AI-tool used to develop xcif module.

Claude Opus 4.6, 4.8 (Anthropic) and Gemini 3.1 Pro, 3.5 Pro (Google) were
used via chat interfaces, and Claude Code with Opus 4.6 and
Opus 4.8 (Anthropic) as a coding agent. The assistants were used to propose
candidate implementations, refactorings, tests and debugging strategies.

The human authors specified the parser requirements, interpreted the relevant
CIF behaviour, designed and approved the validation tests, and reviewed,
verified, and accepted or rejected every change; they are responsible for
the final implementation. No AI tool is listed as an author.
