feat: database backups & analytics site management

- Added manual database backup functionality with pg_dump
- Added cron-based automated backups to Google Drive and Dropbox
- Added ability to manually add, edit, and delete sites in Analytics
- Added 1-day timeframe filter in Analytics page
- Updated Dockerfile to include postgresql-client

package.json

@@ -14,6 +14,7 @@
     "jose": "^6.2.3",
     "lucide-react": "^1.16.0",
     "next": "16.2.6",
+    "node-cron": "^4.2.1",
     "pg": "^8.21.0",
     "react": "19.2.4",
     "react-dom": "19.2.4"
@@ -21,6 +22,7 @@
   "devDependencies": {
     "@tailwindcss/postcss": "^4",
     "@types/node": "^20",
+    "@types/node-cron": "^3.0.11",
     "@types/react": "^19",
     "@types/react-dom": "^19",
     "eslint": "^9",