first commit

src/modules/view/solid.rs

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+// Solid (Shaded) visual style toggle.
+// id "SOLID" is special-cased in ribbon.rs for active-state highlighting.
+
+use crate::modules::{IconKind, ModuleEvent, ToolDef};
+pub fn tool() -> ToolDef {
+    ToolDef {
+        id: "SOLID",
+        label: "Solid",
+        icon: IconKind::Glyph("■"),
+        event: ModuleEvent::SetWireframe(false),
+    }
+}