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

backend/static/assets/platform-C6RqWExM.js

@@ -0,0 +1 @@
+import{h as r}from"./index-BBDEBVET.js";const p={list:async()=>r.get("/platforms"),create:async t=>r.post("/platforms",t),update:async(t,e)=>r.put(`/platforms/${t}`,e),delete:async t=>r.delete(`/platforms/${t}`)};export{p};