feat: add landing page templates and registration modal

- Implemented header and hero section in _header.html.twig and _hero_art.html.twig.
- Created a pre-registration modal in _reg_modal.html.twig with form fields and validation.
- Added page scripts for dynamic behavior and interaction in _page_scripts.html.twig.
- Developed landing page structure in landing.html.twig, integrating header, footer, and modal.
- Introduced tests for landing page rendering and registry validation in LandingPageTest.php and LandingRegistryTest.php.

templates/public/_page_scripts.html.twig

@@ -0,0 +1,166 @@
+		<script>
+			(function () {
+'use strict';
+var FA = [
+'۰',
+'۱',
+'۲',
+'۳',
+'۴',
+'۵',
+'۶',
+'۷',
+'۸',
+'۹'
+];
+function groupFa(n) {
+return String(n).replace(/\B(?=(\d{3})+(?!\d))/g, '،').replace(/\d/g, function (d) {
+return FA[+ d];
+});
+}
+
+var header = document.getElementById('header');
+function onScroll() {
+header.classList.toggle('scrolled', window.scrollY > 12);
+}
+window.addEventListener('scroll', onScroll, {passive: true});
+onScroll();
+
+var navToggle = document.getElementById('navToggle');
+var navLinks = document.getElementById('navLinks');
+if (navToggle) {
+navToggle.addEventListener('click', function () {
+navLinks.classList.toggle('open');
+});
+navLinks.addEventListener('click', function (e) {
+if (e.target.tagName === 'A') 
+navLinks.classList.remove('open');
+
+
+
+});
+}
+
+
+var sections = [
+'hero',
+'features',
+'why',
+'download',
+'contact'
+];
+var links = Array.prototype.slice.call(document.querySelectorAll('.nav-links a'));
+function syncActive() {
+var y = window.scrollY + 120,
+cur = 'hero';
+sections.forEach(function (id) {
+var el = document.getElementById(id);
+if (el && el.offsetTop <= y) 
+cur = id;
+
+
+
+});
+links.forEach(function (a) {
+a.classList.toggle('active', a.getAttribute('href') === '#' + cur);
+});
+}
+window.addEventListener('scroll', syncActive, {passive: true});
+syncActive();
+
+var reduce = window.matchMedia('(prefers-reduced-motion: reduce)').matches;
+var reveals = Array.prototype.slice.call(document.querySelectorAll('.reveal'));
+function inView(el) {
+var r = el.getBoundingClientRect();
+return r.top<(window.innerHeight||document.documentElement.clientHeight)-30 && r.bottom> 0;
+}
+function reveal(el) {
+el.classList.add('in');
+}
+
+if (reduce) {
+reveals.forEach(reveal);
+} else {
+reveals.forEach(function (el) {
+if (inView(el)) 
+reveal(el);
+
+
+
+});
+if ('IntersectionObserver' in window) {
+var io = new IntersectionObserver(function (es) {
+es.forEach(function (e) {
+if (e.isIntersecting) {
+reveal(e.target);
+io.unobserve(e.target);
+}
+});
+}, {
+threshold: 0.12,
+rootMargin: '0px 0px -40px 0px'
+});
+reveals.forEach(function (el) {
+if (! el.classList.contains('in')) 
+io.observe(el);
+
+
+
+});
+}
+var ticking = false;
+function sweep() {
+if (ticking) 
+return;
+
+
+
+ticking = true;
+requestAnimationFrame(function () {
+reveals.forEach(function (el) {
+if (inView(el)) 
+reveal(el);
+
+
+
+});
+ticking = false;
+});
+}
+window.addEventListener('scroll', sweep, {passive: true});
+window.addEventListener('resize', sweep, {passive: true});
+setTimeout(function () {
+reveals.forEach(reveal);
+}, 2800);
+}
+
+// نماد اعتماد الکترونیکی (Enamad) — فقط بعد از لود کامل صفحه تزریق می‌شود تا
+// درخواست تصویرِ دامنه‌ی بیرونی با منابع خود سایت رقابت نکند و سرعت لود پایین نیاید.
+function mountEnamad() {
+var slot = document.getElementById('enamad-seal');
+if (! slot) 
+return;
+
+
+
+var a = document.createElement('a');
+a.setAttribute('referrerpolicy', 'origin');
+a.target = '_blank';
+a.href = 'https://trustseal.enamad.ir/?id=755841&Code=8sNSk0yrUE7EgbY9k5xkqTE0LaeXIaq4';
+var img = document.createElement('img');
+img.setAttribute('referrerpolicy', 'origin');
+img.src = 'https://trustseal.enamad.ir/logo.aspx?id=755841&Code=8sNSk0yrUE7EgbY9k5xkqTE0LaeXIaq4';
+img.alt = 'نماد اعتماد الکترونیکی';
+img.style.cursor = 'pointer';
+img.setAttribute('code', '8sNSk0yrUE7EgbY9k5xkqTE0LaeXIaq4');
+img.loading = 'lazy';
+a.appendChild(img);
+slot.appendChild(a);
+}
+if (document.readyState === 'complete') {
+mountEnamad();
+} else {
+window.addEventListener('load', mountEnamad);
+}
+})();
+		</script>