feat(deploy): vendor ace-step as submodule, skip nano-vllm via sys.path injection

fix(deploy): switch to apple-silicon ace-step fork — no nano-vllm, looser gradio pin

fix(deploy): align gradio to ace-step's pin (6.2.0) — drop our own pin, let hf inject

fix(deps): add hf_transfer for fast hub downloads

fix(deploy): pin gradio to 6.14 to match running version + claude.md note refresh

feat(deploy): m7 — hf spaces readme + cache bootstrap + zerogpu decorator

chore: pin deps with mac vs cuda ace-step branching