add safe home assistant error handling

app/main.py

@@ -5,6 +5,7 @@ from fastapi import FastAPI
 
 from app.api.v1.entities import router as entities_router
 from app.config import load_settings
+from app.core.exception_handlers import register_exception_handlers
 from app.ha.client import HaClient, HaClientSettings
 from app.ha.reader import HaReader
 
@@ -31,6 +32,7 @@ app = FastAPI(
     lifespan=lifespan,
 )
 
+register_exception_handlers(app)
 
 app.include_router(entities_router)