db8d455bd8
Add Steps, CFGScale, NegativePrompt, Sampler, Seed to imagegen.Request (pointer/empty = leave the backend's per-model default), with mirror options, and forward them in the llamaswap wire payload as the stable-diffusion.cpp fields (steps/cfg_scale/negative_prompt/ sample_method/seed). Unset fields are omitted so sd-server keeps its baked defaults. Lets callers (e.g. mort drawbots) override only what they explicitly set.