Create LinkedIn poll post

Between 2 and 4 answer options, each max 30 characters (LinkedIn's own limits). LinkedIn shows two option fields by default and the script adds the extra fields for a third and fourth.

The poll question, max 140 characters (LinkedIn's own limit). This publishes a real, public poll under the logged-in member immediately, so show the exact question and options to the user and get their explicit approval for this specific content before running — approval from an earlier or unrelated message does not carry over.

Optional commentary posted above the poll, in the main composer body. Omit for a bare poll.

How long voting stays open, in days. These are the only four values LinkedIn offers (1 day, 3 days, 1 week, 2 weeks) and they are the select's own option values, which are numeric and therefore locale-invariant. Defaults to 7 (1 week), matching LinkedIn's own default.

True when this run published a new poll. False when an identical poll already existed and nothing was posted (see already_present).

Display name of the logged-in member, read from the composer rather than assumed.

True only if the account's own activity was reloaded after publishing and a post carrying this exact question was found. Never inferred from the composer closing.

Permalink of the poll, resolved from the account's own recent activity.

The poll post's activity urn — the join key, usable with get_post or delete_post.

True when a poll with this exact question was already on the account's own activity before this run composed anything — nothing new was posted, and url/urn point at the existing poll. This makes retrying after a failed or ambiguous run safe rather than duplicating a public post.