feat(auth): enhance logout and login flow with return URL handling

frontend/src/stores/authStore.js

@@ -72,7 +72,7 @@ export const useAuthStore = defineStore(
             // Clear any other auth-related data if needed
         }
 
-        async function logout() {
+        async function logout(redirectTo = '/landing') {
             try {
                 // Optionally call logout endpoint if you have one
                 // await clientApi.post('api/users/logout');
@@ -80,7 +80,7 @@ export const useAuthStore = defineStore(
                 console.error('Logout failed:', error);
             } finally {
                 cleanTokens();
-                await router.push('/');
+                await router.push(redirectTo);
             }
         }
 
@@ -201,8 +201,15 @@ export const useAuthStore = defineStore(
                     // Only clear tokens and session storage after a failed refresh attempt
                     cleanTokens();
                     
-                    // Force a redirect to the login page
-                    await router.push('/login');
+                    // Get the current route to use as returnUrl
+                    const currentRoute = router.currentRoute.value;
+                    const returnUrl = currentRoute.fullPath;
+                    
+                    // Force a redirect to the login page with returnUrl
+                    await router.push({
+                        name: 'login',
+                        query: { returnUrl }
+                    });
                     
                     throw error;
                 }