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/.

template/pyproject.toml

@@ -1,5 +1,5 @@
 [build-system]
-requires = ["setuptools>=68"]
+requires = ["setuptools>=77"]
 build-backend = "setuptools.build_meta"
 
 [project]
@@ -43,6 +43,10 @@ target-version = "py310"
 [tool.ruff.lint]
 select = ["E", "F", "I", "UP", "B"]
 
+[tool.ruff.lint.per-file-ignores]
+# Recorded device output keeps its lines.
+"tests/**" = ["E501"]
+
 [tool.mypy]
 python_version = "3.10"
 strict = true