deploy: use best model artifact (T2-LR, val_top1 86.36%)

Fix Python 3.9 compatibility (zip strict)

Add frontend demo with CORS support

Add root endpoint for better UX

Add python-multipart for FastAPI file uploads

Fix Python 3.9 compatibility: replace | union with Optional

Fix deployment: install cv200 package and fix module import

Use Git LFS for model files, copy directly in Dockerfile

Add model files with Git LFS

Add model with Git LFS

initial commit