feat(user-view): add Details (Ficha) tab as default with basic info + access validity

New 'Ficha' tab (first, default) on the user view: basic info card
(name/username/email/phone/address/member since) plus the 'Validez de acceso'
card and the Empresa card, moved here from the Permissions tab. The Permissions
tab now focuses on roles + the direct-permissions form.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

app/Livewire/UserView.php

@@ -16,7 +16,7 @@ use Spatie\Permission\PermissionRegistrar;
 class UserView extends Component
 {
     public User   $user;
-    public string $activeTab = 'permissions';
+    public string $activeTab = 'ficha';
 
     // Projects tab
     public ?int   $addProjectId   = null;