Migrate UI to Lucide icons, reorder sidebar, and polish journal/groups UX

- Replace emoji icons with Lucide across admin pages; add vendor/lucide.min.js and renderIcons() helper\n- Reorder sidebar logically (Dashboard, Journal, Students, Groups, Files, Links, Trash + admin sections)\n- Groups: open photo chronology only via the Фото button; covers no longer clickable\n- Journal: show group badge over card photo, compact AI-status icon beside description, and date range in empty-state message\n- Update README (AI worker, Lucide, worker.js)

public/admin.js

@@ -41,20 +41,20 @@ function buildSidebar(active) {
   const el = document.getElementById('sidebar');
   if (!el) return;
   const base = [
-    { page: 'dashboard', label: 'Дашборд' },
-    { page: 'journal', label: 'Журнал' },
-    { page: 'trash', label: 'Корзина' },
-    { page: 'files', label: 'Файлы' },
-    { page: 'links', label: 'Ссылки' },
-    { page: 'students', label: 'Ученики' },
-    { page: 'groups', label: 'Группы' },
+    { page: 'dashboard', label: 'Дашборд', icon: 'layout-dashboard' },
+    { page: 'journal', label: 'Журнал', icon: 'book-open' },
+    { page: 'students', label: 'Ученики', icon: 'graduation-cap' },
+    { page: 'groups', label: 'Группы', icon: 'users' },
+    { page: 'files', label: 'Файлы', icon: 'folder' },
+    { page: 'links', label: 'Ссылки', icon: 'link' },
+    { page: 'trash', label: 'Корзина', icon: 'trash-2' },
   ];
   const adminNav = [
-    { page: 'branches', label: 'Филиалы' },
-    { page: 'users', label: 'Пользователи' },
-    { page: 'audit', label: 'Аудит' },
-    { page: 'worker', label: 'Воркер ИИ' },
-    { page: 'settings', label: 'Настройки' },
+    { page: 'branches', label: 'Филиалы', icon: 'building-2' },
+    { page: 'users', label: 'Пользователи', icon: 'user-cog' },
+    { page: 'worker', label: 'Воркер ИИ', icon: 'bot' },
+    { page: 'audit', label: 'Аудит', icon: 'scroll-text' },
+    { page: 'settings', label: 'Настройки', icon: 'settings' },
   ];
   const nav = [...base, ...(isAdmin() ? adminNav : [])];
   const userName = currentUser?.name || currentUser?.username || '';
@@ -66,15 +66,22 @@ function buildSidebar(active) {
       <div class="user-role">${roleLabel}</div>
     </div>
     <nav>
-      ${nav.map(n => `<a href="${n.page}.html" class="${n.page === active ? 'active' : ''}">${n.label}</a>`).join('')}
+      ${nav.map(n => `<a href="${n.page}.html" class="${n.page === active ? 'active' : ''}"><i data-lucide="${n.icon}"></i>${n.label}</a>`).join('')}
     </nav>
     <div class="bottom">
-      <a href="/">На главную</a>
-      <a class="logout" href="#" data-action="logout">Выйти</a>
+      <a href="/"><i data-lucide="home"></i>На главную</a>
+      <a class="logout" href="#" data-action="logout"><i data-lucide="log-out"></i>Выйти</a>
     </div>`;
+  renderIcons();
 }
 
 // --- Common UI ---
+function renderIcons() {
+  if (window.lucide && typeof window.lucide.createIcons === 'function') {
+    window.lucide.createIcons();
+  }
+}
+
 function showToast(msg) {
   const t = document.getElementById('toast');
   if (!t) return;