Quantum Delta Nexus: Shanghai's Cognitive Integration with Yangtze Smart Cities^[1][5]^ I. Quantum Urban Fabric Self-optimizing regional systems: - NeuroGrid 5.0: Processes 58 zettabytes/day across 35,000 km² urban-rural continuum^[7]^ - Photon Farm Networks: 78,000 IoT sensors in Chongming optimizing aquaculture via quantum biology