chore: rename HF owner HlexNC → arudaev across all references

feat: add CLAHE, label smoothing, TTA, and ensemble inference

fix(types): resolve all 8 mypy errors across 5 files

Add resize_320 Kaggle pipeline script and tests

fix(resize_320): build and dispatch the raw-source Kaggle pipeline

v2: SE attention, AMP, grad accumulation, rich model cards with Mermaid

Add HF hub utilities, fix Kaggle secret injection via dataset source

Restore src/data package, fix HF Space bootstrap, improve Kaggle/CI wiring