feat: downloading only needed models

refactor: switch flux model from GGUF to diffusers safetensors

refactor: rename nemotron download entry to minicpm

feat: swap tildeopen for tiny aya water for translation

feat: downloaded model works

feat: update model download script with correct GGUF repos

restructure: move app.py to root, replace model submodules with HF Hub download script, add package markers

feat: scaffold repo structure with empty files and headers