Edge Function Cold Starts Causing Slow First Invocation

1. Large dependencies increasing cold start
2. Long initialization code running at import time
3. Function not called for extended period (idle timeout)
4. Too many imports for simple operation
5. No keep-alive mechanism to prevent cold starts

Minimize cold start by reducing dependencies:

// Bad - large import
import { everything } from 'lodash';

// Good - specific import
import { debounce } from 'lodash';

Use keep-alive service to ping function every 5 minutes. Move heavy initialization into handler function, not module scope.