refactor(vast): [PKG-VAST-03] isolate lifecycle ownership checkpoint

packages/artplayer-plugin-vast/src/sdk.ts

@@ -0,0 +1,14 @@
+import type { ImaSdk } from '@alugha/ima'
+import type { RequestConfig } from './types'
+
+export { loadImaSdk, Player, PlayerOptions } from '@glomex/vast-ima-player'
+
+export function createRequest(ima: ImaSdk, field: 'adTagUrl' | 'adsResponse', value: string, config: RequestConfig) {
+  const request = new ima.AdsRequest()
+  request[field] = value
+  // Preserve the historical SDK extension surface, including inherited config fields.
+  const fields = request as unknown as Record<string, unknown>
+  for (const key in config)
+    fields[key] = config[key]
+  return request
+}