Adds minor publishing update to toml, and updates gitignore.

Author: incrementaliser

.gitignore

@@ -36,6 +36,9 @@ env/
 # uv (project-local cache if present)
 .uv/
 
+# Local secrets (e.g. PyPI token for publishing)
+.env
+
 # Testing / coverage
 .pytest_cache/
 .coverage

pyproject.toml

@@ -60,3 +60,7 @@ pythonpath = ["src"]
 [tool.ruff]
 line-length = 100
 target-version = "py313"
+
+# Skip uploading dist files that already exist on PyPI (avoids 400 file name reuse).
+[tool.uv]
+check-url = "https://pypi.org/simple"