centralized general movement

client/src/pages/intro/state.rs

@@ -1,4 +1,5 @@
 // src/state/pages/intro.rs
+use crate::movement::MovementAction;
 
 #[derive(Default, Clone, Debug)]
 pub struct IntroState {
@@ -23,3 +24,25 @@ impl IntroState {
     }
 }
 
+impl IntroState {
+    pub fn handle_movement(&mut self, action: MovementAction) -> bool {
+        match action {
+            MovementAction::Next | MovementAction::Right | MovementAction::Down => {
+                self.next_option();
+                true
+            }
+            MovementAction::Previous | MovementAction::Left | MovementAction::Up => {
+                self.previous_option();
+                true
+            }
+            MovementAction::Select => {
+                // Actual selection handled in event loop (UiContext::Intro)
+                true
+            }
+            MovementAction::Esc => {
+                // Nothing special for Intro, but could be used to quit
+                true
+            }
+        }
+    }
+}