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/credential-06PDv2P-.js

@@ -0,0 +1 @@
+import{h as t}from"./index-BBDEBVET.js";const a={list:e=>t.get("/credentials",e),get:e=>t.get(`/credentials/${e}`),create:e=>t.post("/credentials",e),update:(e,s)=>t.put(`/credentials/${e}`,s),delete:e=>t.delete(`/credentials/${e}`),toggleActive:(e,s)=>t.put(`/credentials/${e}`,{is_active:s})},r={assign:(e,s)=>t.post(`/servers/${e}/assign-credential`,{credential_id:s})};export{a as c,r as s};