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/YamlViewer.tsx

@@ -7,6 +7,7 @@ import { Button } from '@/components/ui/button';
 import { useToast } from '@/hooks/use-toast';
 import { kubernetesApi } from '@/api';
 import { cleanYAML } from './k8s-yaml-utils';
+import { parseEditableManifest } from './k8s-manifest-utils';
 import CodeMirror from '@uiw/react-codemirror';
 import { yaml } from '@codemirror/lang-yaml';
 import { oneDark } from '@codemirror/theme-one-dark';
@@ -40,10 +41,16 @@ export function YamlViewer({ clusterCode, namespace, resource, name, onClose, on
   // autoEdit 时隐式启用清理（编辑入口必须有清理，否则 status/managedFields 会被 K8s 拒绝）
   const effectiveClean = cleanBeforeEdit || autoEdit;
 
+  const toEditableYaml = async (text: string) => {
+    if (!effectiveClean) return text;
+    const { yaml } = await parseEditableManifest(text);
+    return yaml;
+  };
+
   const loadYaml = async () => {
     if (initialYaml) {
       setRawYaml(initialYaml);
-      setEditYaml(effectiveClean ? cleanYAML(initialYaml) : initialYaml);
+      setEditYaml(await toEditableYaml(initialYaml));
       setLoading(false);
       return;
     }
@@ -51,7 +58,7 @@ export function YamlViewer({ clusterCode, namespace, resource, name, onClose, on
     try {
       const text = await kubernetesApi.getResourceYaml(clusterCode, namespace, resource, name);
       setRawYaml(text);
-      setEditYaml(effectiveClean ? cleanYAML(text) : text);
+      setEditYaml(await toEditableYaml(text));
     } catch (e) {
       toast({ title: '获取YAML失败', description: (e as Record<string, any>).message, variant: 'destructive' });
       const err = `# Error: ${e.message}`;
@@ -60,9 +67,8 @@ export function YamlViewer({ clusterCode, namespace, resource, name, onClose, on
     } finally { setLoading(false); }
   };
 
-  const enterEdit = () => {
-    const cleaned = effectiveClean ? cleanYAML(rawYaml) : rawYaml;
-    setEditYaml(cleaned);
+  const enterEdit = async () => {
+    setEditYaml(await toEditableYaml(rawYaml));
     setEditing(true);
     if (effectiveClean) {
       toast({ title: '已清理只读字段', description: '已剥离 status / managedFields / uid 等' });