支持 Provider Key 余额查询与自动刷新

apps/aether-gateway/src/handlers/admin/provider/endpoint_keys.rs

@@ -1,3 +1,4 @@
+mod balance;
 mod mutations;
 mod quota;
 mod reads;
@@ -18,6 +19,10 @@ pub(crate) async fn maybe_build_local_admin_endpoints_keys_response(
         return Ok(Some(response));
     }
 
+    if let Some(response) = balance::maybe_handle(state, request_context, request_body).await? {
+        return Ok(Some(response));
+    }
+
     if let Some(response) = mutations::maybe_handle(state, request_context, request_body).await? {
         return Ok(Some(response));
     }