feat(front) : modular nuxt config with app/ shell dirs and modules/* layer auto-detection

frontend/app/middleware/auth.global.ts

@@ -0,0 +1,16 @@
+export default defineNuxtRouteMiddleware(async (to) => {
+    const auth = useAuthStore()
+    const isLogin = to.path === '/login'
+
+    if (!auth.checked) {
+        await auth.ensureSession()
+    }
+
+    if (!isLogin && !auth.isAuthenticated) {
+        return navigateTo('/login')
+    }
+
+    if (isLogin && auth.isAuthenticated) {
+        return navigateTo('/')
+    }
+})