fix: apply designer agent improvements to src/App.tsx

src/App.tsx

@@ -7,9 +7,13 @@ import Gallery from './components/Gallery';
 import Events from './components/Events';
 import Contact from './components/Contact';
 import Footer from './components/Footer';
+import Musee from './components/Musee';
+
+type Page = 'home' | 'musee';
 
 function App() {
   const [scrolled, setScrolled] = useState(false);
+  const [currentPage, setCurrentPage] = useState<Page>('home');
 
   useEffect(() => {
     const handleScroll = () => setScrolled(window.scrollY > 60);
@@ -17,19 +21,55 @@ function App() {
     return () => window.removeEventListener('scroll', handleScroll);
   }, []);
 
+  // Simple hash-based routing
+  useEffect(() => {
+    const checkRoute = () => {
+      if (window.location.hash === '#musee-page') {
+        setCurrentPage('musee');
+        window.scrollTo(0, 0);
+      } else {
+        setCurrentPage('home');
+      }
+    };
+    checkRoute();
+    window.addEventListener('hashchange', checkRoute);
+    return () => window.removeEventListener('hashchange', checkRoute);
+  }, []);
+
+  const navigateTo = (page: Page) => {
+    setCurrentPage(page);
+    window.scrollTo({ top: 0, behavior: 'smooth' });
+    if (page === 'musee') {
+      window.history.pushState(null, '', '#musee-page');
+    } else {
+      window.history.pushState(null, '', '/');
+    }
+  };
+
   return (
+    <>
+      <a href="#main-content" className="skip-link">
+        Aller au contenu principal
+      </a>
       <div className="min-h-screen">
-      <Header scrolled={scrolled} />
-      <main>
+        <Header scrolled={scrolled} currentPage={currentPage} navigateTo={navigateTo} />
+        <main id="main-content" tabIndex={-1}>
+          {currentPage === 'musee' ? (
+            <Musee navigateTo={navigateTo} />
+          ) : (
+            <>
               <Hero />
               <About />
               <History />
-        <Gallery />
+              <Gallery navigateTo={navigateTo} />
               <Events />
               <Contact />
+            </>
+          )}
         </main>
-      <Footer />
+        <Footer navigateTo={navigateTo} />
       </div>
+    </>
   );
 }