release: prepare v1.3.0

version.py

@@ -0,0 +1,20 @@
+"""Package version resolved from installed metadata or the source pyproject."""
+
+from __future__ import annotations
+
+import tomllib
+from importlib.metadata import PackageNotFoundError, version
+from pathlib import Path
+
+
+def package_version() -> str:
+    """Return the canonical project version without a duplicate constant."""
+    try:
+        return version("autocad-mcp-pro")
+    except PackageNotFoundError:
+        pyproject = Path(__file__).with_name("pyproject.toml")
+        with pyproject.open("rb") as stream:
+            return str(tomllib.load(stream)["project"]["version"])
+
+
+__version__ = package_version()