Add unified-snapshots e2e: SDK write-path and delete-protection

tests/unified-snapshots/unified_snapshots_suite_test.go

@@ -0,0 +1,59 @@
+/*
+Copyright 2026 Flant JSC
+
+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 unified_snapshots
+
+import (
+	"os"
+	"strings"
+	"testing"
+	"time"
+
+	. "github.com/onsi/ginkgo/v2"
+	. "github.com/onsi/gomega"
+
+	"github.com/deckhouse/storage-e2e/internal/config"
+	"github.com/deckhouse/storage-e2e/internal/logger"
+)
+
+var _ = BeforeSuite(func() {
+	// SNAP_KUBECONFIG lets the suite attach to an already-reachable cluster (e.g. a persistent local
+	// tunnel) without SSH. In that mode the SSH/registry/license env that ValidateEnvironment demands is
+	// irrelevant, so skip it; otherwise validate the full connect-via-SSH environment.
+	if strings.TrimSpace(os.Getenv("SNAP_KUBECONFIG")) == "" {
+		Expect(config.ValidateEnvironment()).NotTo(HaveOccurred(), "Failed to validate environment")
+	}
+	Expect(logger.Initialize()).NotTo(HaveOccurred(), "Failed to initialize logger")
+})
+
+var _ = AfterSuite(func() {
+	if err := logger.Close(); err != nil {
+		GinkgoWriter.Printf("Warning: Failed to close logger: %v\n", err)
+	}
+})
+
+// TestUnifiedSnapshots exercises the state-snapshotter unified-snapshot SDK write-path
+// (DomainCaptureStatus phases, Ready mirroring, delete-protected marker stamping) and the
+// admission delete-guard (DELETE-deny, break-glass, marker immutability, cascade teardown)
+// against an existing cluster with the sds-unified-snapshots-poc demo controllers.
+func TestUnifiedSnapshots(t *testing.T) {
+	RegisterFailHandler(Fail)
+	suiteConfig, reporterConfig := GinkgoConfiguration()
+	suiteConfig.Timeout = 30 * time.Minute
+	reporterConfig.Verbose = true
+	reporterConfig.ShowNodeEvents = false
+	RunSpecs(t, "Unified Snapshots (SDK + delete-protection) Suite", suiteConfig, reporterConfig)
+}