fix(ui): 统一 LSP 指示器按钮样式与工具栏其他按钮一致

packages/ui/src/components/DiagnosticsIndicator.tsx

@@ -158,13 +158,13 @@ export function DiagnosticsIndicator({
         size="sm"
         onClick={onClickLSP}
         className={cn(
-          'flex items-center gap-1 px-2 py-1 h-auto min-h-0',
+          'flex items-center gap-1 p-1.5 h-auto min-h-0',
-          'hover:bg-surface-base/50 transition-colors',
+          'hover:bg-surface-muted transition-colors',
-          runningServers > 0 ? 'text-green-400' : 'text-fg-subtle'
+          runningServers > 0 ? 'text-green-400' : 'text-fg-muted hover:text-fg-secondary'
         )}
         title={`${runningServers} Language Server${runningServers !== 1 ? 's' : ''} Running`}
       >
-        <Code2 size={14} />
+        <Code2 size={20} />
         {runningServers > 0 && <span className="text-xs font-medium">{runningServers}</span>}
       </Button>
     </div>