prompts/ and runs/ move by git mv; zero padding dropped; the
arbitration and LLM-merge rows in the cost ledger carry no new
name -- their step column reads 已廢棄 with the original name
kept in a new last column. Archived meta.json files and past
decision-log entries keep the names they were written with.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
