Add custom user-LoRA (Quality mode) for the MPS route

fix(ui): replace track_tqdm with a manual step callback for clear progress labels

fix(zerogpu): raise duration to 145s + QIE_GPU_DURATION override

fix(zerogpu): lower duration to ~54s (108s req) — per-call ceiling is ~120s req

fix(zerogpu): scale duration with steps; materialization is ~15-40s, not 130s

fix(zerogpu): cap @spaces.GPU duration to 145s (xlarge 2x -> 290s, under the cap)

fix(zerogpu): set duration to 180 and lower Quality default steps to 28

fix(zerogpu): cap queue concurrency and raise @spaces.GPU duration (Fast 120 / Quality 180)

feat: build Qwen Image Editor app (Edit/Compose tabs, Fast/Quality, ZeroGPU + local CUDA) with tests