fix(BA-5830): wire AppConfigAdapter into Fragment REST handler my_bulk

After BA-5829 split the merged-view methods (`my_bulk_create` /
`my_bulk_update`) into their own `AppConfigAdapter`, the Fragment REST
handler still referenced them on `AppConfigFragmentAdapter` (404 at
type-check time). The fragment routes own these URLs (the SDK already
posts to `/v2/app-config-fragments/my/bulk-*`), so inject the
`AppConfigAdapter` alongside the Fragment one and dispatch the my-bulk
calls there. Also flips `V2AppConfigHandler` to take `AppConfigAdapter`
instead of the now-stale Fragment adapter.

Author: jopemachine

src/ai/backend/manager/api/rest/v2/app_config_fragment/handler.py

@@ -30,16 +30,28 @@
 )
 
 if TYPE_CHECKING:
+    from ai.backend.manager.api.adapters.app_config import AppConfigAdapter
     from ai.backend.manager.api.adapters.app_config_fragment import AppConfigFragmentAdapter
 
 log: Final = BraceStyleAdapter(logging.getLogger(__spec__.name))
 
 
 class V2AppConfigFragmentHandler:
-    """REST v2 handler for app-config fragment operations."""
+    """REST v2 handler for app-config fragment operations.
 
-    def __init__(self, *, adapter: AppConfigFragmentAdapter) -> None:
+    Self-service `my_bulk_*` writes return recomputed merged
+    `AppConfig` views, so they are dispatched to `AppConfigAdapter`;
+    everything else is the raw-row Fragment surface.
+    """
+
+    def __init__(
+        self,
+        *,
+        adapter: AppConfigFragmentAdapter,
+        app_config_adapter: AppConfigAdapter,
+    ) -> None:
         self._adapter = adapter
+        self._app_config_adapter = app_config_adapter
 
     # ── Reads ────────────────────────────────────────────────────
 
@@ -107,15 +119,15 @@ async def my_bulk_create(
         body: BodyParam[BulkCreateMyAppConfigFragmentsInput],
     ) -> APIResponse:
         """Self-service bulk create on the caller's `USER` row."""
-        result = await self._adapter.my_bulk_create(body.parsed)
+        result = await self._app_config_adapter.my_bulk_create(body.parsed)
         return APIResponse.build(status_code=HTTPStatus.OK, response_model=result)
 
     async def my_bulk_update(
         self,
         body: BodyParam[BulkUpdateMyAppConfigFragmentsInput],
     ) -> APIResponse:
         """Self-service bulk update on the caller's `USER` row."""
-        result = await self._adapter.my_bulk_update(body.parsed)
+        result = await self._app_config_adapter.my_bulk_update(body.parsed)
         return APIResponse.build(status_code=HTTPStatus.OK, response_model=result)
 
 

src/ai/backend/manager/api/rest/v2/tree.py

@@ -122,7 +122,10 @@ def build_v2_routes(
     # Build all handlers (each takes its individual adapter)
     agent_handler = V2AgentHandler(adapter=adapters.agent)
     app_config_handler = V2AppConfigHandler(adapter=adapters.app_config)
-    app_config_fragment_handler = V2AppConfigFragmentHandler(adapter=adapters.app_config_fragment)
+    app_config_fragment_handler = V2AppConfigFragmentHandler(
+        adapter=adapters.app_config_fragment,
+        app_config_adapter=adapters.app_config,
+    )
     app_config_policy_handler = V2AppConfigPolicyHandler(adapter=adapters.app_config_policy)
     artifact_handler = V2ArtifactHandler(adapter=adapters.artifact)
     artifact_registry_handler = V2ArtifactRegistryHandler(adapter=adapters.artifact_registry)