Ignore local Claude state (#255)

Author: Kludex

.gitignore

@@ -198,4 +198,8 @@ cython_debug/
 #  be found at https://github.com/github/gitignore/blob/main/Global/JetBrains.gitignore
 #  and can be added to the global gitignore or merged into this file.  For a more nuclear
 #  option (not recommended) you can uncomment the following to ignore the entire idea folder.
-#.idea/
+#.idea/
+
+# Local coding agents
+.claude/settings.local.json
+.claude/worktrees/