feat(t2i): raise Width/Height cap to 2048 and switch step to 16

refactor(upscale): drop LoRA support per spec

fix(upscale): pass post-upscale dims to pipe + LoRA label hints model compat

feat(ui): soft dark restraint redesign — native gr.Radio + accordion + lora toggle

fix: actually use Base transformer when user picks Base

fix: pool-stashed transformer swap + MPS-safe vram + corrected model-zoo anchor

feat(ui): per-tab gradio builders with labeled_label + custom model selector

feat(ui): labeled_label and model_selector_html helpers