first commit

src/modules/manage/mod.rs

@@ -0,0 +1,23 @@
+// Manage module — application settings and customization tools.
+
+mod options;
+
+use crate::modules::{CadModule, RibbonGroup};
+
+pub struct ManageModule;
+
+impl CadModule for ManageModule {
+    fn id(&self) -> &'static str {
+        "manage"
+    }
+    fn title(&self) -> &'static str {
+        "Manage"
+    }
+
+    fn ribbon_groups(&self) -> Vec<RibbonGroup> {
+        vec![RibbonGroup {
+            title: "Settings",
+            tools: vec![options::tool().into()],
+        }]
+    }
+}