feat(F-050): completed feature

project/apps/admin/src/app/(dashboard)/page.tsx

@@ -98,13 +98,16 @@ export default function DashboardPage() {
     api
       .get<Stats>('/api/admin/stats')
       .then(setStats)
-      .catch(() => setError('No se pudieron cargar las estadísticas'))
+      .catch((err) => {
+        const code = err instanceof Error ? err.message : 'Error';
+        setError(`No se pudieron cargar las estadísticas (${code})`);
+      })
       .finally(() => setLoading(false));
   }, []);
 
   if (loading) {
     return (
-      <div className="p-8 space-y-6">
+      <div className="space-y-6">
         <div className="grid grid-cols-2 lg:grid-cols-4 gap-4">
           {[...Array(4)].map((_, i) => (
             <div key={i} className="bg-white border border-gray-200 rounded-xl p-5 animate-pulse">
@@ -127,7 +130,7 @@ export default function DashboardPage() {
 
   if (error || !stats) {
     return (
-      <div className="p-8">
+      <div>
         <div className="bg-red-50 border border-red-200 rounded-xl p-4 text-sm text-red-700">
           {error ?? 'Error desconocido'}
         </div>
@@ -141,7 +144,7 @@ export default function DashboardPage() {
   );
 
   return (
-    <div className="p-8 space-y-6">
+    <div className="space-y-6">
       {/* KPI Cards */}
       <div className="grid grid-cols-2 lg:grid-cols-4 gap-4">
         <KPICard