Every list of three or more takes the serial comma: the one-liner in
pyproject.toml, meshterm/__init__.py, and --help ("USB, Bluetooth, or TCP",
"Windows, macOS, and Linux"), the README, the changelog, the manuals, the
issue and PR templates, and six strings the app shows (the region-name
rule, a repeater setting's help, the diagnostics tool's description, and
the archive confirms). The Windows-console notice is rewrapped so its
comma keeps it inside 72 columns.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>