feat: Google Drive agency sync with auto folder match

Connect marketing@ once, match Drive folders to tenants by name,
list Drive in Activos, and mirror portal uploads to the linked folder.

Co-authored-by: Cursor <cursoragent@cursor.com>

src/components/ClientIntegrationsPanel.tsx

@@ -78,6 +78,7 @@ export default function ClientIntegrationsPanel({
     { id: 'analytics', title: 'Analítica y medición' },
     { id: 'crm', title: 'CRM' },
     { id: 'email', title: 'Email / lifecycle' },
+    { id: 'files', title: 'Archivos' },
   ];
 
   return (