Add mobile favorites UX and Android deep link support

app/.env.example

@@ -112,3 +112,13 @@ DEWEMOJI_EXTENSION_VERIFY_ENABLED=true
 DEWEMOJI_GOOGLE_PROJECT_ID=
 DEWEMOJI_GOOGLE_SERVER_KEY=
 DEWEMOJI_EXTENSION_IDS=
+
+DEWEMOJI_APK_RELEASE_ENABLED=false
+DEWEMOJI_APK_PUBLIC_BASE_URL=https://dewemoji.com/downloads
+DEWEMOJI_R2_PUBLIC_BASE_URL=
+DEWEMOJI_R2_APK_LATEST_KEY=apk/dewemoji-latest.apk
+DEWEMOJI_R2_APK_VERSION_KEY=apk/version.json
+DEWEMOJI_APK_APP_ID=com.dewemoji.app
+DEWEMOJI_APK_CHANNEL=stable
+DEWEMOJI_APK_MIN_SUPPORTED_VERSION_CODE=1
+DEWEMOJI_APK_ASSETLINKS_SHA256=

app/app/Http/Controllers/Api/V1/EmojiApiController.php

@@ -110,9 +110,9 @@ class EmojiApiController extends Controller
         $page = max((int) $request->query('page', 1), 1);
 
         $defaultLimit = max((int) config('dewemoji.pagination.default_limit', 20), 1);
-        $maxLimit = $tier === self::TIER_PRO
-            ? max((int) config('dewemoji.pagination.pro_max_limit', 50), 1)
-            : max((int) config('dewemoji.pagination.free_max_limit', 20), 1);
+        // Search result pagination is now feature-parity for all users.
+        // Keyword/glossary limits are enforced elsewhere (user_keywords quota logic).
+        $maxLimit = max((int) config('dewemoji.pagination.max_limit', 50), 1);
         $limit = min(max((int) $request->query('limit', $defaultLimit), 1), $maxLimit);
 
         $filtered = $this->filterItems($items, $q, $category, $subSlug);

app/app/Http/Controllers/Web/SiteController.php

@@ -301,6 +301,43 @@ class SiteController extends Controller
         ]);
     }
 
+    public function assetLinks(): JsonResponse
+    {
+        $appId = trim((string) config('dewemoji.apk_release.app_id', ''));
+        $rawFingerprints = (array) config('dewemoji.apk_release.assetlinks.fingerprints', []);
+        $fingerprints = [];
+        foreach ($rawFingerprints as $fingerprint) {
+            $normalized = $this->normalizeApkCertFingerprint((string) $fingerprint);
+            if ($normalized !== '') {
+                $fingerprints[] = $normalized;
+            }
+        }
+        $fingerprints = array_values(array_unique($fingerprints));
+
+        if ($appId === '' || $fingerprints === []) {
+            return response()->json([], 200, [
+                'Cache-Control' => 'no-store, no-cache, must-revalidate',
+                'Pragma' => 'no-cache',
+            ]);
+        }
+
+        return response()->json([
+            [
+                'relation' => [
+                    'delegate_permission/common.handle_all_urls',
+                ],
+                'target' => [
+                    'namespace' => 'android_app',
+                    'package_name' => $appId,
+                    'sha256_cert_fingerprints' => $fingerprints,
+                ],
+            ],
+        ], 200, [
+            'Cache-Control' => 'no-store, no-cache, must-revalidate',
+            'Pragma' => 'no-cache',
+        ]);
+    }
+
     public function privacy(): View
     {
         return view('site.privacy');
@@ -514,6 +551,24 @@ class SiteController extends Controller
         return rtrim($base, '/').'/'.ltrim($objectKey, '/');
     }
 
+    private function normalizeApkCertFingerprint(string $value): string
+    {
+        $clean = strtoupper(trim($value));
+        if ($clean === '') {
+            return '';
+        }
+
+        if (preg_match('/^[0-9A-F]{64}$/', $clean) === 1) {
+            return implode(':', str_split($clean, 2));
+        }
+
+        if (preg_match('/^[0-9A-F]{2}(?::[0-9A-F]{2}){31}$/', $clean) === 1) {
+            return $clean;
+        }
+
+        return '';
+    }
+
     /**
      * @param array<string,mixed> $emoji
      */

app/config/dewemoji.php

@@ -135,5 +135,8 @@ return [
             'latest_apk' => (string) env('DEWEMOJI_R2_APK_LATEST_KEY', 'apk/dewemoji-latest.apk'),
             'version_json' => (string) env('DEWEMOJI_R2_APK_VERSION_KEY', 'apk/version.json'),
         ],
+        'assetlinks' => [
+            'fingerprints' => array_values(array_filter(array_map('trim', explode(',', (string) env('DEWEMOJI_APK_ASSETLINKS_SHA256', ''))))),
+        ],
     ],
 ];

app/resources/views/site/emoji-detail.blade.php

@@ -111,8 +111,12 @@
                 <div class="glass-card rounded-[32px] aspect-square flex items-center justify-center relative overflow-hidden group">
                     <div class="absolute w-64 h-64 bg-yellow-500/20 rounded-full blur-3xl group-hover:bg-yellow-500/30 transition-colors duration-500"></div>
                     <div id="emoji-hero-symbol" class="text-[140px] md:text-[180px] leading-none select-none relative z-10 animate-float drop-shadow-2xl">{{ $symbol }}</div>
-                    <div class="absolute bottom-6 flex gap-3 opacity-0 group-hover:opacity-100 transition-all transform translate-y-2 group-hover:translate-y-0">
-                        <button onclick="copyCurrentEmoji()" class="bg-black/50 backdrop-blur text-white force-white p-3 rounded-full hover:bg-brand-sun hover:text-black transition-colors border border-white/10" title="Copy">
+                    <div class="absolute bottom-6 flex gap-3 opacity-100 sm:opacity-0 sm:group-hover:opacity-100 transition-all transform translate-y-0 sm:translate-y-2 sm:group-hover:translate-y-0">
+                        <button id="favorite-toggle-btn" type="button" class="w-12 h-12 bg-black/50 backdrop-blur text-white force-white rounded-full hover:bg-yellow-400/20 transition-colors border border-white/10 inline-flex items-center justify-center shrink-0" title="Add Favorite" aria-label="Add Favorite">
+                            <span id="favorite-toggle-icon" class="text-yellow-300 text-lg leading-none">☆</span>
+                            <span id="favorite-toggle-label" class="sr-only">Add Favorite</span>
+                        </button>
+                        <button onclick="copyCurrentEmoji()" class="w-12 h-12 bg-black/50 backdrop-blur text-white force-white rounded-full hover:bg-brand-sun hover:text-black transition-colors border border-white/10 inline-flex items-center justify-center shrink-0" title="Copy">
                             <i data-lucide="copy" class="w-5 h-5 force-white"></i>
                         </button>
                     </div>
@@ -150,18 +154,12 @@
                 <div>
                     <div class="flex items-center gap-3 mb-2">
                         <span class="bg-yellow-500/10 text-yellow-400 border border-yellow-500/20 px-3 py-1 rounded-full text-xs font-bold uppercase">{{ $subcategory }}</span>
+                        <span id="favorite-pill" class="hidden bg-yellow-500/10 text-yellow-300 border border-yellow-500/30 px-3 py-1 rounded-full text-xs font-bold uppercase">Favorite</span>
                     </div>
                     <h1 class="font-display text-5xl font-bold mb-4">{{ $name }}</h1>
                     <p class="text-gray-400 text-lg leading-relaxed">{{ $description }}</p>
                 </div>
 
-                <div class="flex gap-4">
-                    <button id="copy-current-emoji-btn" onclick="copyCurrentEmoji()" class="flex-1 bg-brand-ocean hover:bg-brand-oceanSoft text-white force-white font-bold h-14 rounded-xl flex items-center justify-center gap-3 text-lg transition-all shadow-[0_0_20px_rgba(32,83,255,0.35)] hover:shadow-[0_0_30px_rgba(32,83,255,0.55)]">
-                        <i data-lucide="copy" class="w-5 h-5 force-white"></i>
-                        Copy Emoji
-                    </button>
-                </div>
-
                 @if($supportsTone)
                     <div class="glass-card rounded-xl p-3">
                         <div class="text-xs font-mono text-gray-500 mb-2">Skin tone</div>
@@ -287,7 +285,7 @@
 </div>
 
 
-<div id="toast" class="fixed bottom-10 left-1/2 -translate-x-1/2 translate-y-24 opacity-0 transition-all duration-300 z-50 pointer-events-none">
+<div id="toast" class="fixed left-1/2 -translate-x-1/2 translate-y-24 opacity-0 transition-all duration-300 z-50 pointer-events-none" style="bottom: calc(env(safe-area-inset-bottom, 0px) + 6rem);">
     <div class="bg-brand-ocean text-white px-6 py-2 rounded-full font-bold shadow-[0_0_20px_rgba(32,83,255,0.45)] flex items-center gap-2">
         <i data-lucide="check" class="w-4 h-4"></i>
         <span id="toast-msg">Copied!</span>
@@ -331,8 +329,15 @@
 @push('scripts')
 <script>
 const RECENT_KEY = 'dewemoji_recent';
+const FAVORITES_KEY = 'dewemoji_favorites';
 const TONE_STORAGE_KEY = 'dewemoji_skin_tone';
 const SYMBOL_DEFAULT = @json($symbol);
+const DETAIL_SLUG = @json($slug);
+const DETAIL_NAME = @json($name);
+const DETAIL_CATEGORY = @json($category);
+const DETAIL_SUBCATEGORY = @json($subcategory);
+const DETAIL_SUPPORTS_TONE = @json($supportsTone);
+const DETAIL_VARIANTS_LIST = @json(array_values($toneVariants));
 const TONE_VARIANTS = @json($toneVariants);
 let currentDisplayEmoji = SYMBOL_DEFAULT;
 
@@ -363,22 +368,124 @@ function applyTone(tone) {
 
 function loadRecent() {
     try {
-        return JSON.parse(localStorage.getItem(RECENT_KEY) || '[]');
+        const parsed = JSON.parse(localStorage.getItem(RECENT_KEY) || '[]');
+        return Array.isArray(parsed) ? parsed.filter(isRecentEmojiToken) : [];
     } catch {
         return [];
     }
 }
 
+function isRecentEmojiToken(value) {
+    const s = String(value || '').trim();
+    if (!s) return false;
+    if (s.length > 24) return false;
+    if (/[:;&<#\\]/.test(s)) return false;
+    try {
+        return /\p{Extended_Pictographic}/u.test(s);
+    } catch {
+        return /[\u{1F300}-\u{1FAFF}\u{2600}-\u{27BF}]/u.test(s);
+    }
+}
+
 function saveRecent(items) {
-    localStorage.setItem(RECENT_KEY, JSON.stringify(items.slice(0, 8)));
+    const clean = items.filter(isRecentEmojiToken);
+    localStorage.setItem(RECENT_KEY, JSON.stringify(clean.slice(0, 8)));
 }
 
 function addRecent(emoji) {
+    if (!isRecentEmojiToken(emoji)) return;
     const curr = loadRecent().filter((e) => e !== emoji);
     curr.unshift(emoji);
     saveRecent(curr);
 }
 
+function loadFavorites() {
+    try {
+        const parsed = JSON.parse(localStorage.getItem(FAVORITES_KEY) || '[]');
+        if (!Array.isArray(parsed)) return [];
+        return parsed
+            .filter((item) => item && typeof item === 'object')
+            .map((item) => ({
+                slug: String(item.slug || '').trim(),
+                emoji: String(item.emoji || '').trim(),
+                name: String(item.name || '').trim(),
+                category: String(item.category || '').trim(),
+                subcategory: String(item.subcategory || '').trim(),
+                supports_skin_tone: Boolean(item.supports_skin_tone),
+                variants: Array.isArray(item.variants) ? item.variants : [],
+            }))
+            .filter((item) => item.slug !== '' && isRecentEmojiToken(item.emoji));
+    } catch {
+        return [];
+    }
+}
+
+function saveFavorites(items) {
+    localStorage.setItem(FAVORITES_KEY, JSON.stringify(items.slice(0, 24)));
+}
+
+function isCurrentFavorite() {
+    return loadFavorites().some((item) => item.slug === DETAIL_SLUG);
+}
+
+function renderFavoriteButton() {
+    const btn = document.getElementById('favorite-toggle-btn');
+    const icon = document.getElementById('favorite-toggle-icon');
+    const label = document.getElementById('favorite-toggle-label');
+    const pill = document.getElementById('favorite-pill');
+    if (!btn || !icon || !label) return;
+    const active = isCurrentFavorite();
+    icon.textContent = active ? '★' : '☆';
+    icon.classList.toggle('text-yellow-300', true);
+    icon.classList.toggle('text-gray-300', !active);
+    label.textContent = active ? 'Favorited' : 'Add Favorite';
+    btn.title = active ? 'Remove Favorite' : 'Add Favorite';
+    btn.setAttribute('aria-label', active ? 'Remove Favorite' : 'Add Favorite');
+    btn.classList.toggle('border-yellow-400/30', active);
+    btn.classList.toggle('bg-yellow-400/10', active);
+    if (pill) {
+        pill.classList.toggle('hidden', !active);
+    }
+}
+
+function toggleCurrentFavorite() {
+    const current = loadFavorites();
+    const remaining = current.filter((item) => item.slug !== DETAIL_SLUG);
+    const isRemoving = remaining.length !== current.length;
+    if (isRemoving) {
+        saveFavorites(remaining);
+        renderFavoriteButton();
+        if (typeof showToast === 'function') showToast('Removed from favorites');
+        else showDetailToast('Removed from favorites');
+        return false;
+    }
+    remaining.unshift({
+        slug: DETAIL_SLUG,
+        emoji: currentDisplayEmoji,
+        name: DETAIL_NAME,
+        category: DETAIL_CATEGORY,
+        subcategory: DETAIL_SUBCATEGORY,
+        supports_skin_tone: Boolean(DETAIL_SUPPORTS_TONE),
+        variants: Array.isArray(DETAIL_VARIANTS_LIST) ? DETAIL_VARIANTS_LIST : [],
+    });
+    saveFavorites(remaining);
+    renderFavoriteButton();
+    if (typeof showToast === 'function') showToast('Added to favorites');
+    else showDetailToast('Added to favorites');
+    return true;
+}
+
+function showDetailToast(message) {
+    const toast = document.getElementById('toast');
+    const msg = document.getElementById('toast-msg');
+    if (!toast || !msg) return;
+    msg.innerText = message;
+    toast.classList.remove('translate-y-24', 'opacity-0');
+    setTimeout(() => {
+        toast.classList.add('translate-y-24', 'opacity-0');
+    }, 1500);
+}
+
 function copyCurrentEmoji() {
     copyToClipboard(currentDisplayEmoji);
 }
@@ -386,13 +493,7 @@ function copyCurrentEmoji() {
 function copyToClipboard(text) {
     navigator.clipboard.writeText(text).then(() => {
         addRecent(text);
-        const toast = document.getElementById('toast');
-        const msg = document.getElementById('toast-msg');
-        msg.innerText = `Copied ${text}`;
-        toast.classList.remove('translate-y-24', 'opacity-0');
-        setTimeout(() => {
-            toast.classList.add('translate-y-24', 'opacity-0');
-        }, 1500);
+        showDetailToast(`Copied ${text}`);
     });
 }
 
@@ -414,6 +515,9 @@ document.addEventListener('keydown', (e) => {
     });
 })();
 
+document.getElementById('favorite-toggle-btn')?.addEventListener('click', toggleCurrentFavorite);
+renderFavoriteButton();
+
 // Treat opening the single-emoji page as a "recently viewed emoji" event.
 addRecent(currentDisplayEmoji);
 

app/resources/views/site/home.blade.php

@@ -100,6 +100,13 @@
                             </div>
                             <input id="q" type="text" placeholder="Search emojis by keyword, mood, meaning..." class="w-full bg-transparent text-white placeholder-gray-500 focus:outline-none font-medium h-full text-sm sm:text-base">
                             <div class="flex md:hidden items-center gap-2 pr-2">
+                                <button id="mobile-filters-open" type="button" class="h-8 rounded-lg bg-white/5 border border-white/10 px-2 text-xs text-gray-300 hover:bg-white/10 transition-colors inline-flex items-center gap-1.5 shrink-0">
+                                    <i data-lucide="sliders-horizontal" class="w-3.5 h-3.5"></i>
+                                    <span>Filter</span>
+                                </button>
+                                <button id="favorites-only-toggle-mobile" type="button" class="w-8 h-8 rounded-full theme-surface border border-white/10 flex items-center justify-center text-gray-300 hover:text-white transition-colors shrink-0" title="Show favorites only">
+                                    <span class="text-sm leading-none">☆</span>
+                                </button>
                                 <button id="tone-toggle-mobile" class="w-8 h-8 rounded-full theme-surface border border-white/10 flex items-center justify-center text-gray-300 hover:text-white transition-colors shrink-0" title="Tone: Default">
                                     <span id="tone-dot-mobile" class="w-3 h-3 rounded-full bg-white/80 border border-white/30"></span>
                                 </button>
@@ -112,12 +119,15 @@
                     </div>
 
                     <div class="flex items-center gap-3 shrink-0">
-                        <select id="category" class="bg-[#151518] border border-white/10 rounded-xl px-4 text-sm text-gray-300 focus:outline-none focus:border-brand-ocean hover:bg-white/5 transition-colors h-11 cursor-pointer appearance-none theme-surface">
+                        <select id="category" class="hidden md:block bg-[#151518] border border-white/10 rounded-xl px-4 text-sm text-gray-300 focus:outline-none focus:border-brand-ocean hover:bg-white/5 transition-colors h-11 cursor-pointer appearance-none theme-surface">
                             <option value="">All Categories</option>
                         </select>
-                        <select id="subcategory" class="bg-[#151518] border border-white/10 rounded-xl px-4 text-sm text-gray-300 focus:outline-none focus:border-brand-ocean hover:bg-white/5 transition-colors h-11 cursor-pointer appearance-none theme-surface" disabled>
+                        <select id="subcategory" class="hidden md:block bg-[#151518] border border-white/10 rounded-xl px-4 text-sm text-gray-300 focus:outline-none focus:border-brand-ocean hover:bg-white/5 transition-colors h-11 cursor-pointer appearance-none theme-surface" disabled>
                             <option value="">All Subcategories</option>
                         </select>
+                        <button id="favorites-only-toggle" type="button" class="hidden md:flex w-10 h-10 rounded-full theme-surface border border-white/10 shadow-lg items-center justify-center text-gray-300 hover:text-white transition-colors" title="Show favorites only">
+                            <span class="text-sm leading-none">☆</span>
+                        </button>
                         <button id="tone-toggle" class="hidden md:flex w-10 h-10 rounded-full theme-surface border border-white/10 shadow-lg items-center justify-center text-gray-300 hover:text-white transition-colors" title="Tone: Default">
                             <span id="tone-dot-desktop" class="w-4 h-4 rounded-full bg-white/80 border border-white/30"></span>
                         </button>
@@ -173,7 +183,7 @@
                             </div>
                             <span id="dataset-count" class="text-[10px] text-gray-500 font-mono">0 items</span>
                         </div>
-                        <div>
+                        <div class="mt-4">
                             <h4 class="font-bold text-sm">Recent</h4>
                             <div id="recent-list" class="flex gap-2 mt-2"></div>
                         </div>
@@ -209,7 +219,7 @@
     </main>
 </div>
 
-<div id="toast" class="fixed bottom-8 left-1/2 -translate-x-1/2 translate-y-24 opacity-0 transition-all duration-300 z-50">
+<div id="toast" class="fixed left-1/2 -translate-x-1/2 translate-y-24 opacity-0 transition-all duration-300 z-50" style="bottom: calc(env(safe-area-inset-bottom, 0px) + 6rem);">
     <div class="bg-brand-ocean text-white px-4 py-2 rounded-full font-bold shadow-[0_0_20px_rgba(32,83,255,0.45)] flex items-center gap-2 text-sm">
         <i data-lucide="check" class="w-4 h-4"></i>
         <span id="toast-msg">Copied!</span>
@@ -243,6 +253,30 @@
         </form>
     </div>
 </div>
+
+<div id="mobile-filters-sheet" class="hidden md:hidden fixed inset-0 z-50 items-end">
+    <div id="mobile-filters-backdrop" class="absolute inset-0 bg-black/70 backdrop-blur-sm"></div>
+    <div class="relative z-10 w-full rounded-t-3xl glass-card theme-surface p-5 pb-6 border-t border-white/10" style="padding-bottom: calc(env(safe-area-inset-bottom, 0px) + 6rem);">
+        <div class="flex items-center justify-between mb-4">
+            <h3 class="text-sm font-semibold text-gray-100">Filters</h3>
+            <button id="mobile-filters-close" type="button" class="w-9 h-9 rounded-full bg-white/10 hover:bg-white/20 flex items-center justify-center text-gray-200">
+                <i data-lucide="x" class="w-4 h-4"></i>
+            </button>
+        </div>
+        <div class="grid gap-3">
+            <select id="category-mobile" class="bg-[#151518] border border-white/10 rounded-xl px-4 text-sm text-gray-300 focus:outline-none focus:border-brand-ocean h-12 cursor-pointer appearance-none theme-surface">
+                <option value="">All Categories</option>
+            </select>
+            <select id="subcategory-mobile" class="bg-[#151518] border border-white/10 rounded-xl px-4 text-sm text-gray-300 focus:outline-none focus:border-brand-ocean h-12 cursor-pointer appearance-none theme-surface" disabled>
+                <option value="">All Subcategories</option>
+            </select>
+            <div class="grid grid-cols-2 gap-3 pt-1">
+                <button id="mobile-filters-reset" type="button" class="h-11 rounded-xl border border-white/10 text-sm text-gray-200 hover:bg-white/5">Reset</button>
+                <button id="mobile-filters-apply" type="button" class="h-11 rounded-xl bg-brand-ocean text-white force-white text-sm font-semibold">Apply</button>
+            </div>
+        </div>
+    </div>
+</div>
 @endsection
 
 @push('scripts')
@@ -259,6 +293,16 @@
     const qEl = document.getElementById('q');
     const catEl = document.getElementById('category');
     const subEl = document.getElementById('subcategory');
+    const mobileFiltersOpenEl = document.getElementById('mobile-filters-open');
+    const mobileFiltersSheetEl = document.getElementById('mobile-filters-sheet');
+    const mobileFiltersBackdropEl = document.getElementById('mobile-filters-backdrop');
+    const mobileFiltersCloseEl = document.getElementById('mobile-filters-close');
+    const mobileFiltersApplyEl = document.getElementById('mobile-filters-apply');
+    const mobileFiltersResetEl = document.getElementById('mobile-filters-reset');
+    const catMobileEl = document.getElementById('category-mobile');
+    const subMobileEl = document.getElementById('subcategory-mobile');
+    const favoritesOnlyDesktopBtn = document.getElementById('favorites-only-toggle');
+    const favoritesOnlyMobileBtn = document.getElementById('favorites-only-toggle-mobile');
     const toneDesktopBtn = document.getElementById('tone-toggle');
     const toneMobileBtn = document.getElementById('tone-toggle-mobile');
     const toneDotDesktop = document.getElementById('tone-dot-desktop');
@@ -274,6 +318,8 @@
     const datasetCount = document.getElementById('dataset-count');
     const trendingList = document.getElementById('trending-list');
     const recentList = document.getElementById('recent-list');
+    const favoritesList = document.getElementById('favorites-list');
+    const favoritesClearEl = document.getElementById('favorites-clear');
     const heroCards = document.getElementById('hero-cards');
     const heroMain = document.getElementById('hero-main');
     const heroOptional1 = document.getElementById('hero-optional-1');
@@ -286,6 +332,9 @@
     const labelsToggleEl = document.getElementById('labels-toggle');
     const densityStorageKey = 'dewemoji_grid_density';
     const labelsStorageKey = 'dewemoji_grid_show_labels';
+    const recentStorageKey = 'dewemoji_recent';
+    const favoritesStorageKey = 'dewemoji_favorites';
+    const favoritesOnlyStorageKey = 'dewemoji_favorites_only';
     let isFetching = false;
     let autoLoadObserver = null;
     const AUTOLOAD_THRESHOLD_PX = 420;
@@ -345,6 +394,50 @@
         if (labelsToggleEl) labelsToggleEl.textContent = `Labels: ${enabled ? 'On' : 'Off'}`;
     }
 
+    function isFavoritesOnlyEnabled() {
+        return localStorage.getItem(favoritesOnlyStorageKey) === '1';
+    }
+
+    function setFavoritesOnlyEnabled(enabled) {
+        localStorage.setItem(favoritesOnlyStorageKey, enabled ? '1' : '0');
+        applyFavoritesOnlyUI();
+    }
+
+    function applyFavoritesOnlyUI() {
+        const active = isFavoritesOnlyEnabled();
+        [favoritesOnlyDesktopBtn, favoritesOnlyMobileBtn].forEach((btn) => {
+            if (!btn) return;
+            btn.classList.toggle('text-yellow-300', active);
+            btn.classList.toggle('border-yellow-400/30', active);
+            btn.classList.toggle('bg-yellow-400/10', active);
+            btn.classList.toggle('text-gray-300', !active);
+            btn.title = active ? 'Showing favorites only' : 'Show favorites only';
+            btn.setAttribute('aria-pressed', active ? 'true' : 'false');
+            const icon = btn.querySelector('span');
+            if (icon) icon.textContent = active ? '★' : '☆';
+        });
+    }
+
+    function isMobileFiltersOpen() {
+        return mobileFiltersSheetEl?.classList.contains('flex');
+    }
+
+    function openMobileFilters() {
+        if (!mobileFiltersSheetEl) return;
+        syncMobileFiltersFromDesktop();
+        mobileFiltersSheetEl.classList.remove('hidden');
+        mobileFiltersSheetEl.classList.add('flex');
+        setTimeout(() => lucide.createIcons(), 0);
+    }
+
+    function closeMobileFilters() {
+        if (!mobileFiltersSheetEl) return false;
+        if (!isMobileFiltersOpen()) return false;
+        mobileFiltersSheetEl.classList.add('hidden');
+        mobileFiltersSheetEl.classList.remove('flex');
+        return true;
+    }
+
     if (initialQuery) qEl.value = initialQuery;
 
     function slugify(text) {
@@ -446,7 +539,7 @@
 
 
     function hasActiveFilters() {
-        return qEl.value.trim() !== '' || catEl.value !== '' || subEl.value !== '';
+        return isFavoritesOnlyEnabled() || qEl.value.trim() !== '' || catEl.value !== '' || subEl.value !== '';
     }
 
     function updateHeroMode() {
@@ -461,24 +554,50 @@
         const res = await fetch('/v1/categories');
         const data = await res.json();
         state.categories = data || {};
-        Object.keys(state.categories).forEach((name) => {
-            const opt = document.createElement('option');
-            opt.value = name;
-            opt.textContent = name;
-            catEl.appendChild(opt);
-        });
+        const fillCategorySelect = (selectEl) => {
+            if (!selectEl) return;
+            selectEl.innerHTML = '<option value="">All Categories</option>';
+            Object.keys(state.categories).forEach((name) => {
+                const opt = document.createElement('option');
+                opt.value = name;
+                opt.textContent = name;
+                selectEl.appendChild(opt);
+            });
+        };
+        fillCategorySelect(catEl);
+        fillCategorySelect(catMobileEl);
     }
 
-    function renderSubcategories() {
-        const subs = state.categories[catEl.value] || [];
-        subEl.innerHTML = '<option value="">All subcategories</option>';
+    function fillSubcategories(selectEl, categoryValue, selectedValue = '') {
+        if (!selectEl) return;
+        const subs = state.categories[categoryValue] || [];
+        selectEl.innerHTML = '<option value="">All Subcategories</option>';
         subs.forEach((s) => {
             const opt = document.createElement('option');
             opt.value = s;
             opt.textContent = s;
-            subEl.appendChild(opt);
+            selectEl.appendChild(opt);
         });
-        subEl.disabled = subs.length === 0;
+        const hasSelected = Array.from(selectEl.options).some((opt) => opt.value === selectedValue);
+        selectEl.value = hasSelected ? selectedValue : '';
+        selectEl.disabled = subs.length === 0;
+    }
+
+    function renderSubcategories() {
+        fillSubcategories(subEl, catEl.value, subEl.value);
+        fillSubcategories(subMobileEl, catEl.value, subEl.value);
+    }
+
+    function syncMobileFiltersFromDesktop() {
+        if (!catMobileEl || !subMobileEl) return;
+        catMobileEl.value = catEl.value;
+        fillSubcategories(subMobileEl, catMobileEl.value, subEl.value);
+    }
+
+    function syncDesktopFiltersFromMobile() {
+        if (!catMobileEl || !subMobileEl) return;
+        catEl.value = catMobileEl.value;
+        fillSubcategories(subEl, catEl.value, subMobileEl.value);
     }
 
     function showToast(message) {
@@ -491,17 +610,32 @@
 
     function loadRecent() {
         try {
-            return JSON.parse(localStorage.getItem('dewemoji_recent') || '[]');
+            const parsed = JSON.parse(localStorage.getItem(recentStorageKey) || '[]');
+            return Array.isArray(parsed) ? parsed.filter(isRecentEmojiToken) : [];
         } catch {
             return [];
         }
     }
 
+    function isRecentEmojiToken(value) {
+        const s = String(value || '').trim();
+        if (!s) return false;
+        if (s.length > 24) return false;
+        if (/[:;&<#\\]/.test(s)) return false;
+        try {
+            return /\p{Extended_Pictographic}/u.test(s);
+        } catch {
+            return /[\u{1F300}-\u{1FAFF}\u{2600}-\u{27BF}]/u.test(s);
+        }
+    }
+
     function saveRecent(items) {
-        localStorage.setItem('dewemoji_recent', JSON.stringify(items.slice(0, 8)));
+        const clean = items.filter(isRecentEmojiToken);
+        localStorage.setItem(recentStorageKey, JSON.stringify(clean.slice(0, 8)));
     }
 
     function addRecent(emoji) {
+        if (!isRecentEmojiToken(emoji)) return;
         const curr = loadRecent().filter((e) => e !== emoji);
         curr.unshift(emoji);
         saveRecent(curr);
@@ -522,6 +656,113 @@
         });
     }
 
+    function loadFavorites() {
+        try {
+            const parsed = JSON.parse(localStorage.getItem(favoritesStorageKey) || '[]');
+            if (!Array.isArray(parsed)) return [];
+            return parsed
+                .filter((item) => item && typeof item === 'object')
+                .map((item) => ({
+                    slug: String(item.slug || '').trim(),
+                    emoji: String(item.emoji || '').trim(),
+                    name: String(item.name || '').trim(),
+                    category: String(item.category || '').trim(),
+                    subcategory: String(item.subcategory || '').trim(),
+                    supports_skin_tone: Boolean(item.supports_skin_tone),
+                    variants: Array.isArray(item.variants) ? item.variants : [],
+                }))
+                .filter((item) => item.slug !== '' && isRecentEmojiToken(item.emoji));
+        } catch {
+            return [];
+        }
+    }
+
+    function saveFavorites(items) {
+        localStorage.setItem(favoritesStorageKey, JSON.stringify(items.slice(0, 24)));
+    }
+
+    function isFavoriteSlug(slug) {
+        const key = String(slug || '');
+        return loadFavorites().some((item) => item.slug === key);
+    }
+
+    function toggleFavorite(item) {
+        const slug = String(item?.slug || '');
+        if (!slug) return false;
+        const current = loadFavorites();
+        const all = current.filter((row) => row.slug !== slug);
+        const exists = all.length !== current.length;
+        if (!exists) {
+            all.unshift({
+                slug,
+                emoji: emojiWithTone(item),
+                name: String(item?.name || ''),
+                category: String(item?.category || ''),
+                subcategory: String(item?.subcategory || ''),
+                supports_skin_tone: Boolean(item?.supports_skin_tone),
+                variants: Array.isArray(item?.variants) ? item.variants : [],
+            });
+        }
+        saveFavorites(all);
+        renderFavorites();
+        return !exists;
+    }
+
+    function renderFavorites() {
+        if (!favoritesList) return;
+        const favorites = loadFavorites();
+        favoritesList.innerHTML = '';
+        if (favorites.length === 0) {
+            const empty = document.createElement('span');
+            empty.className = 'text-xs text-gray-500';
+            empty.textContent = 'No favorites yet';
+            favoritesList.appendChild(empty);
+            return;
+        }
+        favorites.slice(0, 8).forEach((fav) => {
+            const a = document.createElement('a');
+            a.href = `/emoji/${encodeURIComponent(fav.slug)}`;
+            a.className = 'w-8 h-8 rounded bg-white/5 hover:bg-white/10 flex items-center justify-center text-lg';
+            a.title = fav.name || fav.slug;
+            a.textContent = fav.emoji;
+            favoritesList.appendChild(a);
+        });
+    }
+
+    function favoriteItemsForCatalog() {
+        const q = qEl.value.trim().toLowerCase();
+        const cat = String(catEl.value || '').trim().toLowerCase();
+        const sub = String(subEl.value || '').trim().toLowerCase();
+
+        return loadFavorites().filter((item) => {
+            const name = String(item.name || '').toLowerCase();
+            const slug = String(item.slug || '').toLowerCase();
+            const emoji = String(item.emoji || '');
+            const itemCat = String(item.category || '').toLowerCase();
+            const itemSub = String(item.subcategory || '').toLowerCase();
+
+            if (q && !(name.includes(q) || slug.includes(q) || emoji.includes(q))) {
+                return false;
+            }
+            if (cat && itemCat !== cat) {
+                return false;
+            }
+            if (sub && itemSub !== sub) {
+                return false;
+            }
+            return true;
+        }).map((item) => ({
+            emoji: item.emoji,
+            emoji_base: item.emoji,
+            name: item.name || item.slug,
+            slug: item.slug,
+            category: item.category || '',
+            subcategory: item.subcategory || '',
+            supports_skin_tone: Boolean(item.supports_skin_tone),
+            variants: Array.isArray(item.variants) ? item.variants : [],
+        }));
+    }
+
     function renderTrendingFromItems(items) {
         const score = new Map();
         items.forEach((item) => {
@@ -574,6 +815,23 @@
 
         updateHeroMode();
 
+        if (isFavoritesOnlyEnabled()) {
+            try {
+                const allFavorites = favoriteItemsForCatalog();
+                state.total = allFavorites.length;
+                const start = (state.page - 1) * state.limit;
+                const incoming = allFavorites.slice(start, start + state.limit);
+                if (reset) state.items = [];
+                incoming.forEach((item) => state.items.push(item));
+                renderGrid(incoming, reset);
+                updateStats();
+                syncUrl();
+                return;
+            } finally {
+                isFetching = false;
+            }
+        }
+
         const params = new URLSearchParams({ page: String(state.page), limit: String(state.limit) });
         if (qEl.value.trim()) params.set('q', qEl.value.trim());
         if (catEl.value) params.set('category', catEl.value);
@@ -619,10 +877,12 @@
         const showLabels = isLabelsEnabled();
         items.forEach((item) => {
             const renderedEmoji = emojiWithTone(item);
+            const favoriteActive = isFavoriteSlug(item.slug);
             const card = document.createElement('div');
             card.className = 'emoji-card relative aspect-square rounded-lg bg-white/5 hover:bg-white/10 transition-transform hover:scale-[1.02] border border-transparent hover:border-white/20 overflow-hidden group';
             card.innerHTML = showLabels
                 ? `
+                    ${favoriteActive ? '<span class="absolute top-1.5 left-1.5 z-10 text-yellow-300 text-sm leading-none select-none pointer-events-none" title="Favorited">★</span>' : ''}
                     <a href="/emoji/${encodeURIComponent(item.slug)}" class="absolute inset-0 flex items-center justify-center pb-10">
                         <span class="leading-none" style="font-size:var(--emoji-size)">${esc(renderedEmoji)}</span>
                     </a>
@@ -632,6 +892,7 @@
                     </div>
                 `
                 : `
+                    ${favoriteActive ? '<span class="absolute top-1.5 left-1.5 z-10 text-yellow-300 text-sm leading-none select-none pointer-events-none" title="Favorited">★</span>' : ''}
                     <a href="/emoji/${encodeURIComponent(item.slug)}" class="absolute inset-0 flex items-center justify-center">
                         <span class="leading-none" style="font-size:var(--emoji-size)">${esc(renderedEmoji)}</span>
                     </a>
@@ -661,7 +922,7 @@
 
     function updateStats() {
         count.textContent = `${state.items.length} / ${state.total}`;
-        resultCount.textContent = `Showing ${state.items.length}`;
+        resultCount.textContent = `Showing ${state.items.length}${isFavoritesOnlyEnabled() ? ' • Favorites' : ''}`;
         datasetCount.textContent = `${state.total} matches`;
         more.classList.toggle('hidden', state.items.length >= state.total);
     }
@@ -678,6 +939,24 @@
     });
 
     subEl.addEventListener('change', () => fetchEmojis(true));
+    catMobileEl?.addEventListener('change', () => {
+        fillSubcategories(subMobileEl, catMobileEl.value, '');
+    });
+    subMobileEl?.addEventListener('change', () => {
+        // no-op; applied explicitly via button for better mobile UX
+    });
+    mobileFiltersOpenEl?.addEventListener('click', openMobileFilters);
+    mobileFiltersCloseEl?.addEventListener('click', closeMobileFilters);
+    mobileFiltersBackdropEl?.addEventListener('click', closeMobileFilters);
+    mobileFiltersResetEl?.addEventListener('click', () => {
+        if (catMobileEl) catMobileEl.value = '';
+        fillSubcategories(subMobileEl, '', '');
+    });
+    mobileFiltersApplyEl?.addEventListener('click', async () => {
+        syncDesktopFiltersFromMobile();
+        closeMobileFilters();
+        await fetchEmojis(true);
+    });
     const onToneChange = (nextTone = null) => {
         const tone = nextTone || selectedTone();
         setToneControlValue(tone);
@@ -783,9 +1062,44 @@
         applyLabelsToggleUI();
         fetchEmojis(true);
     });
+    const onFavoritesOnlyToggle = async () => {
+        const next = !isFavoritesOnlyEnabled();
+        if (next && loadFavorites().length === 0) {
+            showToast('No favorites yet');
+            return;
+        }
+        setFavoritesOnlyEnabled(next);
+        await fetchEmojis(true);
+    };
+    favoritesOnlyDesktopBtn?.addEventListener('click', onFavoritesOnlyToggle);
+    favoritesOnlyMobileBtn?.addEventListener('click', onFavoritesOnlyToggle);
+    favoritesClearEl?.addEventListener('click', () => {
+        saveFavorites([]);
+        renderFavorites();
+        if (isFavoritesOnlyEnabled()) {
+            setFavoritesOnlyEnabled(false);
+            fetchEmojis(true);
+        }
+        showToast('Favorites cleared');
+    });
+
+    window.dewemojiHandleAndroidBack = () => {
+        if (closeMobileFilters()) return true;
+        if (keywordEditModal?.classList.contains('flex')) {
+            closeKeywordEdit();
+            return true;
+        }
+        return false;
+    };
+    window.addEventListener('keydown', (e) => {
+        if (e.key === 'Escape') {
+            if (closeMobileFilters()) return;
+        }
+    });
 
     (async () => {
         applyLabelsToggleUI();
+        applyFavoritesOnlyUI();
         setToneControlValue(localStorage.getItem(toneStorageKey) || 'off');
         await loadCategories();
         if (initialCategory && state.categories[initialCategory]) {
@@ -799,6 +1113,7 @@
         await fetchEmojis(true);
         renderTrendingFromItems(state.items);
         renderRecent();
+        renderFavorites();
         updateHeroMode();
         if (catalogScrollEl) {
             catalogScrollEl.addEventListener('scroll', () => {

app/routes/web.php

@@ -19,6 +19,7 @@ Route::post('/pricing/currency', [SiteController::class, 'setPricingCurrency'])-
 Route::get('/download', [SiteController::class, 'download'])->name('download');
 Route::get('/downloads/version.json', [SiteController::class, 'downloadVersionJson'])->name('downloads.version');
 Route::get('/downloads/dewemoji-latest.apk', [SiteController::class, 'downloadLatestApk'])->name('downloads.latest-apk');
+Route::get('/.well-known/assetlinks.json', [SiteController::class, 'assetLinks'])->name('assetlinks');
 Route::get('/support', [SiteController::class, 'support'])->name('support');
 Route::get('/privacy', [SiteController::class, 'privacy'])->name('privacy');
 Route::get('/terms', [SiteController::class, 'terms'])->name('terms');

app/tests/Feature/SitePagesTest.php

@@ -15,6 +15,9 @@ class SitePagesTest extends TestCase
         config()->set('dewemoji.apk_release.r2_public_base_url', 'https://downloads.example.com');
         config()->set('dewemoji.apk_release.r2_keys.latest_apk', 'apk/dewemoji-latest.apk');
         config()->set('dewemoji.apk_release.r2_keys.version_json', 'apk/version.json');
+        config()->set('dewemoji.apk_release.assetlinks.fingerprints', [
+            'AA:BB:CC:DD:EE:FF:00:11:22:33:44:55:66:77:88:99:AA:BB:CC:DD:EE:FF:00:11:22:33:44:55:66:77:88:99',
+        ]);
     }
 
     public function test_core_pages_are_available(): void
@@ -54,4 +57,19 @@ class SitePagesTest extends TestCase
             ->assertStatus(302)
             ->assertRedirect('https://downloads.example.com/apk/dewemoji-latest.apk');
     }
+
+    public function test_assetlinks_endpoint_is_available(): void
+    {
+        $this->get('/.well-known/assetlinks.json')
+            ->assertOk()
+            ->assertJson([
+                [
+                    'relation' => ['delegate_permission/common.handle_all_urls'],
+                    'target' => [
+                        'namespace' => 'android_app',
+                        'package_name' => 'com.dewemoji.app',
+                    ],
+                ],
+            ]);
+    }
 }

dewemoji-capacitor/android/app/src/main/AndroidManifest.xml

@@ -22,6 +22,20 @@
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
 
+            <intent-filter android:autoVerify="true">
+                <action android:name="android.intent.action.VIEW" />
+                <category android:name="android.intent.category.DEFAULT" />
+                <category android:name="android.intent.category.BROWSABLE" />
+                <data android:scheme="https" android:host="dewemoji.com" />
+            </intent-filter>
+
+            <intent-filter android:autoVerify="true">
+                <action android:name="android.intent.action.VIEW" />
+                <category android:name="android.intent.category.DEFAULT" />
+                <category android:name="android.intent.category.BROWSABLE" />
+                <data android:scheme="https" android:host="www.dewemoji.com" />
+            </intent-filter>
+
         </activity>
 
         <provider

dewemoji-capacitor/android/app/src/main/java/com/dewemoji/app/MainActivity.java

@@ -9,6 +9,7 @@ import android.net.Uri;
 import android.os.Build;
 import android.os.Bundle;
 import android.util.Log;
+import android.webkit.WebView;
 import android.widget.Toast;
 
 import androidx.core.view.WindowCompat;
@@ -47,6 +48,38 @@ public class MainActivity extends BridgeActivity {
         }
     }
 
+    @Override
+    public void onBackPressed() {
+        WebView webView = getBridge() != null ? getBridge().getWebView() : null;
+        if (webView == null) {
+            super.onBackPressed();
+            return;
+        }
+
+        try {
+            webView.evaluateJavascript(
+                "(function(){try{return (window.dewemojiHandleAndroidBack && window.dewemojiHandleAndroidBack()) ? '1' : '0';}catch(e){return '0';}})();",
+                value -> {
+                    boolean handled = value != null && value.contains("1");
+                    if (handled) {
+                        return;
+                    }
+                    if (webView.canGoBack()) {
+                        webView.goBack();
+                        return;
+                    }
+                    MainActivity.super.onBackPressed();
+                }
+            );
+        } catch (Exception ex) {
+            if (webView.canGoBack()) {
+                webView.goBack();
+            } else {
+                super.onBackPressed();
+            }
+        }
+    }
+
     private void hideSystemBars() {
         WindowCompat.setDecorFitsSystemWindows(getWindow(), false);
         WindowInsetsControllerCompat controller =