chore(badge): adjust badge icon sizing constants

The badge icon rendering was tweaked by slightly reducing the
radius and scale constants. This helps align the icon proportions
and spacing for a cleaner visual result.

src-tauri/src/badge.rs

@@ -98,8 +98,8 @@ fn render_badge_icon(ahead: u32, behind: u32) -> Option<Image<'static>> {
     }
 
     const SIZE: usize = 64;
-    const RADIUS: f32 = 27.0;
-    const SCALE: usize = 6;
+    const RADIUS: f32 = 26.0;
+    const SCALE: usize = 5;
     const MARGIN: f32 = 2.0;
     let mut rgba = vec![0u8; SIZE * SIZE * 4];