Harden parametric sketch constraints

src/app/config.rs

@@ -435,25 +435,10 @@ pub struct StartConfig {
     pub section: super::StartSection,
 }
 
-#[derive(Clone, PartialEq, Serialize, Deserialize)]
+#[derive(Clone, PartialEq, Serialize, Deserialize, Default)]
 #[serde(default)]
 pub struct RibbonConfig {
     pub collapse: CollapseMode,
-    /// Font size (px) of the caption under a large ribbon button's icon.
-    pub label_font_size: i32,
-    /// Font size (px) of a panel's own title ("Draw", "Modify", "Layers", …)
-    /// shown beneath its tools.
-    pub group_title_font_size: i32,
-}
-
-impl Default for RibbonConfig {
-    fn default() -> Self {
-        Self {
-            collapse: CollapseMode::default(),
-            label_font_size: 10,
-            group_title_font_size: 9,
-        }
-    }
 }
 
 impl AppConfig {