Set prerelease version to 0.2.0rc.1

Author: rudolffu

euclidkit/version.py

@@ -1,10 +1,18 @@
 """Version information for euclidkit package."""
 
-__version__ = "0.2.0rc1"
-__version_info__ = tuple(int(x) for x in __version__.split("."))
+import re
+
+__version__ = "0.2.0rc.1"
+
+# Extract numeric release tuple from PEP 440 versions (e.g. 0.2.0rc1 -> (0, 2, 0)).
+_release_match = re.match(r"^(\d+)\.(\d+)\.(\d+)", __version__)
+if _release_match:
+    __version_info__ = tuple(int(x) for x in _release_match.groups())
+else:
+    __version_info__ = (0, 0, 0)
 
 # Version metadata
 __author__ = "Yuming Fu"
 __email__ = "fuympku@outlook.com"
 __license__ = "GPLv3"
-__copyright__ = "Copyright 2026, Yuming Fu"
+__copyright__ = "Copyright 2026, Yuming Fu"