Eddycoin Node for macOS - EXPERIMENTAL, test coin only, no real money. No wallet, no private keys inside.

1. Unzip, open the folder "Eddycoin Node (Mac)", double-click "Eddycoin Node.command".
   First time macOS may block it: right-click -> Open -> Open (or System Settings -> Privacy & Security -> Open Anyway).
2. Needs Python 3.10+ from python.org (or Homebrew python-tk). If none is found, the launcher tells you and
   opens python.org. The first start creates a small private environment (.venv-node, only "certifi" for HTTPS).
3. The node starts by itself, downloads and checks the E-Chain, D-Chain and Y-Chain and connects to other nodes
   (seed server, gossip, nodes in your home network). Miners / wallet can use http://127.0.0.1:8770.
Chain data: ~/.eddycoin_node .  Without a window:  "Eddycoin Node.command" --headless
Not tested on a real Mac yet (built and tested on Linux).
