fix(check): SPDX license string; E501 off in tests (device-types pilot)

The pilot's build warned that setuptools refuses a license table and
License classifiers from 2027-02-18 (PEP 639); check now reports both and
the template builds with setuptools>=77. Recorded device output in tests
keeps its lines, so the template turns E501 off under tests/.

CHANGELOG.md

@@ -5,6 +5,13 @@ The format follows [Keep a Changelog](https://keepachangelog.com/), versions fol
 
 ## [Unreleased]
 
+### Changed
+- `check` reports a license given as a TOML table or as a `License ::` classifier:
+  setuptools refuses both from 2027-02-18 (PEP 639). The template builds with
+  setuptools>=77.
+- E501 is off under `tests/`: recorded device output keeps its lines (found in the
+  device-types pilot).
+
 ## [0.1.0] - 2026-10-22
 
 ### Added