Commercial workplace-safety software — Protex AI, Intenseye, and the rest — runs $500 to $2,000 a month. It watches camera feeds for PPE violations: a worker without a hard hat, a missing high-vis vest, no fall harness at height. The technology isn't exotic anymore. The price tag is. So over eight weeks, solo, I built SafetyVision — an open-source PPE compliance monitor that does the core job for free and runs on $0 of infrastructure. Not a toy: a fine-tuned detection model, explainable predictions, OSHA-grounded incident reports, compliance forecasting, a documented API and SDK, and a one-command self-host. Three live surfaces, all free-tier. ▶ 3-minute walkthrough · Live app · GitHub This is the story of the decisions that mattered — including the ones that didn't go to plan. The product, in one breath Upload a worksite photo.…