fix(BA-5837): repair node.py after rebase (TYPE_CHECKING + JSON scalar)

Author: jopemachine

src/ai/backend/manager/api/gql/app_config/types/node.py

@@ -1,10 +1,13 @@
-"""AppConfig (merged view) GQL output types (BEP-1052 §5)."""
+"""AppConfig (merged view) GQL output types."""
 
 from __future__ import annotations
 
-from typing import Any
+from typing import TYPE_CHECKING, Annotated
 from uuid import UUID
 
+import strawberry
+from strawberry.scalars import JSON
+
 from ai.backend.common.dto.manager.v2.app_config.response import AppConfigNode
 from ai.backend.common.meta.meta import NEXT_RELEASE_VERSION
 from ai.backend.manager.api.gql.decorators import (
@@ -22,7 +25,7 @@
     BackendAIGQLMeta(
         added_version=NEXT_RELEASE_VERSION,
         description=(
-            "Merged per-user AppConfig view (BEP-1052 §5). `fragments` are ordered "
+            "Merged per-user AppConfig view. `fragments` are ordered "
             "low → high merge priority; `config` is the deep-merge result and is "
             "null when every contributing fragment is empty."
         ),
@@ -45,6 +48,6 @@ class AppConfigGQL(PydanticOutputMixin[AppConfigNode]):
     ] = gql_field(
         description="Contributing fragments in merge order (low → high).",
     )
-    config: dict[str, Any] | None = gql_field(
+    config: JSON | None = gql_field(
         description="Deep-merged configuration, or null when every fragment is empty.",
     )