Setup docs drift: DATABASE_URL and NODE_ENV missing from README environment setup

[ariesadonis]

Hi — found a concrete contributor onboarding gap while comparing config files against docs:

.env.example:2-125 defines DATABASE_URL and NODE_ENV as required for local dev — README.md:92-94 mentions neither

A new contributor clones the repo, misses these vars, and hits connection failures on first run with no clear pointer to what's missing.

Proposed fix — add to the Environment Setup section in README.md:

DATABASE_URL=postgresql://...
NODE_ENV=development

Happy to open a PR if confirmed.