feat: Implement comprehensive error handling and production deployment pipeline

## Error Handling System
- Add centralized error handling utilities (errorHandler.ts)
- Create reusable error components (ErrorMessage, ErrorToast)
- Implement multilingual error support (preserves backend error messages in 5 languages)
- Update 15+ forms and components with consistent error handling
  - Auth forms: login, register, forgot-password
  - Family management: family page, join family dialog
  - Child management: child dialog
  - All tracking forms: feeding, sleep, diaper, medicine, growth, activity

## Production Build Fixes
- Fix backend TypeScript errors: InviteCode.uses → InviteCode.useCount (5 instances)
- Remove non-existent savedFamily variable from registration response
- Fix admin panel TypeScript errors: SimpleMDE toolbar type, PieChart label type

## User Experience Improvements
- Auto-uppercase invite code and share code inputs
- Visual feedback for case conversion with helper text
- Improved form validation with error codes

## CI/CD Pipeline
- Create comprehensive production deployment checklist (PRODUCTION_DEPLOYMENT_CHECKLIST.md)
- Add automated pre-deployment check script (pre-deploy-check.sh)
  - Validates frontend, backend, and admin panel builds
  - Checks git status, branch, and sync state
  - Verifies environment files and migrations
- Add quick start deployment guide (DEPLOYMENT_QUICK_START.md)
- Add production deployment automation template (deploy-production.sh)

## Cleanup
- Remove outdated push notifications documentation files
- Remove outdated PWA implementation plan

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

DEPLOYMENT_QUICK_START.md

@@ -0,0 +1,219 @@
+# Production Deployment - Quick Start Guide
+
+**Last Updated**: October 9, 2025
+
+---
+
+## 🚀 Quick Deployment (5 Minutes)
+
+### On Development Server
+
+```bash
+cd /root/maternal-app
+
+# 1. Run pre-deployment checks
+./pre-deploy-check.sh
+
+# 2. Commit and push (if checks pass)
+git add .
+git commit -m "feat: describe your changes"
+git push origin main
+```
+
+### On Production Server
+
+```bash
+# SSH to production
+ssh user@production-server
+
+# Run automated deployment
+cd /var/www/maternal-app
+./deploy.sh
+
+# Monitor logs
+pm2 logs --lines 100
+```
+
+---
+
+## 📋 Manual Deployment Steps
+
+### Development Server (Pre-Deploy)
+
+1. **Test Builds**
+   ```bash
+   cd /root/maternal-app/maternal-web && npm run build
+   cd /root/maternal-app/maternal-app/maternal-app-backend && npm run build
+   ```
+
+2. **Commit Changes**
+   ```bash
+   git add .
+   git commit -m "your message"
+   git push origin main
+   ```
+
+### Production Server (Deploy)
+
+1. **Backup**
+   ```bash
+   pg_dump -U postgres -d parentflowprod -F c -f /backup/db_$(date +%Y%m%d).dump
+   ```
+
+2. **Pull Code**
+   ```bash
+   cd /var/www/maternal-app
+   git pull origin main
+   ```
+
+3. **Install & Build**
+   ```bash
+   # Frontend
+   cd maternal-web
+   npm ci --production
+   npm run build
+
+   # Backend
+   cd ../maternal-app/maternal-app-backend
+   npm ci --production
+   npm run build
+   ```
+
+4. **Migrate Database**
+   ```bash
+   cd /var/www/maternal-app/maternal-app/maternal-app-backend
+   npm run migration:run
+   ```
+
+5. **Restart Services**
+   ```bash
+   pm2 restart all
+   pm2 status
+   ```
+
+6. **Verify**
+   ```bash
+   curl http://localhost:3020/api/v1/health
+   curl http://localhost:3030
+   ```
+
+---
+
+## ⚡ Emergency Rollback
+
+```bash
+cd /var/www/maternal-app
+
+# 1. Rollback code
+git log -5 --oneline
+git reset --hard <previous-commit>
+
+# 2. Restore database
+pg_restore -U postgres -d parentflowprod -c /backup/db_YYYYMMDD.dump
+
+# 3. Rebuild & restart
+cd maternal-web && npm run build
+cd ../maternal-app/maternal-app-backend && npm run build
+pm2 restart all
+```
+
+---
+
+## 🔍 Health Checks
+
+```bash
+# Backend
+curl http://localhost:3020/api/v1/health
+
+# Frontend
+curl http://localhost:3030
+
+# PM2 Status
+pm2 status
+pm2 logs --lines 50
+
+# Database
+psql -U postgres -d parentflowprod -c "SELECT COUNT(*) FROM users;"
+```
+
+---
+
+## 📁 Important Paths
+
+**Development Server**:
+- App: `/root/maternal-app/`
+- Database: `10.0.0.207:5432/parentflowdev`
+- Scripts: `/root/maternal-app/*.sh`
+
+**Production Server**:
+- App: `/var/www/maternal-app/`
+- Database: `localhost:5432/parentflowprod`
+- Backups: `/backup/`
+- Logs: `/var/log/maternal-app-deploy-*.log`
+
+---
+
+## 🛠️ Common Issues
+
+**Build Fails**:
+```bash
+rm -rf .next node_modules/.cache dist
+npm install
+npm run build
+```
+
+**Migration Fails**:
+```bash
+# Check migration history
+npm run migration:show
+
+# Rollback last migration
+npm run migration:revert
+```
+
+**Service Won't Start**:
+```bash
+pm2 stop all
+pm2 delete all
+pm2 start ecosystem.config.js
+```
+
+**Database Connection Issues**:
+```bash
+# Check PostgreSQL is running
+systemctl status postgresql
+
+# Check connections
+psql -U postgres -c "SELECT count(*) FROM pg_stat_activity;"
+```
+
+---
+
+## 📞 Support
+
+- **Full Documentation**: See `PRODUCTION_DEPLOYMENT_CHECKLIST.md`
+- **Pre-Deploy Script**: `./pre-deploy-check.sh`
+- **Production Deploy**: Copy deploy script from checklist to production server
+
+---
+
+## ✅ Pre-Deployment Checklist (Quick)
+
+- [ ] All builds pass locally
+- [ ] Tests pass
+- [ ] Database migrations created
+- [ ] `.env` files reviewed
+- [ ] Backup created
+- [ ] Team notified (if major release)
+
+## ✅ Post-Deployment Checklist (Quick)
+
+- [ ] Health checks pass
+- [ ] Login works
+- [ ] Critical features tested
+- [ ] No errors in logs
+- [ ] PM2 processes healthy
+
+---
+
+**For detailed instructions, see `PRODUCTION_DEPLOYMENT_CHECKLIST.md`**