feat(styles): mark the current style with a ✓ in the list

Every style manager now shows a leading ✓ next to the current style
(current text/dim style, active table/multileader/multiline style), with
the other rows padded so names stay aligned. The marker replaces the
multileader/multiline-only ◀ and is wired for all five managers by
threading the current-style name into each view.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

src/app/view.rs

@@ -75,6 +75,7 @@ impl OpenCADStudio {
             return crate::ui::textstyle::view_window(crate::ui::textstyle::TextStyleView {
                 styles,
                 selected: &self.textstyle_selected,
+                current: &tab.scene.document.header.current_text_style_name,
                 font_buf: &self.textstyle_font,
                 width_buf: &self.textstyle_width,
                 oblique_buf: &self.textstyle_oblique,
@@ -118,6 +119,7 @@ impl OpenCADStudio {
             return crate::ui::tablestyle::view_window(
                 styles,
                 &self.tablestyle_selected,
+                &self.ribbon.active_table_style,
                 selected_style,
                 &self.ts_hmargin,
                 &self.ts_vmargin,
@@ -369,6 +371,11 @@ impl OpenCADStudio {
             return crate::ui::dimstyle::view_window(
                 styles,
                 &self.dimstyle_selected,
+                &self.tabs[self.active_tab]
+                    .scene
+                    .document
+                    .header
+                    .current_dimstyle_name,
                 self.dimstyle_tab,
                 crate::ui::dimstyle::DimStyleValues {
                     dimdle: &self.ds_dimdle,

src/ui/dimstyle.rs

@@ -184,6 +184,7 @@ fn hdivider<'a>() -> Element<'a, Message> {
 pub fn view_window<'a>(
     styles: Vec<String>,
     selected: &'a str,
+    current: &'a str,
     tab: u8,
     vals: DimStyleValues<'a>,
     rename_active: Option<&'a str>,
@@ -724,7 +725,7 @@ pub fn view_window<'a>(
         kind: crate::app::StyleKind::Dim,
         styles: &styles,
         selected,
-        current: None,
+        current: Some(current),
         rename_active,
         rename_buf,
         on_new: Message::DimStyleDialogNew,

src/ui/style_manager.rs

@@ -114,10 +114,12 @@ pub fn view<'a, 'b>(s: Scaffold<'a, 'b>) -> Element<'a, Message> {
         .iter()
         .map(|name| {
             let is_sel = name.as_str() == s.selected;
+            // Mark the current style with a leading ✓; pad the rest so names
+            // line up.
             let label = if s.current == Some(name.as_str()) {
-                format!("{name} ◀")
+                format!("✓ {name}")
             } else {
-                name.clone()
+                format!("    {name}")
             };
             crate::ui::style_list::item(
                 name,

src/ui/tablestyle.rs

@@ -67,6 +67,7 @@ fn btn_s(accent: bool) -> impl Fn(&Theme, button::Status) -> button::Style {
 pub fn view_window<'a>(
     styles: Vec<String>,
     selected: &'a str,
+    current: &'a str,
     selected_style: Option<&'a acadrust::objects::TableStyle>,
     hmargin_buf: &'a str,
     vmargin_buf: &'a str,
@@ -356,7 +357,7 @@ pub fn view_window<'a>(
         kind: crate::app::StyleKind::Table,
         styles: &styles,
         selected,
-        current: None,
+        current: Some(current),
         rename_active,
         rename_buf,
         on_new: Message::TableStyleDialogNew,

src/ui/textstyle.rs

@@ -9,6 +9,8 @@ use iced::{Background, Border, Color, Element, Fill, Theme};
 pub struct TextStyleView<'a> {
     pub styles: Vec<String>,
     pub selected: &'a str,
+    /// Name of the current text style (marked with ✓ in the list).
+    pub current: &'a str,
     pub font_buf: &'a str,
     pub width_buf: &'a str,
     pub oblique_buf: &'a str,
@@ -120,6 +122,7 @@ pub fn view_window<'a>(v: TextStyleView<'a>) -> Element<'a, Message> {
     let TextStyleView {
         styles,
         selected,
+        current,
         font_buf,
         width_buf,
         oblique_buf,
@@ -258,7 +261,7 @@ pub fn view_window<'a>(v: TextStyleView<'a>) -> Element<'a, Message> {
         kind: StyleKind::Text,
         styles: &styles,
         selected,
-        current: None,
+        current: Some(current),
         rename_active,
         rename_buf,
         on_new: Message::TextStyleDialogNew,