docs: Improve error handling for toolbox-core client

Author: anubhav756

packages/toolbox-core/src/toolbox_core/client.py

@@ -13,7 +13,6 @@
 # limitations under the License.
 
 
-from asyncio import get_running_loop
 from types import MappingProxyType
 from typing import Any, Awaitable, Callable, Mapping, Optional, Union
 
@@ -272,6 +271,11 @@ async def load_toolset(
         # Request the definition of the toolset from the server
         url = f"{self.__base_url}/api/toolset/{name or ''}"
         async with self.__session.get(url, headers=resolved_headers) as response:
+            if response.status != 200:
+                error_text = await response.text()
+                raise RuntimeError(
+                    f"API request failed with status {response.status} ({response.reason}). Server response: {error_text}"
+                )
             json = await response.json()
         manifest: ManifestSchema = ManifestSchema(**json)