feat(mejoras): 14 mejoras al CRM Frasa

Fase 1 - UI: dark mode, skeletons, toasts
Fase 2 - Filtros: avanzados Mi día, búsqueda global Ctrl+K
Fase 3 - Datos: export Excel, notas apartados, auditoría
Fase 4 - Dashboard: gráficas vendedor + métricas uso
Fase 5 - Responsive: tablets optimizadas
Fase 6 - PWA: IndexedDB offline, push notifications

Backend: 3 tablas nuevas, 6 services, 6 endpoints nuevos
721 API tests + fronts verdes.

apps/cobranza/package.json

@@ -14,9 +14,11 @@
     "@hookform/resolvers": "^3.9.1",
     "jspdf": "^2.5.2",
     "jspdf-autotable": "^3.8.4",
+    "lucide-react": "^1.41.0",
     "react": "^19.0.0",
     "react-dom": "^19.0.0",
     "react-hook-form": "^7.54.2",
+    "react-hot-toast": "^2.6.0",
     "react-router-dom": "^7.1.1",
     "recharts": "^2.15.0",
     "zod": "^3.24.1"