feat(logging): add centralized logger setup utility

refactor(logging): replace direct logger initialization with setup_logger

fix(security): tighten CORS origin regex for localhost only

feat: add authentication, security middleware, and optimize JSON handling

app.py rollback

update Dockerfile to expose port 8000 and modify CMD for application startup; refactor app.py to implement search_and_chunk function for fetching and processing URLs

major changes

cart in redis

redis cart feature

appointments