chore: ignore local Claude Code session settings file

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: zenus

.gitignore

@@ -7,3 +7,6 @@ temp
 # Python cache
 __pycache__/
 *.pyc
+
+# Local Claude Code session settings
+.claude/settings.json