Add .claude to .gitignore

Ignore Claude Code's local configuration directory.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <[email protected]>

Author: oschwald

.gitignore

@@ -71,3 +71,6 @@ MANIFEST
 
 /t.py
 /test*.py
+
+# Claude Code
+.claude