feat(s2a): Improve group display layout with grid-based cards

- Replace badge-style group display with grid-based card layout for better readability
- Add group name and ID display in selected groups section with truncation handling
- Reorganize profile card group summary to use dedicated grid section below parameters
- Remove inline group information from parameter summary badge
- Improve visual hierarchy and spacing in group display components
- Enhance dark mode styling for group cards with better contrast and borders

frontend/src/pages/S2AConfig.tsx

@@ -420,9 +420,8 @@ export default function S2AConfig() {
                             <Input label="默认优先级" type="number" min={0} max={100} value={formPriority} onChange={(e) => setFormPriority(Number(e.target.value))} hint="数值越大优先级越高" />
                         </div>
                         <div className="space-y-3">
-                            {/* 标题 + 获取按钮 */}
-                            <div className="flex items-center justify-between">
-                                <label className="block text-sm font-medium text-slate-700 dark:text-slate-300">分组</label>
+                            {/* 获取按钮 */}
+                            <div className="flex items-center justify-end">
                                 <Button
                                     variant="outline"
                                     onClick={handleFetchGroups}
@@ -437,15 +436,21 @@ export default function S2AConfig() {
                                 <p className="text-xs text-slate-400">请先填写 S2A API 地址和 Admin Key，再获取分组列表</p>
                             ) : null}
 
-                            {/* 已选分组 badges */}
-                            <div className="flex flex-wrap gap-2">
-                                {formGroupIds.map(id => (
-                                    <span key={id} className="inline-flex items-center gap-1.5 px-3 py-1 rounded-full text-sm bg-blue-100 text-blue-700 dark:bg-blue-900/30 dark:text-blue-400">
-                                        {getGroupLabel(id)}
-                                        <button onClick={() => handleRemoveGroupId(id)} className="hover:text-red-500 transition-colors"><X className="h-3 w-3" /></button>
-                                    </span>
-                                ))}
-                                {formGroupIds.length === 0 && <span className="text-sm text-slate-400">未选择分组</span>}
+                            {/* 已选分组 */}
+                            <div className="grid grid-cols-2 sm:grid-cols-3 gap-2">
+                                {formGroupIds.map(id => {
+                                    const group = availableGroups.find(g => g.id === id)
+                                    return (
+                                        <div key={id} className="flex items-center justify-between px-3 py-2 rounded-lg bg-blue-50 dark:bg-blue-900/20 border border-blue-100 dark:border-blue-800/40">
+                                            <div className="flex flex-col min-w-0">
+                                                <span className="text-sm font-medium text-blue-700 dark:text-blue-300 truncate">{group ? group.name : `#${id}`}</span>
+                                                {group && <span className="text-[10px] text-blue-400 dark:text-blue-500">#{id}</span>}
+                                            </div>
+                                            <button onClick={() => handleRemoveGroupId(id)} className="ml-2 text-blue-400 hover:text-red-500 transition-colors flex-shrink-0"><X className="h-3.5 w-3.5" /></button>
+                                        </div>
+                                    )
+                                })}
+                                {formGroupIds.length === 0 && <span className="text-sm text-slate-400 col-span-full">未选择分组</span>}
                             </div>
 
                             {/* 可选分组列表 */}
@@ -621,18 +626,13 @@ function ProfileCard({ profile, isActive, isActivating, groupNameCache, onActiva
                 </div>
 
                 {/* 参数摘要 */}
-                <div className="flex flex-wrap gap-1.5 mb-4">
+                <div className="flex flex-wrap gap-1.5 mb-2">
                     <span className="inline-flex items-center px-2 py-0.5 rounded text-xs bg-slate-100 text-slate-600 dark:bg-slate-700 dark:text-slate-300">
                         并发 {profile.concurrency}
                     </span>
                     <span className="inline-flex items-center px-2 py-0.5 rounded text-xs bg-slate-100 text-slate-600 dark:bg-slate-700 dark:text-slate-300">
                         优先级 {profile.priority}
                     </span>
-                    {parsedGroups.length > 0 && (
-                        <span className="inline-flex items-center px-2 py-0.5 rounded text-xs bg-blue-50 text-blue-600 dark:bg-blue-900/30 dark:text-blue-400">
-                            分组 {parsedGroups.map(id => groupNameCache[id] ? `${groupNameCache[id]} #${id}` : `#${id}`).join(', ')}
-                        </span>
-                    )}
                     {profile.proxy_enabled && (
                         <span className="inline-flex items-center px-2 py-0.5 rounded text-xs bg-orange-50 text-orange-600 dark:bg-orange-900/30 dark:text-orange-400">
                             <Globe className="h-3 w-3 mr-0.5" /> 代理
@@ -640,6 +640,18 @@ function ProfileCard({ profile, isActive, isActivating, groupNameCache, onActiva
                     )}
                 </div>
 
+                {/* 分组列表 */}
+                {parsedGroups.length > 0 && (
+                    <div className="grid grid-cols-2 gap-2 mb-4">
+                        {parsedGroups.map(id => (
+                            <div key={id} className="flex flex-col px-2.5 py-1.5 rounded-lg bg-blue-50 dark:bg-blue-900/20 border border-blue-100 dark:border-blue-800/40">
+                                <span className="text-xs font-medium text-blue-700 dark:text-blue-300 truncate">{groupNameCache[id] || `#${id}`}</span>
+                                {groupNameCache[id] && <span className="text-[10px] text-blue-400 dark:text-blue-500">#{id}</span>}
+                            </div>
+                        ))}
+                    </div>
+                )}
+
                 {/* 操作按钮 */}
                 <div className="flex items-center gap-2">
                     {!isActive ? (