Improve project discoverability: PyPI classifiers, CI badge, GitHub topics

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: flyersworder

README.md

@@ -1,6 +1,7 @@
 # sqlnbfmt
 
 [![PyPI](https://img.shields.io/pypi/v/sqlnbfmt.svg)](https://pypi.org/project/sqlnbfmt/)
+[![Tests](https://github.com/flyersworder/sqlnbfmt/actions/workflows/ci-and-publish.yml/badge.svg)](https://github.com/flyersworder/sqlnbfmt/actions/workflows/ci-and-publish.yml)
 [![License](https://img.shields.io/pypi/l/sqlnbfmt.svg)](https://github.com/flyersworder/sqlnbfmt/blob/main/LICENSE)
 [![Python Versions](https://img.shields.io/pypi/pyversions/sqlnbfmt.svg)](https://pypi.org/project/sqlnbfmt/)
 

pyproject.toml

@@ -10,9 +10,16 @@ readme = "README.md"
 requires-python = ">=3.12"
 keywords = ["sql", "jupyter", "notebook", "formatter", "sqlglot", "pre-commit"]
 classifiers = [
+    "Development Status :: 4 - Beta",
+    "Intended Audience :: Developers",
+    "Intended Audience :: Science/Research",
+    "License :: OSI Approved :: MIT License",
     "Programming Language :: Python :: 3",
     "Programming Language :: Python :: 3.12",
-    "Programming Language :: Python :: 3.13"
+    "Programming Language :: Python :: 3.13",
+    "Topic :: Software Development :: Quality Assurance",
+    "Topic :: Software Development :: Libraries :: Python Modules",
+    "Framework :: Jupyter",
 ]
 dependencies = [
     "nbformat>=5.10.4",