Graphic Attributes: quieter swatches, Enter in linetype scale, undo names

- Colour swatches carry no *VARIES* or ByBlock text; the L / B / C / V
  button already shows that.
- A separator sits between "Create Layer with active settings" and the
  "Create fills on the current layer" checkbox.
- The linetype scale field is a plain text field like the Properties
  panel: the first click selects its value, Enter applies it (decimal
  comma and expressions accepted) instead of repeating the last command.
  This drops the iced_aw number_input feature again.
- Undo/redo name fill changes "Fill change" and linetype changes
  "Linetype", in all 21 locales.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01VgkJN8DEojuPTumAXLHotu

src/app/update/mod.rs

@@ -6887,13 +6887,28 @@ impl OpenCADStudio {
             Message::PropAttrCommit(tag) => self.on_prop_attr_commit(tag),
 
             Message::PropPointerPressed => {
-                if !self.dock_panel_visible(crate::ui::dock::PanelId::Properties) {
+                if !self.dock_panel_visible(crate::ui::dock::PanelId::Properties)
+                    && !self.dock_panel_visible(crate::ui::dock::PanelId::GraphicAttributes)
+                {
                     return Task::none();
                 }
                 crate::ui::properties::sync_active_field_task()
             }
 
             Message::PropSyncActive(focused) => {
+                // The Graphic Attributes linetype scale field behaves like a
+                // Properties field: the first click selects its value.
+                let scale_field = iced::widget::Id::new(
+                    crate::ui::window::graphic_attributes::LINETYPE_SCALE_FIELD,
+                );
+                if focused.as_ref() == Some(&scale_field) {
+                    if !std::mem::replace(&mut self.graphic_attributes.linetype_scale_focused, true) {
+                        return iced::widget::operation::select_all(scale_field);
+                    }
+                    return Task::none();
+                }
+                self.graphic_attributes.linetype_scale_focused = false;
+                self.graphic_attributes.linetype_scale_input = None;
                 let panel = &mut self.tabs[self.active_tab].properties;
                 if let Some(id) = focused.as_ref() {
                     if let Some(key) = panel.prop_field_key_for_id(id) {