fix(schemas): k8s toYaml 修复 ports/volumes/envFrom 等数组-对象字段被错渲为 dict

toYaml(obj, indent=0) 旧版递归缩进计算错位，导致:
  ports:
      ports:        <- 多余的父 key 行
        - name: http
          containerPort: 5099
被 pyyaml 反解为 {0:{...}} 而不是 list, kubectl apply 报:
  cannot unmarshal object into Go struct field
  Container.spec.template.spec.containers.ports of type []v1.ContainerPort

修复:
- 重写为 baseIndent 字符串缩进版, 数组-对象分支递归渲染后第一行加 '- '
- 新增 yamlScalar(v) 处理 number/boolean/特殊字符安全引号
- 新增 isEmptyMapping(o) 把 emptyDir:{} 等空对象渲染为 {}
- 20 个 k8s-*.js schema 全部统一替换

验证:
- npm run build 通过
- PyYAML 反序列化 ports/volumes/envFrom/tolerations 等 9 个数组-对象字段全部为 list
- 全部 20 个 schema E2E OK

src/schemas/k8s-ingress.js

@@ -136,36 +136,65 @@ export const k8sIngressSchema = {
   ],
 }
 
-function toYaml(obj, indent = 0) {
-  const lines = []
-  const prefix = '  '.repeat(indent)
 
+
+
+function yamlScalar(v) {
+  if (v === null || v === undefined) return ''
+  if (typeof v === 'number' || typeof v === 'boolean') return String(v)
+  const s = String(v)
+  if (/[:#\n"'`]|^[\s\-]|[\s]$/.test(s) || /^(true|false|null|yes|no|on|off|~)$/i.test(s)) {
+    return JSON.stringify(s)
+  }
+  return s
+}
+
+function isEmptyMapping(o) {
+  if (!o || typeof o !== 'object' || Array.isArray(o)) return false
+  return Object.values(o).every(v => v === null || v === undefined || v === '' || (typeof v === 'object' && isEmptyMapping(v)))
+}
+
+function toYaml(obj, baseIndent = '') {
+  const lines = []
   for (const [key, value] of Object.entries(obj)) {
     if (value === null || value === undefined || value === '') continue
-
     if (Array.isArray(value)) {
-      lines.push(`${prefix}${key}:`)
-      for (const item of value) {
-        if (typeof item === 'object' && item !== null) {
+      const items = value.filter(v => v !== null && v !== undefined && v !== '')
+      if (!items.length) continue
+      lines.push(`${baseIndent}${key}:`)
+      for (const item of items) {
+        if (item && typeof item === 'object' && !Array.isArray(item)) {
+          if (isEmptyMapping(item)) continue
           const entries = Object.entries(item).filter(([, v]) => v !== null && v !== undefined && v !== '')
-          if (entries.length === 0) continue
-          const first = entries[0]
-          lines.push(`${prefix}  - ${first[0]}: ${first[1]}`)
-          for (let i = 1; i < entries.length; i++) {
-            lines.push(`${prefix}    ${entries[i][0]}: ${entries[i][1]}`)
+          if (!entries.length) continue
+          const childIndent = baseIndent + '  '
+          const subAllIndent = childIndent + '  '
+          const subObj = {}
+          for (const [k, v] of entries) subObj[k] = v
+          const subRendered = toYaml(subObj, subAllIndent)
+          const subLines = subRendered.split('\n')
+          if (subLines[0].startsWith(subAllIndent)) {
+            subLines[0] = childIndent + '- ' + subLines[0].slice(subAllIndent.length)
+          } else {
+            subLines[0] = childIndent + '- ' + subLines[0].trimStart()
           }
+          lines.push(...subLines)
         } else {
-          lines.push(`${prefix}  - ${item}`)
+          lines.push(`${baseIndent}  - ${yamlScalar(item)}`)
         }
       }
     } else if (typeof value === 'object') {
-      lines.push(`${prefix}${key}:`)
-      lines.push(toYaml(value, indent + 1))
+      if (isEmptyMapping(value)) {
+        lines.push(`${baseIndent}${key}: {}`)
+        continue
+      }
+      lines.push(`${baseIndent}${key}:`)
+      const childIndent = baseIndent + '  '
+      lines.push(toYaml(value, childIndent))
     } else {
-      lines.push(`${prefix}${key}: ${value}`)
+      lines.push(`${baseIndent}${key}: ${yamlScalar(value)}`)
     }
   }
-
   return lines.join('\n')
 }