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/HomeCTA.jsx

@@ -0,0 +1,44 @@
+import React from 'react'
+
+/**
+ * Upload CTA banner — shown at the bottom of both guest and logged-in homepages.
+ */
+export default function HomeCTA({ isLoggedIn }) {
+  const uploadHref = isLoggedIn ? '/upload' : '/login?redirect=/upload'
+
+  return (
+    <section className="mt-14 px-4 sm:px-6 lg:px-8">
+      <div className="relative overflow-hidden rounded-2xl bg-gradient-to-br from-accent/20 via-nova-800 to-nova-900 px-8 py-12 text-center ring-1 ring-white/5">
+        {/* Decorative blobs */}
+        <div className="pointer-events-none absolute -top-12 -right-12 h-40 w-40 rounded-full bg-accent/10 blur-3xl" />
+        <div className="pointer-events-none absolute -bottom-10 -left-10 h-32 w-32 rounded-full bg-sky-500/10 blur-2xl" />
+
+        <div className="relative z-10">
+          <p className="text-xs font-semibold uppercase tracking-widest text-accent">Join the community</p>
+          <h2 className="mt-2 text-2xl font-bold text-white sm:text-3xl">
+            Ready to share your creativity?
+          </h2>
+          <p className="mx-auto mt-3 max-w-md text-sm text-nova-300">
+            Upload your artworks, wallpapers, and skins to reach thousands of enthusiasts around the world.
+          </p>
+          <div className="mt-6 flex flex-wrap justify-center gap-3">
+            <a
+              href={uploadHref}
+              className="rounded-xl bg-accent px-6 py-2.5 text-sm font-semibold text-white shadow-lg shadow-accent/20 transition hover:brightness-110 focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-accent"
+            >
+              Upload your artwork
+            </a>
+            {!isLoggedIn && (
+              <a
+                href="/register"
+                className="rounded-xl border border-white/10 bg-nova-700 px-6 py-2.5 text-sm font-semibold text-white transition hover:bg-nova-600"
+              >
+                Create account
+              </a>
+            )}
+          </div>
+        </div>
+      </div>
+    </section>
+  )
+}