Merge main into Pallet-placement

Resolved conflicts:
- app/update/mod.rs: keep the dock's dock_open_at_default for the XREF
  manager; take main's stable xref row identity (row_index(&id)).
- app/view/mod.rs: keep the edge layout from app::dock; drop main's copy
  of the old edge-stack code (main only reformatted it there).
- ui/window/layers.rs: keep main's new visible_indices next to the
  branch's view_panel.
Files the branch only reformatted take main's version. Adds the Lao
(lo-LA) translations for the new dock texts.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_013RyGiMXcsf9HTKfqDxaQGt

src/ui/window/layer_state_manager.rs

@@ -105,13 +105,17 @@ pub fn view_window<'a>(
             .iter()
             .find(|state| state.name.eq_ignore_ascii_case(selected))
     });
-    let query = filter.trim().to_lowercase();
+    let query: Cow<str> = if filter.trim().is_empty() {
+        Cow::Borrowed("")
+    } else {
+        Cow::Owned(filter.trim().to_lowercase())
+    };
     let rows: Vec<Element<'_, Message>> = states
         .iter()
         .filter(|state| {
             query.is_empty()
-                || state.name.to_lowercase().contains(&query)
-                || state.description.to_lowercase().contains(&query)
+                || state.name.to_lowercase().contains(query.as_ref())
+                || state.description.to_lowercase().contains(query.as_ref())
         })
         .map(|state| {
             let is_selected =
@@ -424,7 +428,7 @@ fn editor_layer_row<'a>(
     index: usize,
     layer: &'a codec::LayerStateLayer,
     color_open: bool,
-    linetypes: Vec<String>,
+    linetypes: std::sync::Arc<[String]>,
 ) -> Element<'a, Message> {
     let current_linetype = Some(layer.line_type.clone());
     let current_lineweight = Some(LwItem(layer.line_weight));
@@ -501,7 +505,7 @@ pub fn view_editor<'a>(
     state: &'a LayerState,
     filter: &'a str,
     color_open: Option<usize>,
-    linetypes: Vec<String>,
+    linetypes: std::sync::Arc<[String]>,
     sizing: crate::ui::modal::ModalSizing,
 ) -> Element<'a, Message> {
     let properties = [
@@ -527,18 +531,24 @@ pub fn view_editor<'a>(
         .iter()
         .map(|layer| layer.layer_name.clone())
         .collect();
-    let query = filter.trim().to_lowercase();
+    let query: Cow<str> = if filter.trim().is_empty() {
+        Cow::Borrowed("")
+    } else {
+        Cow::Owned(filter.trim().to_lowercase())
+    };
     let rows = state
         .layers
         .iter()
         .enumerate()
-        .filter(|(_, layer)| query.is_empty() || layer.layer_name.to_lowercase().contains(&query))
+        .filter(|(_, layer)| {
+            query.is_empty() || layer.layer_name.to_lowercase().contains(query.as_ref())
+        })
         .fold(column![].spacing(0), |rows, (index, layer)| {
             rows.push(editor_layer_row(
                 index,
                 layer,
                 color_open == Some(index),
-                linetypes.clone(),
+                std::sync::Arc::clone(&linetypes),
             ))
         });
 
@@ -632,3 +642,33 @@ pub fn view_editor<'a>(
     .height(sizing.height)
     .into()
 }
+
+#[cfg(test)]
+mod borrowed_linetypes_tests {
+    // #21 RED: view_editor must take shared ownership of the linetype list
+    // (a borrow cannot cross the twice-per-frame build closure) instead of
+    // cloning per row — this call fails to compile until the signatures take
+    // Arc<[String]>.
+    use super::view_editor;
+
+    #[test]
+    fn view_editor_accepts_shared_linetypes() {
+        let state = codec::LayerState {
+            name: String::new(),
+            description: String::new(),
+            mask: codec::LayerStateMask::default(),
+            hidden: false,
+            current_layer: String::new(),
+            layers: Vec::new(),
+        };
+        let linetypes: std::sync::Arc<[String]> =
+            std::sync::Arc::from(vec!["Continuous".to_string()]);
+        let sizing = crate::ui::modal::ModalSizing {
+            width: iced::Length::Fixed(1180.0),
+            height: iced::Length::Fixed(560.0),
+        };
+        let _ = view_editor(&state, "", None, std::sync::Arc::clone(&linetypes), sizing);
+        // Shared ownership: the source stays usable after the call.
+        assert_eq!(linetypes.len(), 1);
+    }
+}

src/ui/window/layers.rs

@@ -127,11 +127,15 @@ pub struct LayerPanel {
     /// All selected rows (Ctrl/Shift extend it). Bulk property changes and
     /// deletion act on every row here. Empty ⇔ nothing selected.
     pub selected_multi: Vec<usize>,
-    pub editing: Option<usize>,
+    /// Layer being renamed (row text-input open). Keyed by NAME so a
+    /// rebuild/sort between start and commit cannot retarget it (#44);
+    /// `selected`/`selected_multi` below stay index-based and are re-resolved.
+    pub editing: Option<String>,
     pub edit_buf: String,
     pub current_layer: String,
     pub linetype_items: Vec<LinetypeItem>,
-    pub color_picker_row: Option<usize>,
+    /// Row whose color swatch is open. Name-keyed for the same reason (#44).
+    pub color_picker_row: Option<String>,
     pub color_full_palette: bool,
     pub linetype_combo: combo_box::State<LinetypeItem>,
     pub lw_combo: combo_box::State<LwItem>,
@@ -320,6 +324,19 @@ impl LayerPanel {
         self.linetype_items = items;
     }
 
+    /// Row indices passing the live name filter — the rows the view actually
+    /// draws. Index math over "what the user sees" (shift-ranges) must use
+    /// these; raw `selected_multi` ranges would sweep in hidden rows (#50).
+    pub fn visible_indices(&self) -> Vec<usize> {
+        let filter = self.filter.to_lowercase();
+        self.layers
+            .iter()
+            .enumerate()
+            .filter(|(_, layer)| filter.is_empty() || layer.name.to_lowercase().contains(&filter))
+            .map(|(i, _)| i)
+            .collect()
+    }
+
     /// The Layer Manager as a dock pallet: its title bar, the toolbar across
     /// the pallet (search box on the right), then the table, at least as wide
     /// as the pallet and scrolling sideways when the pallet is narrower.
@@ -505,18 +522,15 @@ impl LayerPanel {
 
         // ── Layer rows ────────────────────────────────────────────────────
         let mut rows_col = column![].spacing(0);
-        let filter = self.filter.to_lowercase();
-        for (i, layer) in self.layers.iter().enumerate() {
-            if !filter.is_empty() && !layer.name.to_lowercase().contains(&filter) {
-                continue;
-            }
+        for i in self.visible_indices() {
+            let layer = &self.layers[i];
             // Highlight every selected row; show the editable combos only on the
             // anchor (a single shared combo state can't drive several rows).
             let is_anchor = self.selected == Some(i);
             let is_sel = is_anchor || self.selected_multi.contains(&i);
             let is_current = layer.name == self.current_layer;
-            let is_editing = self.editing == Some(i);
-            let color_open = self.color_picker_row == Some(i);
+            let is_editing = self.editing.as_deref() == Some(layer.name.as_str());
+            let color_open = self.color_picker_row.as_deref() == Some(layer.name.as_str());
 
             let (ltc, lwc) = if is_anchor {
                 (Some(&self.linetype_combo), Some(&self.lw_combo))
@@ -962,7 +976,7 @@ fn layer_row<'a>(
     // Per-viewport freeze columns
     for (vp_idx, _vp_col) in vp_cols.iter().enumerate() {
         let is_vp_frozen = layer.vp_frozen.get(vp_idx).copied().unwrap_or(false);
-        let vp_frz_svg = crate::ui::icons::layer_freeze(is_vp_frozen);
+        let vp_frz_svg = crate::ui::icons::layer_vp_freeze(is_vp_frozen);
         row_content = row_content.push(
             container(svg_btn(
                 vp_frz_svg,

src/ui/window/options.rs

@@ -55,6 +55,10 @@ pub struct AppPrefs {
     pub commandline_fade_ms: i32,
     /// ZOOMWHEEL: reverse the mouse-wheel zoom direction.
     pub zoom_wheel_reversed: bool,
+    /// Scroll pans and Ctrl+scroll zooms (touchpads).
+    pub touchpad_pan: bool,
+    /// Interface scale in percent.
+    pub ui_scale_percent: u16,
     /// ZOOMFACTOR. The slider sets the range the system variable has; the
     /// field beside it reaches `settings::ZOOM_FACTOR_MAX`.
     pub zoom_factor: i32,
@@ -694,6 +698,25 @@ pub fn view_window<'a>(
             .width(sizing.width),
         Space::new().height(12),
         color_controls,
+        Space::new().height(16),
+        // A list, not a slider: the dialog rescales under the cursor as the
+        // value changes, which would drag a slider along with it.
+        row![
+            text(crate::t!("Interface scale")).size(12).width(150),
+            iced::widget::pick_list(
+                Some(format!("{}%", prefs.ui_scale_percent)),
+                [75u16, 100, 125, 150, 175, 200]
+                    .map(|p| format!("{p}%"))
+                    .to_vec(),
+                |label: &String| label.clone(),
+            )
+            .on_select(|label: String| {
+                Message::UiScaleChanged(label.trim_end_matches('%').parse().unwrap_or(100))
+            })
+            .width(sizing.width),
+        ]
+        .spacing(12)
+        .align_y(iced::Center),
         Space::new().height(24),
         row![
             text(crate::t!("Model Space Appearance")).size(15),
@@ -1264,6 +1287,15 @@ pub fn view_window<'a>(
         ]
         .spacing(8)
         .align_y(iced::Center),
+        Space::new().height(8),
+        row![
+            iced::widget::checkbox(prefs.touchpad_pan)
+                .on_toggle(Message::TouchpadPanChanged)
+                .size(15),
+            text(crate::t!("Touchpad: scroll pans, Ctrl+scroll or pinch zooms")).size(12),
+        ]
+        .spacing(8)
+        .align_y(iced::Center),
         Space::new().height(12),
         row![
             text(crate::t!("Zoom factor")).size(12).width(150),

src/ui/window/xref_manager.rs

@@ -196,6 +196,25 @@ pub enum XrefPaletteOp {
     Pathtype(Pathtype),
 }
 
+/// Stable row identity carried by row messages instead of the positional
+/// display index (#49): a rescan/reorder between view and dispatch must not
+/// retarget the row. Same `(key, saved_path)` pair `refresh` uses to preserve
+/// selection (key alone can collide across host/nested scopes).
+#[derive(Clone, Debug, PartialEq, Eq)]
+pub struct XrefRowId {
+    pub key: u64,
+    pub saved_path: String,
+}
+
+impl XrefRowId {
+    pub fn of(key: u64, saved_path: &str) -> Self {
+        Self {
+            key,
+            saved_path: saved_path.to_string(),
+        }
+    }
+}
+
 impl XrefManagerPanel {
     /// Rebuild `entries` from `doc` via [`collect_entries_with_prev`] and
     /// recompute the parent → children linkage for tree mode. Selection/anchor
@@ -310,13 +329,24 @@ impl XrefManagerPanel {
             .collect()
     }
 
+    /// Resolve a row id to its current display index (entries reorder on
+    /// every rescan). `None` = row gone meanwhile; callers no-op (#49).
+    pub fn row_index(&self, id: &XrefRowId) -> Option<usize> {
+        self.entries
+            .iter()
+            .position(|e| e.key == id.key && e.saved_path == id.saved_path)
+    }
+
     /// Click handling for row picks with normal GUI list semantics:
     /// - plain click selects exactly one row (previous selection clears);
     /// - Ctrl/Cmd-click toggles one row;
     /// - Shift-click extends a contiguous range from the anchor (or the
     ///   clicked row when there is no anchor yet).
     /// Tree mode always single-selects per spec, whatever the modifiers.
-    pub fn click_select(&mut self, index: usize, extend: SelectExtend) {
+    pub fn click_select(&mut self, id: &XrefRowId, extend: SelectExtend) {
+        let Some(index) = self.row_index(id) else {
+            return;
+        };
         if index == HOST_ROW || index >= self.entries.len() {
             return;
         }
@@ -369,19 +399,29 @@ impl XrefManagerPanel {
     /// Legacy toggle entry point: Ctrl-style toggle in list mode, single
     /// select in tree mode. Kept for tests and non-pointer callers.
     pub fn toggle_select(&mut self, index: usize) {
-        self.click_select(index, SelectExtend::Toggle);
+        let Some(id) = self
+            .entries
+            .get(index)
+            .map(|e| XrefRowId::of(e.key, &e.saved_path))
+        else {
+            return;
+        };
+        self.click_select(&id, SelectExtend::Toggle);
     }
 
     /// Right-click selection: select the row alone when it is not already
     /// selected (standard right-click behavior — the menu then acts on the
     /// selection, which now includes this row). Keeps multi-selections when
     /// right-clicking inside them.
-    pub fn right_click_select(&mut self, index: usize) {
+    pub fn right_click_select(&mut self, id: &XrefRowId) {
+        let Some(index) = self.row_index(id) else {
+            return;
+        };
         if index == HOST_ROW || index >= self.entries.len() {
             return;
         }
         if !self.selected.contains(&index) {
-            self.click_select(index, SelectExtend::Single);
+            self.click_select(id, SelectExtend::Single);
         } else {
             self.ensure_preview_for_anchor();
         }
@@ -888,12 +928,7 @@ impl XrefManagerPanel {
             container(
                 text(crate::t!("XREF  No external references in this drawing."))
                     .size(12)
-                    .color(iced::Color {
-                        r: 0.55,
-                        g: 0.55,
-                        b: 0.55,
-                        a: 1.0,
-                    }),
+                    .style(muted_style),
             )
             .center_x(Fill)
             .center_y(Fill)
@@ -1641,14 +1676,14 @@ fn menu_separator() -> Element<'static, Message> {
 /// path tools. No Bind, no Attach/Overlay — those are DWG-only and
 /// hidden entirely. Change Path Type shows a right triangle and a
 /// second list adjacent to "Change Path Type" on hover.
-fn row_menu_for(index: usize, change_path_open: bool) -> Element<'static, Message> {
+fn row_menu_for(id: XrefRowId, change_path_open: bool) -> Element<'static, Message> {
     let item = |label: &str, op: XrefPaletteOp| -> Element<'static, Message> {
-        menu_row(label.to_string(), Message::XrefRowOp(index, op))
+        menu_row(label.to_string(), Message::XrefRowOp(id.clone(), op))
     };
     let pathtype_item = |label: &str, pt: Pathtype| -> Element<'static, Message> {
         submenu_row(
             label.to_string(),
-            Message::XrefRowOp(index, XrefPaletteOp::Pathtype(pt)),
+            Message::XrefRowOp(id.clone(), XrefPaletteOp::Pathtype(pt)),
         )
     };
     let change_path_row: Element<'static, Message> = mouse_area(
@@ -1697,11 +1732,11 @@ fn row_menu_for(index: usize, change_path_open: bool) -> Element<'static, Messag
             menu_separator(),
             menu_row(
                 crate::t!("Select New Path").into_owned(),
-                Message::XrefRowPathPick(index),
+                Message::XrefRowPathPick(id.clone()),
             ),
             menu_row(
                 crate::t!("Find and Replace...").into_owned(),
-                Message::XrefRowFindReplacePrompt(index),
+                Message::XrefRowFindReplacePrompt(id.clone()),
             ),
         ]
         .spacing(MENU_SPACING)
@@ -1835,6 +1870,8 @@ fn xref_row<'a>(
     .align_y(iced::Center);
 
     let index = display.index;
+    // #49: messages carry stable identity; the index stays for zebra striping only.
+    let row_id = XrefRowId::of(entry.key, &entry.saved_path);
     let row = mouse_area(
         container(content)
             .style(move |theme: &Theme| {
@@ -1861,9 +1898,12 @@ fn xref_row<'a>(
             .height(Length::Fixed(ROW_H))
             .width(Fill),
     )
-    .on_press(Message::XrefManagerSelect(index));
-    let cm = iced_aw::ContextMenu::new(row, move || row_menu_for(index, change_path_open));
-    RightClickArea::new(cm, Message::XrefRowRightClick(index)).into()
+    .on_press(Message::XrefManagerSelect(row_id.clone()));
+    let cm = iced_aw::ContextMenu::new(row, {
+        let row_id = row_id.clone();
+        move || row_menu_for(row_id.clone(), change_path_open)
+    });
+    RightClickArea::new(cm, Message::XrefRowRightClick(row_id)).into()
 }
 
 /// One tree-mode row: indent + optional expand arrow + file icon + name.
@@ -1900,6 +1940,8 @@ fn tree_row(
     );
     cells = cells.push(text(entry.name.clone()).size(TREE_FONT_SZ));
     let index = display.index;
+    // #49: messages carry stable identity; the index stays for zebra striping only.
+    let row_id = XrefRowId::of(entry.key, &entry.saved_path);
     let row = mouse_area(
         container(cells.spacing(4).width(Fill))
             .style(move |theme: &Theme| {
@@ -1925,9 +1967,12 @@ fn tree_row(
             })
             .width(Fill),
     )
-    .on_press(Message::XrefManagerSelect(index));
-    let cm = iced_aw::ContextMenu::new(row, move || row_menu_for(index, change_path_open));
-    RightClickArea::new(cm, Message::XrefRowRightClick(index)).into()
+    .on_press(Message::XrefManagerSelect(row_id.clone()));
+    let cm = iced_aw::ContextMenu::new(row, {
+        let row_id = row_id.clone();
+        move || row_menu_for(row_id.clone(), change_path_open)
+    });
+    RightClickArea::new(cm, Message::XrefRowRightClick(row_id)).into()
 }
 
 /// Tree-mode host root: home icon + name with the current-drawing marker.
@@ -2374,6 +2419,8 @@ mod tests {
     #[test]
     fn click_select_single_then_range() {
         use super::SelectExtend;
+        use super::XrefRowId;
+        let id = |key: u64, saved: &str| XrefRowId::of(key, saved);
         let mut panel = XrefManagerPanel::default();
         panel.entries = vec![
             entry(1, "A", "a.dwg"),
@@ -2381,27 +2428,27 @@ mod tests {
             entry(3, "C", "c.dwg"),
         ];
         // Plain click selects exactly one row.
-        panel.click_select(0, SelectExtend::Single);
-        panel.click_select(2, SelectExtend::Single);
+        panel.click_select(&id(1, "a.dwg"), SelectExtend::Single);
+        panel.click_select(&id(3, "c.dwg"), SelectExtend::Single);
         assert_eq!(panel.selected, HashSet::from([2]));
         assert_eq!(panel.anchor, Some(2));
         // Shift-click extends a contiguous range from the anchor.
-        panel.click_select(2, SelectExtend::Single);
-        panel.click_select(0, SelectExtend::Range);
+        panel.click_select(&id(3, "c.dwg"), SelectExtend::Single);
+        panel.click_select(&id(1, "a.dwg"), SelectExtend::Range);
         assert_eq!(panel.selected, HashSet::from([0, 1, 2]));
         // Repeated extends keep the original anchor — rows are never lost.
         panel.entries.push(entry(4, "D", "d.dwg"));
         panel.entries.push(entry(5, "E", "e.dwg"));
-        panel.click_select(4, SelectExtend::Range);
+        panel.click_select(&id(5, "e.dwg"), SelectExtend::Range);
         assert_eq!(panel.selected, HashSet::from([2, 3, 4]));
         assert_eq!(panel.anchor, Some(2));
         // Ctrl-click toggles one row.
-        panel.click_select(3, SelectExtend::Toggle);
+        panel.click_select(&id(4, "d.dwg"), SelectExtend::Toggle);
         assert_eq!(panel.selected, HashSet::from([2, 4]));
         // Range with no anchor starts at the clicked row.
         let mut fresh = XrefManagerPanel::default();
         fresh.entries = vec![entry(1, "A", "a.dwg"), entry(2, "B", "b.dwg")];
-        fresh.click_select(1, SelectExtend::Range);
+        fresh.click_select(&id(2, "b.dwg"), SelectExtend::Range);
         assert_eq!(fresh.selected, HashSet::from([1]));
     }
 
@@ -2596,8 +2643,9 @@ mod tests {
     /// opens it with a synthetic right-click on the underlay, mirroring a
     /// user right-clicking a reference row.
     fn open_row_menu(change_path_open: bool) -> MenuSimulator {
+        let row_id = XrefRowId::of(0, "");
         let mut ui = iced_test::simulator(iced_aw::ContextMenu::new(text("anchor"), move || {
-            row_menu_for(0, change_path_open)
+            row_menu_for(row_id.clone(), change_path_open)
         }));
         let anchor = ui.find("anchor").expect("anchor underlay present");
         let center = anchor.visible_bounds().expect("anchor visible").center();
@@ -2608,11 +2656,11 @@ mod tests {
         ui
     }
 
-    fn published_ops(ui: MenuSimulator) -> Vec<(usize, XrefPaletteOp)> {
+    fn published_ops(ui: MenuSimulator) -> Vec<(XrefRowId, XrefPaletteOp)> {
         let mut ops = Vec::new();
         for message in ui.into_messages() {
-            if let Message::XrefRowOp(index, op) = message {
-                ops.push((index, op));
+            if let Message::XrefRowOp(id, op) = message {
+                ops.push((id, op));
             }
         }
         ops
@@ -2625,8 +2673,8 @@ mod tests {
         ui.click(unload.as_str())
             .expect("Unload row is clickable inside the overlay");
         assert!(
-            published_ops(ui).contains(&(0, XrefPaletteOp::Unload)),
-            "clicking Unload must publish XrefRowOp(0, Unload)"
+            published_ops(ui).contains(&(XrefRowId::of(0, ""), XrefPaletteOp::Unload)),
+            "clicking Unload must publish XrefRowOp(row, Unload)"
         );
     }
 
@@ -2662,7 +2710,10 @@ mod tests {
         ui.click(make_absolute.as_str())
             .expect("flyout row is clickable inside the overlay");
         assert!(
-            published_ops(ui).contains(&(0, XrefPaletteOp::Pathtype(Pathtype::Full))),
+            published_ops(ui).contains(&(
+                XrefRowId::of(0, ""),
+                XrefPaletteOp::Pathtype(Pathtype::Full)
+            )),
             "clicking Make Absolute must publish the Full-pathtype op"
         );
     }
@@ -2690,7 +2741,8 @@ mod tests {
         // buttons again.
         use iced_core::Widget;
 
-        let mut menu = iced_aw::ContextMenu::new(text("anchor"), || row_menu_for(0, false));
+        let mut menu =
+            iced_aw::ContextMenu::new(text("anchor"), || row_menu_for(XrefRowId::of(0, ""), false));
         let mut tree = iced_core::widget::Tree::new(
             &menu as &dyn Widget<Message, iced::Theme, iced::Renderer>,
         );