security: fix faucet rate limiting, backup key permissions, and ECDSA signature exposure#115

Copilot wants to merge 2 commits intomainnumbersprotocol/numbers-network:mainfrom

copilot/fix-faucet-nginx-rate-limitingnumbersprotocol/numbers-network:copilot/fix-faucet-nginx-rate-limitingCopy head branch name to clipboard