The 36 full papers included in this book were carefully reviewed and selected from 85 submissions. They were organized in topical sections as follows: Foundations, Retrieval, and the State of CBR; Explainable, Multimodal, and Responsible CBR; LLM-Based CBR: Prompting, Adaptation, and Generation; CBR for Dynamic Real-World Domains and Applications; Security, Workflows, and CBR Development;