Social notifications

Announces a YouTube channel's new uploads.

Searching YouTube for a channel — Type a name, pick the right channel. Subscriber counts make it obvious which is which.

Search by name and pick from the results rather than pasting a URL. It resolves to the real channel ID once, which is what stops you subscribing to the wrong channel of two with similar handles.

Option	What it does
Announcement channel	Where the post goes
Ping role	A role mentioned with it
Message	Your wording. `${title}`, `${url}`, `${channelname}`

Leaving the message empty posts the link alone and lets Discord's embed do the work.

Announcements arrive by push from YouTube rather than by polling.