start-bridge.bat (Windows) and start-bridge.command (macOS/Linux, +x) sit
next to bridge.py in both parts so readers can start the bridge with a
double-click. READMEs now cover the launchers and the ledtest.py debug path.
Self-contained project code for the "Godot Isn't Just for Games" series:
Arduino sketches, the Python serial<->UDP bridge, and the Godot 4 projects,
one folder per article.