feat: Complete production deployment pipeline with admin dashboard

- Add unified deployment script with Node.js 22 installation
- Create comprehensive database migration script (28 migrations + admin tables)
- Add production start/stop scripts for all services
- Integrate admin dashboard (parentflow-admin) into PM2 ecosystem
- Configure all services: Backend (3020), Frontend (3030), Admin (3335)
- Update ecosystem.config.js with admin dashboard configuration
- Add invite codes module for user registration management

parentflow-admin/package.json

@@ -0,0 +1,34 @@
+{
+  "name": "parentflow-admin",
+  "version": "0.1.0",
+  "private": true,
+  "scripts": {
+    "dev": "next dev -p 3335 -H 0.0.0.0",
+    "build": "next build",
+    "start": "next start -p 3335"
+  },
+  "dependencies": {
+    "@emotion/react": "^11.14.0",
+    "@emotion/styled": "^11.14.1",
+    "@mui/icons-material": "^7.3.4",
+    "@mui/material": "^7.3.4",
+    "@mui/material-nextjs": "^7.3.3",
+    "@mui/x-charts": "^8.13.1",
+    "@mui/x-data-grid": "^8.13.1",
+    "@tanstack/react-query": "^5.90.2",
+    "axios": "^1.12.2",
+    "date-fns": "^4.1.0",
+    "next": "15.5.4",
+    "react": "19.1.0",
+    "react-dom": "19.1.0",
+    "recharts": "^3.2.1"
+  },
+  "devDependencies": {
+    "@tailwindcss/postcss": "^4",
+    "@types/node": "^20",
+    "@types/react": "^19",
+    "@types/react-dom": "^19",
+    "tailwindcss": "^4",
+    "typescript": "^5"
+  }
+}