fix(k8s): 可视化编辑器 YAML 解析失败（managedFields 清理）

- 先解析原始 YAML 再对象级剥离，避免 cleanYAML 破坏结构
- managedFields 从 METADATA_LINE_KEYS 移除，改整块删除含数组项
- YamlViewer 同步使用 parseEditableManifest

frontend/src/components/kubernetes/ResourceVisualEditor.tsx

@@ -13,7 +13,7 @@ import { yaml } from '@codemirror/lang-yaml';
 import { oneDark } from '@codemirror/theme-one-dark';
 import { cleanYAML } from './k8s-yaml-utils';
 import { createEmptyManifest } from './resource-create-templates';
-import { parseManifest, dumpManifest, prepareManifestForSave } from './k8s-manifest-utils';
+import { parseManifest, parseEditableManifest, dumpManifest, prepareManifestForSave } from './k8s-manifest-utils';
 
 interface ResourceVisualEditorProps {
   clusterCode: string;
@@ -46,10 +46,10 @@ export function ResourceVisualEditor({ clusterCode, namespace, resource, name, o
         return;
       }
       const text = await kubernetesApi.getResourceYaml(clusterCode, namespace, resource, name);
-      const cleaned = cleanYAML(text);
       setRawYaml(text);
-      setEditYaml(cleaned);
-      const parsed = await parseManifest(cleaned);
+      // 先解析原始 YAML，再用对象级剥离；cleanYAML 会破坏 managedFields 导致解析失败 // Logan.Li
+      const { manifest: parsed, yaml: editableYaml } = await parseEditableManifest(text);
+      setEditYaml(editableYaml);
       setManifest(parsed);
       if (!parsed) {
         setMode('yaml');