Function armFacebookLivestream

armFacebookLivestream(
    pageAccessToken: string,
    pageId: string,
    livestream: Livestream,
    armedFacebookLivestream: Livestream,
): Promise<ArmFacebookLivestreamResult>
Creates a Facebook LiveVideo and persists arm metadata on a scheduled livestream row.
Parameters
- pageAccessToken: string
  Resolved Page access token with live video permissions.
- pageId: string
  Facebook Page ID that owns the live video.
- livestream: Livestream
  Livestream row to arm (must be scheduled with Facebook targeted).
- armedFacebookLivestream: Livestream
  Another armed Facebook livestream for conflict detection, if any.
Returns Promise<ArmFacebookLivestreamResult>
Updated row and optional conflict metadata, or upstream error details.
- Defined in lib/livestreams/arm-facebook-livestream.ts:41