fix: update author email to alex@nwave.ai (nwave.ai domain SSOT)

Was alessandro.digioia@brix.consulting (consulting brand). The author
email lands in the package metadata on PyPI permanently — using the
nwave.ai domain reflects the project's ownership correctly.

PyPI account email (separate field, used for login + verification)
remains alex.digioia@gmail.com.

Author: 11PJ11

pyproject.toml

@@ -10,7 +10,7 @@ readme = "README.md"
 license = {text = "MIT"}
 requires-python = ">=3.10"
 authors = [
-    { name = "Alessandro Di Gioia", email = "alessandro.digioia@brix.consulting" },
+    { name = "Alessandro Di Gioia", email = "alex@nwave.ai" },
 ]
 keywords = [
     "code-quality",