feat(ServerGroupCard): implement group selection functionality and improve selection indicator logic

frontend/src/components/server/ServerGroupCard.jsx

@@ -5,7 +5,6 @@ import {
   IconChevronUp,
   IconRouter,
   IconCircleCheck,
-  IconSquare,
   IconNetwork,
   IconCloud
 } from '@tabler/icons-react';
@@ -41,6 +40,15 @@ export default function ServerGroupCard({
   const tunnel = first?.tunnel;
   const wanCount = servers.length;
   const anySelected = servers.some((s) => selectedSet.has(s.ip));
+  const allSelected = servers.length > 0 && servers.every((s) => selectedSet.has(s.ip));
+
+  const handleGroupSelect = () => {
+    servers.forEach((s) => {
+      const selected = selectedSet.has(s.ip);
+      if (allSelected && selected) onSelect?.(s);
+      if (!allSelected && !selected) onSelect?.(s);
+    });
+  };
 
   return (
     <div
@@ -64,11 +72,11 @@ export default function ServerGroupCard({
               borderBottomLeftRadius: expanded ? '0' : (anySelected ? '10px' : '11px'),
               cursor: 'pointer'
             }}
-            onClick={() => onSelect?.(first)}
+            onClick={handleGroupSelect}
           >
             <div className="text-center">
               <div className="mb-1">
-                {anySelected ? (
+                {allSelected ? (
                   <IconCircleCheck size={20} className="text-green" />
                 ) : (
                   <IconRouter size={20} className="text-green" />
@@ -171,27 +179,27 @@ export default function ServerGroupCard({
                     className={`d-flex align-items-stretch rounded mb-1 overflow-hidden ${isSelected ? 'bg-primary-lt' : 'bg-white'}`}
                     style={{ boxShadow: '0 0 0 1px rgba(0,0,0,0.06)' }}
                   >
-                    {/* Бейдж HOME у вложенного роутера */}
+                    {/* Бейдж HOME — клик как у обычной карточки, без явной галочки */}
                     <div
                       className="d-flex align-items-center justify-content-center bg-green-lt text-green px-2"
-                      style={{ minWidth: '52px', fontSize: '0.6rem', fontWeight: 700, letterSpacing: '0.5px' }}
+                      style={{
+                        minWidth: '52px',
+                        fontSize: '0.6rem',
+                        fontWeight: 700,
+                        letterSpacing: '0.5px',
+                        cursor: 'pointer'
+                      }}
+                      onClick={() => onSelect?.(server)}
+                      title={isSelected ? 'Снять выбор' : 'Выбрать'}
                     >
-                      <IconRouter size={14} className="me-1" />
+                      {isSelected ? (
+                        <IconCircleCheck size={14} className="me-1" />
+                      ) : (
+                        <IconRouter size={14} className="me-1" />
+                      )}
                       HOME
                     </div>
                     <div className="d-flex align-items-center flex-grow-1 py-2 px-2 min-w-0">
-                      <button
-                        type="button"
-                        className="btn btn-ghost-secondary btn-icon btn-sm p-0 me-2 flex-shrink-0"
-                        onClick={() => onSelect?.(server)}
-                        title={isSelected ? 'Снять выбор' : 'Выбрать'}
-                      >
-                        {isSelected ? (
-                          <IconCircleCheck size={18} className="text-primary" />
-                        ) : (
-                          <IconSquare size={18} className="text-muted" />
-                        )}
-                      </button>
                       <span className="me-2 flex-shrink-0" style={{ fontSize: '1.1rem' }}>{countryToFlag(server.country)}</span>
                       <div className="min-w-0">
                         <span className="fw-medium">{serverName}</span>