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context/code/formula-and-io.md gains the argument for text-first CSV and for the two refusals, and puts the partial-skip exit code to the user. context/code/cli.md §13 states the headless contract. Evidence entries are added for the new tests, with notes on the three parser entries whose premise moved. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01VdfEGXA7aJ6ftMsCc9PJze