A next-generation grassroots emergency facility built for blackout, network-loss and road-cut scenarios. The 18 m2 cabin combines PV generation, high-capacity solid-state storage and a diesel genset; converged 5G-A, satellite, broadband HF and mesh links; drone patrol and early warning; public-address broadcasting; and smart supply storage with auto rotation. Modular three-zone layout, 25-year design life, deployable in 1-2 days. Community service in peacetime, on-site command in disaster.