refactor(ui): centralize muted_style in style::common

Delete the byte-identical 0.68 muted_style copies across 13 window modules and import crate::ui::style::common::muted_style instead. print_all keeps its local name via muted_style as muted so call sites are untouched. Divergent alphas (0.60/0.62/0.65/0.72) and missing_fonts weak.text left alone to avoid visual changes. Net: +13 / -78, no visual change. Verified: cargo check --all-targets clean, cargo test --lib ui::style (3 passed).

src/ui/window/layers.rs

@@ -2,6 +2,7 @@
 
 use crate::app::Message;
 use crate::ui::properties::{lw_options, LinetypeItem, LwItem};
+use crate::ui::style::common::muted_style;
 use crate::ui::ROW_H;
 use acadrust::tables::layer::Layer as DocLayer;
 use acadrust::tables::Table;
@@ -51,12 +52,6 @@ const LINETYPE_MENU_W: f32 = 220.0;
 /// scrolled into view after it is added (#271).
 pub const LAYER_TABLE_SCROLL_ID: &str = "layer-manager-table-scroll";
 
-fn muted_style(theme: &Theme) -> iced::widget::text::Style {
-    iced::widget::text::Style {
-        color: Some(theme.palette().background.base.text.scale_alpha(0.68)),
-    }
-}
-
 fn table_input_style(
     theme: &Theme,
     status: iced::widget::text_input::Status,