feat: refine responsive sidebar behavior with auto-collapse

frontend/src/components/layout/protected.rs

@@ -3,11 +3,38 @@ use crate::components::layout::sidebar::Sidebar;
 use crate::components::layout::toolbar::Toolbar;
 use crate::components::layout::footer::Footer;
 use crate::components::ui::sidenav::{SidenavWrapper, Sidenav, SidenavInset};
+use wasm_bindgen::JsCast;
 
 #[component]
-pub fn Protected(children: Children) -> impl IntoView {
     let (collapsed, set_collapsed) = signal(false);
 
+    // Responsive Sidebar Logic
+    Effect::new(move |_| {
+        let window = web_sys::window().expect("window missing");
+        
+        // Initial check
+        let width = window.inner_width().unwrap().as_f64().unwrap_or(1920.0);
+        if width < 1280.0 {
+            set_collapsed.set(true);
+        } else {
+            set_collapsed.set(false);
+        }
+
+        // Listener
+        let closure = wasm_bindgen::closure::Closure::<dyn FnMut(_)>::new(move |_: web_sys::Event| {
+            let window = web_sys::window().expect("window missing");
+            let width = window.inner_width().unwrap().as_f64().unwrap_or(1920.0);
+            if width < 1280.0 {
+                set_collapsed.set(true);
+            } else {
+                set_collapsed.set(false);
+            }
+        });
+        
+        let _ = window.add_event_listener_with_callback("resize", closure.as_ref().unchecked_ref());
+        closure.forget(); // Leak memory intentionally for global listener (or store in a cleanup handle if needed, but for layout component it's fine)
+    });
+
     view! {
         <SidenavWrapper attr:style="--sidenav-width:16rem; --sidenav-width-icon:3rem;">
             // Masaüstü Sidenav