add applyconfigurations (#4701)

Assisted-by: Cursor:grok-4.5

Signed-off-by: Mózes László Máté <laszlo.mozes@nokia.com>

Author: mozesl-nokia

api/doc.go

@@ -0,0 +1,20 @@
+// Copyright 2026 The kpt Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Package apis contains the kpt API type definitions.
+package apis
+
+//go:generate go run sigs.k8s.io/controller-tools/cmd/controller-gen@v0.21.0 object:headerFile="../hack/boilerplate.go.txt",year=$YEAR_GEN applyconfiguration:headerFile="../hack/boilerplate.go.txt" paths=./...
+// Drop generated helpers that pull in k8s.io/apimachinery; typed ACs are enough.
+//go:generate rm -rf generated/applyconfigurations/utils.go generated/applyconfigurations/internal

api/fnresult/v1/types.go

@@ -13,6 +13,9 @@
 // limitations under the License.
 
 // +kubebuilder:object:generate=true
+// +kubebuilder:ac:generate=true
+// +kubebuilder:ac:output:package=../../generated/applyconfigurations
+// +groupName=kpt.dev
 package v1
 
 import (
@@ -25,8 +28,6 @@ import (
 	"sigs.k8s.io/kustomize/kyaml/yaml"
 )
 
-//go:generate go run sigs.k8s.io/controller-tools/cmd/controller-gen@v0.21.0 object:headerFile="../../../hack/boilerplate.go.txt",year=$YEAR_GEN
-
 // Result contains the structured result from an individual function
 type Result struct {
 	// Image is the full name of the image that generates this result
@@ -71,6 +72,7 @@ func ResultListGVK() schema.GroupVersionKind {
 }
 
 // ResultList contains aggregated results from multiple functions
+// +kubebuilder:ac:generate=true
 type ResultList struct {
 	yaml.ResourceMeta `yaml:",inline"`
 	// ExitCode is the exit code of kpt command