How to Build an Offline AI Image Generator in Node.js with QVAC and Socket.io

Build a fully offline AI image generator using Node.js, Express, Socket.io, and the QVAC SDK running a quantized Stable Diffusion 2.1 model — no API keys, no subscriptions, no cloud costs. The tutorial covers the full diffusion pipeline, GPU/CPU fallback handling for older hardware, in-memory image serialization, and real-time WebSocket progress streaming.