first commit

src/modules/layout/mod.rs

@@ -0,0 +1,24 @@
+// Layout module — paper space tools (viewports, scale, plot settings).
+// This tab is only shown when the active layout is not "Model".
+
+pub mod mview;
+
+use crate::modules::{CadModule, RibbonGroup};
+
+pub struct LayoutModule;
+
+impl CadModule for LayoutModule {
+    fn id(&self) -> &'static str {
+        "layout"
+    }
+    fn title(&self) -> &'static str {
+        "Layout"
+    }
+
+    fn ribbon_groups(&self) -> Vec<RibbonGroup> {
+        vec![RibbonGroup {
+            title: "Viewport",
+            tools: vec![mview::tool().into()],
+        }]
+    }
+}