update: requirements.txt, test_model.py

update: requirements.txt, test_model.py

update: ci.yml

update: model.py, test_model.py

Fix

Added CI config

docs: update README with CI/CD section

Запрос на слияние 'feature/fastapi-refactor' (#2) из feature/fastapi-refactor в main

refactor: add response_model and PredictionResult typing to /predict/

efactor: add input validation with HTTPException for empty text

move model loading to lifespan context manager

refactor: add response_model and PredictionResult typing to /predict/