Add MIT LICENSE and SPDX license metadata

pyproject.toml

@@ -4,13 +4,14 @@ version = "2026.10.25"
 description = "MCP server for Nuand BladeRF SDR control via SoapySDR"
 authors = [{name = "Ryan Malloy", email = "ryan@supported.systems"}]
 readme = "README.md"
+license = "MIT"
+license-files = ["LICENSE"]
 requires-python = ">=3.11"
 keywords = ["mcp", "sdr", "bladerf", "soapysdr", "radio"]
 classifiers = [
     "Development Status :: 4 - Beta",
     "Intended Audience :: Developers",
     "Intended Audience :: Science/Research",
-    "License :: OSI Approved :: MIT License",
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
     "Topic :: Communications :: Ham Radio",