- Use relative imports across nodes/ and lib/ so ComfyUI's loader resolves the
local subpackages instead of colliding with ComfyUI's own top-level nodes module.
- tts_output_to_audio_dict now returns CPU tensors so downstream nodes don't see CUDA tensors.
- model_state cache key uses resolved dtype string, so dtype=auto and the matching
explicit choice share one cache slot (no spurious 13 GB reload).
- Add cleanup_one(key) helper as called for in spec section 4.
- Fix pyproject Homepage URL to point at this repo.