refactor: update app.py to improve maintainability and performance

refactor: update app.py to optimize facial expression inference pipeline performance

refactor: update app entry point for improved service configuration and error handling

chore: update project dependencies in requirements.txt

chore: update project dependencies in requirements.txt

chore: fix dependencies and configuration for huggingface deployment

chore: update requirements and add venv to gitignore

feat: implement initial facial expression recognition training pipeline with TTA support

initial commit