fix: improve backup GET endpoint error handling and date parsing

frontend/src/app/api/backup/route.ts

@@ -193,24 +193,65 @@ export async function GET(request: NextRequest) {
     //   );
     // }
 
+    // Verificar se pasta existe
+    if (!fs.existsSync(BACKUP_DIR)) {
+      console.log('[BACKUP] Pasta de backups não existe, criando...');
+      fs.mkdirSync(BACKUP_DIR, { recursive: true });
+      return NextResponse.json({
+        success: true,
+        backups: [],
+        count: 0
+      });
+    }
+
     const files = fs.readdirSync(BACKUP_DIR);
     const backups: BackupInfo[] = [];
 
     for (const file of files) {
       const filePath = path.join(BACKUP_DIR, file);
-      const stat = fs.statSync(filePath);
+      
+      try {
+        const stat = fs.statSync(filePath);
 
-      if (stat.isFile()) {
-        const timestamp = file.replace('backup-', '').replace('.tar.gz', '');
-        backups.push({
-          id: file.replace('.tar.gz', ''),
-          timestamp: new Date(timestamp.replace(/-/g, ':')).toISOString(),
-          date: new Date(timestamp.replace(/-/g, ':')).toLocaleDateString('pt-BR'),
-          size: stat.size,
-          filename: file,
-          status: 'success',
-          message: 'Backup disponível'
-        });
+        if (stat.isFile() && (file.endsWith('.tar.gz') || file.includes('backup-'))) {
+          // Extrair timestamp do nome do arquivo
+          const timestamp = file
+            .replace('backup-', '')
+            .replace('.tar.gz', '')
+            .trim();
+          
+          // Tentar fazer parse da data de forma mais robusta
+          let parsedDate = new Date();
+          try {
+            // Formato esperado: 2025-11-29-10-30-45
+            const dateParts = timestamp.split('-');
+            if (dateParts.length >= 3) {
+              const year = parseInt(dateParts[0]);
+              const month = parseInt(dateParts[1]) - 1; // Mês é 0-indexed
+              const day = parseInt(dateParts[2]);
+              const hour = dateParts[3] ? parseInt(dateParts[3]) : 0;
+              const min = dateParts[4] ? parseInt(dateParts[4]) : 0;
+              const sec = dateParts[5] ? parseInt(dateParts[5]) : 0;
+              
+              parsedDate = new Date(year, month, day, hour, min, sec);
+            }
+          } catch (e) {
+            console.log('[BACKUP] Erro ao fazer parse da data:', timestamp);
+            parsedDate = new Date(stat.mtime);
+          }
+
+          backups.push({
+            id: file.replace('.tar.gz', ''),
+            timestamp: parsedDate.toISOString(),
+            date: parsedDate.toLocaleDateString('pt-BR'),
+            size: stat.size,
+            filename: file,
+            status: 'success',
+            message: 'Backup disponível'
+          });
+        }
+      } catch (fileError) {
+        console.warn('[BACKUP] Erro ao processar arquivo:', file, fileError);
       }
     }
 
@@ -227,7 +268,9 @@ export async function GET(request: NextRequest) {
     return NextResponse.json(
       {
         success: false,
-        error: (error as Error).message
+        error: (error as Error).message,
+        backups: [],
+        count: 0
       },
       { status: 500 }
     );