feat: Inertia profile settings page, Studio edit redesign, EGS, Nova UI components\n\n- Redesign /dashboard/profile as Inertia React page (Settings/ProfileEdit)\n with SettingsLayout sidebar, Nova UI components (TextInput, Textarea,\n Toggle, Select, RadioGroup, Modal, Button), avatar drag-and-drop,\n password change, and account deletion sections\n- Redesign Studio artwork edit page with two-column layout, Nova components,\n integrated TagPicker, and version history modal\n- Add shared MarkdownEditor component\n- Add Early-Stage Growth System (EGS): SpotlightEngine, FeedBlender,\n GridFiller, AdaptiveTimeWindow, ActivityLayer, admin panel\n- Fix upload category/tag persistence (V1+V2 paths)\n- Fix tag source enum, category tree display, binding resolution\n- Add settings.jsx Vite entry, settings.blade.php wrapper\n- Update ProfileController with JSON response support for API calls\n- Various route fixes (profile.edit, toolbar settings link)"

resources/views/errors/403.blade.php

@@ -0,0 +1,43 @@
+{{--
+    403 — Forbidden
+    Use for: private artwork, banned content, region restrictions.
+    Shows login button if user is a guest; profile/discover if logged in.
+--}}
+@extends('errors._layout', [
+    'error_code'    => 403,
+    'error_title'   => 'Access Denied',
+    'error_message' => $message ?? 'You do not have permission to view this content.',
+])
+
+@section('badge', 'Forbidden')
+
+@section('primary-cta')
+@guest
+<a href="/login"
+   class="inline-flex items-center gap-2 rounded-xl bg-sky-500 hover:bg-sky-400 text-white font-semibold px-6 py-3 text-sm shadow-lg shadow-sky-900/30 transition-colors">
+    <i class="fas fa-sign-in-alt" aria-hidden="true"></i>
+    Sign In
+</a>
+@else
+<a href="/discover/trending"
+   class="inline-flex items-center gap-2 rounded-xl bg-sky-500 hover:bg-sky-400 text-white font-semibold px-6 py-3 text-sm shadow-lg shadow-sky-900/30 transition-colors">
+    <i class="fas fa-compass" aria-hidden="true"></i>
+    Back to Discover
+</a>
+@endguest
+@endsection
+
+@section('secondary-ctas')
+@guest
+<a href="/register" class="rounded-xl border border-white/10 hover:border-white/25 text-white/70 hover:text-white px-4 py-2 text-sm transition-colors">
+    Create Account
+</a>
+@else
+<a href="/@{{ Auth::user()->username }}" class="rounded-xl border border-white/10 hover:border-white/25 text-white/70 hover:text-white px-4 py-2 text-sm transition-colors">
+    My Profile
+</a>
+@endguest
+<a href="/" class="rounded-xl border border-white/10 hover:border-white/25 text-white/70 hover:text-white px-4 py-2 text-sm transition-colors">
+    Home
+</a>
+@endsection