refactor: polish spacing details (Phase 3 - Low-Impact)

frontend/components/admin/DatabaseManager.tsx

@@ -36,7 +36,7 @@ export default function DatabaseManager({
   return (
     <div className="space-y-4 md:space-y-5 h-full">
       <div data-testid="database-info" className="bg-surface/50 border border-slate-800/50 rounded-[2.5rem] p-4 md:p-6 shadow-2xl overflow-hidden relative group transition-all">
-        <div className="flex items-center gap-4 mb-6">
+        <div className="flex items-center gap-4 mb-4">
           <div className="w-10 h-10 rounded-xl bg-primary/10 flex items-center justify-center text-primary border border-primary/20">
             <Database size={20} />
           </div>