Python is a Video Latency Suicide Note: How I Hit 29 FPS with Zero-Copy C++ ONNX

I built a real-time YOLOv8 video pipeline using vanilla ONNX. No bloated frameworks. No Python bottlenecks. Just raw C++ grit. Here is how I dragged a sluggish 10 FPS prototype into a rock-solid 29 FPS beast.