{
  "domain": "my_integration",
  "name": "My Integration",
  "codeowners": ["@username"],
  "config_flow": true,
  "documentation": "https://github.com/username/ha-my-integration",
  "requirements": [],
  "version": "0.0.1"
}

import asyncio
from homeassistant.config_entries import ConfigEntry
from homeassistant.core import HomeAssistant
from homeassistant.exceptions import ConfigEntryNotReady

from .coordinator import MyDataUpdateCoordinator

DOMAIN = "my_integration"

async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
    """Set up the integration from config entry."""
    hass.data.setdefault(DOMAIN, {})

    # Create coordinator
    coordinator = MyDataUpdateCoordinator(hass, entry)
    await coordinator.async_config_entry_first_refresh()

    hass.data[DOMAIN][entry.entry_id] = coordinator

    # Forward setup to platforms
    await hass.config_entries.async_forward_entry_setups(entry, ["sensor"])

    return True

async def async_unload_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
    """Unload the integration."""
    unload_ok = await hass.config_entries.async_unload_platforms(entry, ["sensor"])
    if unload_ok:
        hass.data[DOMAIN].pop(entry.entry_id)
    return unload_ok

from typing import Any, Dict, Optional
import voluptuous as vol
from homeassistant.config_entries import ConfigFlow, ConfigEntry
from homeassistant.core import callback
from homeassistant.data_entry_flow import FlowResult

from .const import DOMAIN

class MyIntegrationConfigFlow(ConfigFlow, domain=DOMAIN):
    """Handle config flow for my_integration."""

    async def async_step_user(self, user_input: Optional[Dict[str, Any]] = None) -> FlowResult:
        """Handle user initiation of config flow."""
        errors = {}

        if user_input is not None:
            # Validate user input
            try:
                # Validate connection or API call
                pass
            except Exception as exc:
                errors["base"] = "invalid_auth"

            if not errors:
                # Create unique entry
                await self.async_set_unique_id(user_input.get("host"))
                self._abort_if_unique_id_configured()

                return self.async_create_entry(
                    title=user_input.get("name"),
                    data=user_input
                )

        # Show form
        return self.async_show_form(
            step_id="user",
            data_schema=vol.Schema({
                vol.Required("name"): str,
                vol.Required("host"): str,
            }),
            errors=errors
        )

    @staticmethod
    @callback
    def async_get_options_flow(config_entry: ConfigEntry):
        """Return options flow for this integration."""
        return MyIntegrationOptionsFlow(config_entry)

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**✅ Correct:**
```python

**Why:** Synchronous calls block Home Assistant's event loop, causing UI freezes. Missing unique_id causes entity duplicates. Missing await means code continues before async operation completes.

{
  "domain": "integration_name",
  "name": "Integration Display Name",
  "codeowners": ["@github_username"],
  "config_flow": true,
  "documentation": "https://github.com/username/repo",
  "homeassistant": "2024.1.0",
  "requirements": ["requests>=2.25.0"],
  "version": "1.0.0",
  "issue_tracker": "https://github.com/username/repo/issues"
}

vol.Schema({
    vol.Required("host"): vol.All(str, vol.Length(min=5)),
    vol.Required("port", default=8080): int,
    vol.Optional("api_key"): str,
})

async def async_step_reauth(self, user_input: Dict[str, Any] | None = None) -> FlowResult:
    """Handle reauth upon an API authentication error."""
    config_entry = self.hass.config_entries.async_get_entry(
        self.context["entry_id"]
    )

    if user_input is not None:
        config_entry.data = {**config_entry.data, **user_input}
        self.hass.config_entries.async_update_entry(config_entry)
        return self.async_abort(reason="reauth_successful")

    return self.async_show_form(
        step_id="reauth",
        data_schema=vol.Schema({vol.Required("api_key"): str})
    )

from homeassistant.components.sensor import SensorEntity, SensorStateClass
from homeassistant.const import UnitOfTemperature

class TemperatureSensor(SensorEntity):
    """Temperature sensor entity."""

    _attr_device_class = "temperature"
    _attr_state_class = SensorStateClass.MEASUREMENT
    _attr_native_unit_of_measurement = UnitOfTemperature.CELSIUS

    def __init__(self, coordinator, idx):
        """Initialize sensor."""
        self.coordinator = coordinator
        self._idx = idx

    @property
    def unique_id(self) -> str:
        """Return unique ID."""
        return f"{self.coordinator.data['id']}_temp_{self._idx}"

    @property
    def device_info(self) -> DeviceInfo:
        """Return device information."""
        return DeviceInfo(
            identifiers={(DOMAIN, self.coordinator.data['id'])},
            name=self.coordinator.data['name'],
            manufacturer="My Company",
        )

    @property
    def native_value(self) -> float | None:
        """Return sensor value."""
        try:
            return float(self.coordinator.data['temperature'])
        except (KeyError, TypeError):
            return None

    async def async_added_to_hass(self) -> None:
        """Connect to coordinator when added."""
        await super().async_added_to_hass()
        self.async_on_remove(
            self.coordinator.async_add_listener(self._handle_coordinator_update)
        )

    @callback
    def _handle_coordinator_update(self) -> None:
        """Update when coordinator updates."""
        self.async_write_ha_state()

from homeassistant.components.binary_sensor import BinarySensorEntity, BinarySensorDeviceClass

class MotionSensor(BinarySensorEntity):
    """Motion detection sensor."""

    _attr_device_class = BinarySensorDeviceClass.MOTION

    @property
    def is_on(self) -> bool | None:
        """Return True if motion detected."""
        return self.coordinator.data.get('motion', False)

from datetime import timedelta
from homeassistant.helpers.update_coordinator import (
    DataUpdateCoordinator,
    UpdateFailed,
)
import logging

_LOGGER = logging.getLogger(__name__)

class MyDataUpdateCoordinator(DataUpdateCoordinator):
    """Coordinator for fetching data."""

    def __init__(self, hass, entry):
        """Initialize coordinator."""
        super().__init__(
            hass,
            _LOGGER,
            name="My Integration",
            update_interval=timedelta(minutes=5),
        )
        self.entry = entry

    async def _async_update_data(self):
        """Fetch data from API."""
        try:
            async with aiohttp.ClientSession() as session:
                async with session.get(
                    f"https://api.example.com/data",
                    headers={"Authorization": f"Bearer {self.entry.data['api_key']}"}
                ) as resp:
                    if resp.status == 401:
                        raise ConfigEntryAuthFailed("Invalid API key")
                    return await resp.json()
        except asyncio.TimeoutError as err:
            raise UpdateFailed("API timeout") from err
        except Exception as err:
            raise UpdateFailed(f"API error: {err}") from err

from homeassistant.helpers.device_registry import DeviceInfo

device_info = DeviceInfo(
    identifiers={(DOMAIN, "device_unique_id")},
    name="Device Name",
    manufacturer="Manufacturer",
    model="Model Name",
    sw_version="1.0.0",
    via_device=(DOMAIN, "parent_device_id"),  # For child devices
)

device_info = DeviceInfo(
    identifiers={(DOMAIN, device_id)},
    serial_number="SERIAL123",
    connections={(dr.CONNECTION_NETWORK_MAC, "aa:bb:cc:dd:ee:ff")},
)

class MyIntegration:
    def __init__(self, hass: HomeAssistant, entry: ConfigEntry):
        self.hass = hass
        self.entry = entry
        self.api_key = entry.data.get("api_key")
        self.host = entry.data.get("host")

async def async_step_init(self, user_input: Optional[Dict[str, Any]] = None) -> FlowResult:
    """Manage integration options."""
    if user_input is not None:
        return self.async_create_entry(
            title="",
            data=user_input
        )

    current_options = self.config_entry.options
    return self.async_show_form(
        step_id="init",
        data_schema=vol.Schema({
            vol.Optional("refresh_rate", default=current_options.get("refresh_rate", 5)): int,
        })
    )

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    if not errors:
        return self.async_create_entry(...)

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