Enhance authentication flow: Add authentication-based buttons in AppNavigation for logged-in users, improve member status checks in useAuth, and update join page to automatically redirect to the dashboard after registration. Adjust cookie settings for better development experience.

server/api/auth/member.get.js

@@ -6,8 +6,10 @@ export default defineEventHandler(async (event) => {
   await connectDB()
   
   const token = getCookie(event, 'auth-token')
+  console.log('Auth check - token found:', !!token)
   
   if (!token) {
+    console.log('No auth token found in cookies')
     throw createError({ 
       statusCode: 401, 
       statusMessage: 'Not authenticated'