feat: Add major features - Mejoras 5-10

- Mejora 5: Órdenes de Compra integration in obra detail
- Mejora 6: Portal de Cliente with JWT auth for clients
- Mejora 7: Diagrama de Gantt for project visualization
- Mejora 8: Push Notifications with service worker
- Mejora 9: Activity Log system with templates
- Mejora 10: PWA support with offline capabilities

New features include:
- Fotos gallery with upload/delete
- Bitácora de obra with daily logs
- PDF export for reports, gastos, presupuestos
- Control de asistencia for employees
- Client portal with granular permissions
- Gantt chart with task visualization
- Push notification system
- Activity timeline component
- PWA manifest, icons, and install prompt

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

package.json

@@ -34,14 +34,18 @@
     "@radix-ui/react-select": "^2.1.2",
     "@radix-ui/react-separator": "^1.1.0",
     "@radix-ui/react-slot": "^1.1.0",
+    "@radix-ui/react-switch": "^1.2.6",
     "@radix-ui/react-tabs": "^1.1.1",
     "@radix-ui/react-toast": "^1.2.2",
     "@radix-ui/react-tooltip": "^1.1.3",
+    "@react-pdf/renderer": "^4.3.2",
     "autoprefixer": "^10.4.23",
     "bcryptjs": "^2.4.3",
     "class-variance-authority": "^0.7.0",
     "clsx": "^2.1.1",
     "date-fns": "^3.6.0",
+    "gantt-task-react": "^0.3.9",
+    "jose": "^6.1.3",
     "lucide-react": "^0.454.0",
     "next": "^14.2.28",
     "next-auth": "^5.0.0-beta.25",
@@ -51,6 +55,7 @@
     "recharts": "^2.13.0",
     "tailwind-merge": "^2.5.4",
     "tailwindcss-animate": "^1.0.7",
+    "web-push": "^3.6.7",
     "zod": "^3.23.8"
   },
   "devDependencies": {
@@ -58,6 +63,7 @@
     "@types/node": "^20.17.6",
     "@types/react": "^18.3.12",
     "@types/react-dom": "^18.3.1",
+    "@types/web-push": "^3.6.4",
     "eslint": "^8.57.1",
     "eslint-config-next": "^14.2.28",
     "postcss": "^8.4.47",