fix: add password_hash to column discovery candidates

fix: auto-discover MySQL users table column names for login authentication

feat: integrate MySQL user login, SQLite configs, AI Center, and dynamic ML hyperparameter tuning

feat: show all model training runs with dates and pagination in evaluation, and enable ARIMA by default

feat: integrate machine learning forecasting pipeline and unify settings & dashboard under Sikomo theme

Fix: clean_harga logic and rename functions to match traceback