fix: unify creatives into Pipeline and hide Panel nav

Absorb client approval, month filters and editorial pieces into Pipeline; redirect /panel-cliente and remove duplicate menu entry.

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

src/components/DashboardShell.tsx

@@ -100,13 +100,6 @@ const NAV_ITEMS: NavItem[] = [
     iconClass: 'text-orange-500',
     moduleId: 'creatives',
   },
-  {
-    href: '/dashboard/panel-cliente',
-    label: 'Panel de Creatividades',
-    icon: Megaphone,
-    iconClass: 'text-pink-500',
-    moduleId: 'panel_cliente',
-  },
   {
     href: '/dashboard/asistente',
     label: 'Asistente IA Financiero',