Renewal reminders in sticky banners

Renewal warnings are now displayed in a sticky banner at the top of hPanel pages, including the homepage, so you see them wherever you navigate. Red banners indicate something has already expired and needs immediate action, while yellow banners warn of upcoming expirations. Only the most critical message appears at a time, and you can dismiss it for your current session without it returning until you log back in. This makes it much harder to miss important renewal deadlines.