"""Compatibility shim for UIManager.

Canonical implementation lives in `thechart.ui.ui_manager`.
This keeps `from ui_manager import UIManager` working for legacy scripts/tests.
Also exposes preferences helpers (get_pref, set_pref, save_preferences) and
`datetime` for tests that patch `src.ui_manager.datetime`.
"""

from __future__ import annotations

raise ImportError("src.ui_manager is removed. Import from 'thechart.ui_ui_manager'.")