/roadmap.md

@@ -1,6 +1,6 @@
 # FigCraft roadmap: milestones and what's next
 
-> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-30 · **Change:** minor (compact layer trees with fields and outline (M0.9, part of #996); while a drag only moves a large selection, its outlines, box, slots, spacing and Design panel values are worked out once and shifted, not rebuilt on every move (#1571); Shift+Cmd/Ctrl+Enter on a selected board shape adds the next shape already joined to it, and goes on typing (#1597); an imported or pasted file finds an installed family under the other names its fonts give it, and with other case and spacing, instead of reporting it missing (#1292); a panic in a grouped closure outside any command rolls the group back like a failed group: documents, selection, undo and redo, history limit and journal as before (#1085); a development example generates figcraft-cli's shell completions and man pages from its clap definitions (part of #1396); `.fig` ZIP image reads share a total byte budget and count skipped images in the import warnings (#1076); compact layer trees with fields and outline (M0.9, part of #996); stored variable and collection references keep their identity when another object is named like their id (follow-up to #1542); every file a command reads whole by path is a regular file within a cap that fits it: documents 16 GiB, placed images 256 MiB, CLI scripts 1 GiB; a component set's property rows fit the 240 px right panel: variant values wrap two to a line there and every + and − stays in view; the server key is checked by comparing SHA-256 hashes of the presented and the kept key, as the deployment guide says (#1130); opening a file contacts no team library server it names until you check it (#1097); a hostile server can no longer grow a client's memory with made-up people, and a session remembers a bounded number of deleted layer ids (#1121); `doc.list` gives AI agents and plugins the open files' names, not their paths (#1117); with a large selection, frames where nothing changed reuse the selection's outlines, box and slots and the Design panel's instance and position values instead of working them out again (#1571); team libraries and plugins larger than the 16 MiB download burst can be downloaded again, more slowly (#1089); a batch keeps one undo snapshot, not one per step (#1099); files nested 256 levels deep import on the browser's 1 MB stack (#1101); SVG and PDF exports count pattern sources and the renders they embed from the layer's depth, so one cap bounds a whole export (#1082); an explicit variables file path (`variable.import`, the `variables` of `file.open` and `file.import`) is refused past 256 MiB or when it isn't a regular file, as the sibling `variables.json` already was (part of #1114); joining and leaving a file nobody is editing reads and writes nothing on the server: it stays loaded a minute after everyone leaves (#1074); opening a `.figcraft` file unpacks at most 6 GiB in all (2 GiB in the browser), every area together (#1079); hovering the canvas hit-tests once per pointer move, not on every frame, and moving an auto layout frame no longer lays out its contents again on every move (#1571); `.fig` instance expansion no longer walks variable nodes for every instance or copies every outer override row into each nested instance (#1077); `comment.people` lists names that were only @mentioned, and `comment.next` and `comment.prompt` carry the mentions too (#1415); grid auto-placement looks for free cells a 64-bit word at a time and skips what blocks it, with the same placements (#1083); with the pen out, Enter or a double-click ends the path and edits the vector with the Move tool instead of drawing on (#1430); a recovery copy made while a version is previewed holds the file, not the version shown; a FigJam `.jam` file opens as a board (#1342); the Actions palette offers only commands that run from it, and no second row reading like a menu item: Place image opens the file dialog (#1574); share links can comment: a third access level beside edit and view, whose holder sees the file live and adds, replies to, reacts to and resolves comments but can't change the design; Preferences ▸ Scroll wheel zoom: a mouse wheel zooms the canvas about the pointer and Cmd/Ctrl+wheel scrolls (#1390); `comment.list {mentions}` lists only the threads that @mention a name (#1415); in the browser an internal error that stops the page keeps its unsaved files, which open again on reload (#1123); boolean operations refuse input past their caps, and a boolean group past them draws without its result (#1104); figcraft-cli parses its arguments with clap, following RFC-0012 (#1396); the selection and hover outlines of rounded rectangles and frames follow their corners (#1506); component properties keep the order they were made in when one is renamed, and Make slot asks for the slot's name first (#1536, #1537); the browser build publishes files to a server, so Share ▸ Online and Publish to server work there (#917); the browser build uses the fonts insLine truncated
+> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-30 · **Change:** minor (every file a command reads whole by path is a regular file within a cap that fits it: documents 16 GiB, placed images 256 MiB, CLI scripts 1 GiB; compact layer trees with fields and outline (M0.9, part of #996); while a drag only moves a large selection, its outlines, box, slots, spacing and Design panel values are worked out once and shifted, not rebuilt on every move (#1571); Shift+Cmd/Ctrl+Enter on a selected board shape adds the next shape already joined to it, and goes on typing (#1597); an imported or pasted file finds an installed family under the other names its fonts give it, and with other case and spacing, instead of reporting it missing (#1292); a panic in a grouped closure outside any command rolls the group back like a failed group: documents, selection, undo and redo, history limit and journal as before (#1085); a development example generates figcraft-cli's shell completions and man pages from its clap definitions (part of #1396); `.fig` ZIP image reads share a total byte budget and count skipped images in the import warnings (#1076); compact layer trees with fields and outline (M0.9, part of #996); stored variable and collection references keep their identity when another object is named like their id (follow-up to #1542); every file a command reads whole by path is a regular file within a cap that fits it: documents 16 GiB, placed images 256 MiB, CLI scripts 1 GiB; a component set's property rows fit the 240 px right panel: variant values wrap two to a line there and every + and − stays in view; the server key is checked by comparing SHA-256 hashes of the presented and the kept key, as the deployment guide says (#1130); opening a file contacts no team library server it names until you check it (#1097); a hostile server can no longer grow a client's memory with made-up people, and a session remembers a bounded number of deleted layer ids (#1121); `doc.list` gives AI agents and plugins the open files' names, not their paths (#1117); with a large selection, frames where nothing changed reuse the selection's outlines, box and slots and the Design panel's instance and position values instead of working them out again (#1571); team libraries and plugins larger than the 16 MiB download burst can be downloaded again, more slowly (#1089); a batch keeps one undo snapshot, not one per step (#1099); files nested 256 levels deep import on the browser's 1 MB stack (#1101); SVG and PDF exports count pattern sources and the renders they embed from the layer's depth, so one cap bounds a whole export (#1082); an explicit variables file path (`variable.import`, the `variables` of `file.open` and `file.import`) is refused past 256 MiB or when it isn't a regular file, as the sibling `variables.json` already was (part of #1114); joining and leaving a file nobody is editing reads and writes nothing on the server: it stays loaded a minute after everyone leaves (#1074); opening a `.figcraft` file unpacks at most 6 GiB in all (2 GiB in the browser), every area together (#1079); hovering the canvas hit-tests once per pointer move, not on every frame, and moving an auto layout frame no longer lays out its contents again on every move (#1571); `.fig` instance expansion no longer walks variable nodes for every instance or copies every outer override row into each nested instance (#1077); `comment.people` lists names that were only @mentioned, and `comment.next` and `comment.prompt` carry the mentions too (#1415); grid auto-placement looks for free cells a 64-bit word at a time and skips what blocks it, with the same placements (#1083); with the pen out, Enter or a double-click ends the path and edits the vector with the Move tool instead of drawing on (#1430); a recovery copy made while a version is previewed holds the file, not the version shown; a FigJam `.jam` file opens as a board (#1342); the Actions palette offers only commands that run from it, and no second row reading like a menu item: Place image opens the file dialog (#1574); share links can comment: a third access level beside edit and view, whose holder sees the file live and adds, replies to, reacts to and resolves comments but can't change the design; Preferences ▸ Scroll wheel zoom: a mouse wheel zooms the canvas about the pointer and Cmd/Ctrl+wheel scrolls (#1390); `comment.list {mentions}` lists only the threads that @mention a name (#1415); in the browser an internal error that stops the page keeps its unsaved files, which open again on reload (#1123); boolean operations refuse input past their caps, and a boolean group past them draws without its result (#1104); figcraft-cli parses its arguments with clap, following RFC-0012 (#1396); the selection and hover outlines of rounded rectangles and frames follow their corners (#1506); component properties keep the order they were made in when one is renamed, and Make slot asks for the slot's name first (#1536, #1537)Line truncated
 
 Forward-looking plan. Where FigCraft stands today: [`ROADMAP.md`](../ROADMAP.md) and
 [`target-app-parity.md`](target-app-parity.md); the full ranked list: [`gaps.md`](gaps.md). Hours
@@ -76,6 +76,7 @@ blockers.
 
 | Date | Change | Summary |
 |---|---|---|
+| 2026-10-30 | minor | M6, gap 6: a `slider` control for plugin panels and command forms (a number between required `min` and `max`; one callback when a drag ends). Tests: `v2_tests`, `plugin_panel_tests` |
 | 2026-10-30 | minor | M6, gap 16: `figcraft-cli connect publish` publishes a repository's code connect mappings to a `.figcraft` file (`--dry-run`). Tests: `files::tests`, `args` tests |
 | 2026-10-30 | minor | M8, #1571 (part 3): the first frame after each move of a drag rebuilt the selection's outlines and box, its slots, the selection spacing and the Design panel's values from the new document. Now the engine notes when a drag has only moved the selected layers, each by the same offset from where it started (`Interaction::moved_by`: not for a layer in an auto layout flow, nor an Alt copy), and the canvas and panel work those out once from the document the drag started from and shift what depends on position (the outlines on screen, the box); the Design panel shows that document's values, all but the position fields, which follow the move. The Export section's values are kept too. Nothing looks different. Dragging 648 of about 1,900 synthetic layers (release build, two runs each): the UI pass 2.10 to 1.44 ms a frame, CPU 135% to 117% of a core; the Design panel 0.9 to 0.5 ms, the overlays 0.5 to 0.3 ms. Not yet: the engine's preview of each move (copying and normalising the document) and the canvas texture's whole upload. Tests: `moved_by_tests.rs`, `canvas/selection_cache_tests.rs`. |
 | 2026-10-30 | minor | M12, #1597: Shift+Cmd/Ctrl+Enter on a board shape adds the next shape already connected (stickies unchanged). Tests: `board_connected_tests`, `board_ui_tests` |