This study introduces GenAI-FDT (GenFedTwin Resilience), a decentralized architecture designed to address the growing vulnerability of IoT-enabled smart infrastructures to climate change, particularly in the context of data silos, strict privacy regulations, and the scarcity of ground-truth data for rare catastrophic events such as floods in Maharashtra. Unlike traditional centralized digital twins, which struggle with data heterogeneity and excessive communication costs, the proposed framework integrates quantized diffusion-based Generative AI, semi-supervised federated learning (FedProx), and lightweight LSTM-CNN digital twins deployed on resource-constrained edge devices like Raspberry Pi... More >