AB 2025-06-25: Forward completed licence forms to Jun Zang (jz235@bath.ac.uk) and Haoyu Ding (hd484@bath.ac.uk), ticket I25-0137006; rename to "license agreement_SeaSwallowsTool_[surname]_[date]" for uniqueness. Access can be granted immediately to bona fide researchers (university email, verified identity). Decisions in other cases should be delegated to Jun and Haoyu.