AgriBridge is an edge-first, privacy-preserving agricultural advisory platform designed to empower farmers with instant, climate-resilient crop disease management. Built as a responsive Progressive Web App powered by React and FastAPI, AgriBridge performs computer vision disease diagnosis (MobileNetV3) and multilingual voice processing entirely on-device, ensuring crop images and audio never leave the phone. By combining edge-detected plant pathology with real-time micro-climate weather forecasts and local semantic search (RAG), the platform uses Google Gemma 4 to synthesize hyper-localized, predictive, and empathetic agronomic guidance across English, Hindi, and Bengali—delivering expert extension advice without the bandwidth burden.