DECNET had no LICENSE file and no license metadata in pyproject.toml
despite intent being GPLv3. Legally that meant the code was "all
rights reserved" by default, so anyone distributing it (including via
GitHub clones, mirrors, or the forthcoming swarm enroll bundles) was
technically in violation even though the operator's own intent was
copyleft.
- Add canonical GPL-3.0 text from gnu.org/licenses/gpl-3.0.txt as
LICENSE (verbatim, 674 lines).
- Add license = "GPL-3.0-or-later" and license-files = ["LICENSE"]
to pyproject.toml [project] (SPDX identifier per PEP 639).
- Add the matching OSI classifier plus a few other standard ones
(Python 3.11, Linux, Security, Network Monitoring, Beta) that
pyproject was silently missing.
Prereq for the forthcoming p0f-db vendoring: establishing DECNET's
own license explicitly closes the first question an auditor would
ask about any third-party data we embed.
