Fix WS API: read lovelace config from .storage file directly

HA 2026.10 stores dashboard configs as .storage/lovelace.{url_path}
with hyphens replaced by underscores. Direct file read is more reliable
than internal hass.data access which varies across versions.

Also added error logging to async_setup_entry for WS registration.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

integration/custom_components/luma_home/__init__.py

@@ -1,10 +1,12 @@
 """Luma Home — config bridge between HA dashboards and Luma TV app."""
 
+import logging
 from homeassistant.config_entries import ConfigEntry
 from homeassistant.core import HomeAssistant
 
 from .const import DOMAIN
-from . import websocket_api
+
+_LOGGER = logging.getLogger(__name__)
 
 
 async def async_setup(hass: HomeAssistant, config: dict) -> bool:
@@ -19,7 +21,12 @@ async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
     hass.data[DOMAIN][entry.entry_id] = {
         "dashboard_url_path": entry.data.get("dashboard_url_path", "luma-tv"),
     }
-    websocket_api.async_register_commands(hass)
+    try:
+        from . import websocket_api
+        websocket_api.async_register_commands(hass)
+        _LOGGER.info("Luma Home WS commands registered successfully")
+    except Exception:
+        _LOGGER.exception("Failed to register Luma Home WS commands")
     return True