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- test_file_staleness redacted-read case now force-enables redaction (matches tests/agent/test_redact.py convention) so it exercises the sentinel path in hermetic CI where security.redact_secrets is unset. - test_write_verification CRLF case establishes a read baseline first (the new guard refuses unread existing-file overwrites by design). - tools-reference.md documents the read-before-overwrite contract. - contributors/emails mapping for DanSpicyTaco.