feat(homepage): Nova homepage layout — guest/auth split, mascot category tiles, 5-col artwork grids

- HomeController: is_logged_in now lives inside props JSON (not separate view var)
- HomepageService: allForUser() adds user_data, fresh, suggested_creators; auth
  payload includes is_logged_in:true; guest payload merged with is_logged_in:false
- getTrending/getFreshUploads/getFollowingFeed: limit 12→10 (2 clean rows of 5)
- New getUserData() — unread messages + notifications counts via DB
- New getSuggestedCreators() — top followed-count creators not yet followed, cached 5 min

React — new components:
- HomeWelcomeRow: greeting bar with avatar, unread message/notification badges, upload CTA
- HomeFromFollowing: art grid from followed creators with empty-state
- HomeTrendingForYou: personalized grid adapts heading/link to user's top tag
- HomeBecauseYouLike: secondary personalized section keyed on top tag
- HomeSuggestedCreators: 4-col creator cards with avatar, stats, View Profile link
- HomeCTA: gradient upload banner; guest sees Create Account second CTA
- HomeCategories: 5-tile static category grid with mascot images

React — updated:
- HomePage: split into GuestHomePage + AuthHomePage; routes on is_logged_in prop
- HomeHero: isLoggedIn prop; upload href gates on auth; CTA → /discover/trending
- HomeTrending: see-all → /discover/trending; grid 4→5 cols; slice to multiple of 5
- HomeFresh: see-all → /discover/fresh; grid 4→5 cols; slice to multiple of 5
- HomeFromFollowing/TrendingForYou/BecauseYouLike: 5-col grid, slice to multiple of 5
- HomeCategories: mascots per category (wallpapers/photography/skins/other), smaller tiles

resources/js/Pages/Home/HomeTrending.jsx

@@ -60,13 +60,13 @@ export default function HomeTrending({ items }) {
         <h2 className="text-xl font-bold text-white">
           🔥 Trending This Week
         </h2>
-        <a href="/browse" className="text-sm text-nova-300 hover:text-white transition">
+        <a href="/discover/trending" className="text-sm text-nova-300 hover:text-white transition">
           See all →
         </a>
       </div>
 
-      <div className="flex snap-x snap-mandatory gap-4 overflow-x-auto pb-3 lg:grid lg:grid-cols-4 xl:grid-cols-6 lg:overflow-visible">
-        {items.map((item) => (
+      <div className="flex snap-x snap-mandatory gap-4 overflow-x-auto pb-3 lg:grid lg:grid-cols-5 lg:overflow-visible">
+        {items.slice(0, Math.floor(items.length / 5) * 5 || items.length).map((item) => (
           <ArtCard key={item.id} item={item} />
         ))}
       </div>