UPSTREAM PR #1157: feat: generate new random seed per request when seed is -1 #3
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Mirrored from leejet/stable-diffusion.cpp#1157
This PR ensures that each image generation request uses a unique random seed when the user specifies
seed: -1. Previously, a seed of-1would result in deterministic behavior across requests. The changes introduce:<random>header for random device usage.examples/server/main.cppto detectseed == -1and replace it with a freshly generated 64‑bit seed usingstd::random_device.