Smart Home Device State Tracker

from homeassistant.core import HomeAssistant
from typing import Optional, Dict, Any, List

async def setup_tracker(hass: HomeAssistant) -> None:
    """Initialize the state tracker with the Home Assistant instance."""
    pass

async def set_device_state(
    hass: HomeAssistant,
    entity_id: str,
    state: str,
    attributes: Optional[Dict[str, Any]] = None
) -> None:
    """
    Set or update a device state.

    Args:
        hass: The Home Assistant instance
        entity_id: The unique identifier for the device (e.g., "light.bedroom")
        state: The state value (e.g., "on", "off", "23.5")
        attributes: Optional dictionary of device attributes
    """
    pass

def get_device_state(hass: HomeAssistant, entity_id: str) -> Optional[Any]:
    """
    Retrieve the current state of a device.

    Args:
        hass: The Home Assistant instance
        entity_id: The unique identifier for the device

    Returns:
        The State object if found, None otherwise
    """
    pass

async def remove_device_state(hass: HomeAssistant, entity_id: str) -> bool:
    """
    Remove a device from state tracking.

    Args:
        hass: The Home Assistant instance
        entity_id: The unique identifier for the device

    Returns:
        True if the device was removed, False if it didn't exist
    """
    pass

async def get_all_device_states(hass: HomeAssistant) -> List[Any]:
    """
    Retrieve all currently tracked device states.

    Args:
        hass: The Home Assistant instance

    Returns:
        A list of all State objects
    """
    pass