Add .claude/worktrees to .gitignore

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: mikkeldamsgaard

.gitignore

@@ -33,6 +33,9 @@ Thumbs.db
 # Ralph runtime
 .ralph/
 
+# Claude Code
+.claude/worktrees/
+
 # Environment
 .env
 ralph.env