Addresses off-grid potable-water gaps in arid regions with a bio-inspired hybrid aerogel that couples nocturnal atmospheric moisture adsorption with solar-driven interfacial desalination. Rice-husk biochar scaffolds loaded with CaCl2 and plasmonic nanoparticles are folded into origami panels; characterized physicochemical properties, dynamic vapor sorption across humidity and temperature ranges, photothermal evaporation, and autonomous day night cycling; conducted 0.25 m2 field deployments including arid region, Abha, Saudi Arabia sites producing 2.7 +/- 0.3 L day- 1 at about 35 % ambient humidity; energy analysis indicated 1.7 MJ kg H2O- 1 (0.47 kWh L- 1) regeneration; produced water met potable quality metrics; cradle to gate life cycle model reported global warming potential 17.4 kg CO2eq and cumulative energy demand 312 MJ per functional m2 with intensity 0.48 kg CO2eq m3 across assessed service life; cost model with sorbent fabrication $42 m- 2 and identified freeze drying throughput as key lever; concept reduces reliance on grid energy and external infrastructure for dispersed communities; limits include processing energy, material cost, and climatic dependence; integration pathways with modular 4 to 6 m2 units discussed, targeting off grid clinics and relief camps.