fix: Add required headers to Govee login request to resolve app version error

The Govee API now enforces a minimum app version requirement on the
login endpoint, rejecting requests that don't include appVersion,
clientId, clientType, iotVersion, and timestamp headers.

Author: Tom Lasswell

custom_components/govee/api/auth.py

@@ -10,6 +10,7 @@
 
 import base64
 import logging
+import time
 import uuid
 from dataclasses import dataclass
 from typing import Any
@@ -74,6 +75,8 @@ def _sanitize_response_for_logging(data: Any) -> Any:
 GOVEE_IOT_KEY_URL = "https://app2.govee.com/app/v1/account/iot/key"
 GOVEE_DEVICE_LIST_URL = "https://app2.govee.com/device/rest/devices/v1/list"
 GOVEE_CLIENT_TYPE = "1"  # Android client type
+GOVEE_APP_VERSION = "6.5.02"
+GOVEE_IOT_VERSION = "0"
 
 
 def _extract_p12_credentials(
@@ -400,9 +403,15 @@ async def login(
             "clientType": GOVEE_CLIENT_TYPE,
         }
 
+        timestamp_ms = str(int(time.time() * 1000))
         headers = {
             "Content-Type": "application/json",
             "Accept": "application/json",
+            "appVersion": GOVEE_APP_VERSION,
+            "clientId": client_id,
+            "clientType": GOVEE_CLIENT_TYPE,
+            "iotVersion": GOVEE_IOT_VERSION,
+            "timestamp": timestamp_ms,
         }
 
         _LOGGER.debug("Attempting Govee account login")