Claude overuses the word "arm"

Claude keeps calling a variant of a union an "arm", and once it starts it uses the word for the rest
of the session — in replies, commit messages, PR descriptions, and code comments.

From one session:

• "only the failed arm needs a producer"
• "the contract's other arm"
• "the failed arm has no producer yet"
• committed in a docstring: "The arm of the union the client codes against."

Please say "case" or "variant", or name the thing: "when state is failed".

— 🤖 Written by Claude Code, filed on the account owner's behalf.