Database Connection Refused
Symptom
Error: connect ECONNREFUSED 127.0.0.1:5432
Solutions
1. Docker not running
docker ps | grep statux-postgres
# If not running:
cd statux-api && docker-compose up -d
2. Port conflict
lsof -i :5432
kill -9 <PID>
3. SSH tunnel not open (production RDS)
# In separate terminal
./scripts/tunnel.sh