feat: Enhance CommunitiesManager and FilterManager with improved tab styling and query parameter prefill functionality for better user experience and server selection.

frontend/src/CommunitiesManager.jsx

@@ -403,10 +403,10 @@ function CommunitiesManager() {
             </div>
           )}
 
-          {/* Вкладки: Список / Статистика */}
+          {/* Вкладки: Список / Статистика в стиле Tabler */}
           <div className="card mb-3">
-            <div className="card-body p-2">
-              <ul className="nav nav-tabs nav-tabs-bg" role="tablist">
+            <div className="card-header border-0 pb-0">
+              <ul className="nav nav-tabs card-header-tabs" role="tablist">
                 <li className="nav-item" role="presentation">
                   <button
                     className={`nav-link ${activeTab === 'list' ? 'active' : ''}`}
@@ -417,6 +417,7 @@ function CommunitiesManager() {
                   >
                     <IconList className="me-2" size={18} />
                     Список communities
+                    <span className="badge bg-blue-lt text-blue ms-2">{filtered.length}</span>
                   </button>
                 </li>
                 <li className="nav-item" role="presentation">

frontend/src/FilterManager.jsx

@@ -70,14 +70,31 @@ function FilterManager() {
   const [sortBy, setSortBy] = useState('community'); // community | gateway | description
   const [sortDir, setSortDir] = useState('asc'); // asc | desc
 
-  // Префилл поиска из query-параметра ?community=...
+  // Префилл из query (?community=..., ?serverId=..., ?server=...) и автоселект сервера
+  const prefillAppliedRef = useRef(false);
   useEffect(() => {
+    if (prefillAppliedRef.current) return;
     const params = new URLSearchParams(window.location.search);
     const communityFromQuery = params.get('community');
+    const serverIdFromQuery = params.get('serverId');
+    const serverNameFromQuery = params.get('server');
+
     if (communityFromQuery) {
       setFilterSearch(communityFromQuery);
     }
-  }, []);
+
+    if (servers.length > 0) {
+      let target =
+        (serverIdFromQuery && servers.find((s) => s.id === serverIdFromQuery)) ||
+        (serverNameFromQuery && servers.find((s) => s.name === serverNameFromQuery)) ||
+        servers.find((s) => s.enabled) ||
+        servers[0];
+      if (target) {
+        setSelectedServer(target);
+      }
+      prefillAppliedRef.current = true;
+    }
+  }, [servers]);
   
   // Состояние управления серверами
   const [serverListModalOpen, setServerListModalOpen] = useState(false);