feat: quick polls in comments that end in a decision

«📊 Añadir una encuesta» adds 2 to 6 options to a new comment. Members,
viewers too, vote by clicking an option (one vote each, which they can
change or take back) and see each option's votes as a bar. Whoever
started it, or an admin, closes it with «Cerrar y decidir»: the most
voted wins (none on a tie) and a «Decidido: …» reply marked as a
decision shows above the ticket. Events of the comment (voted, closed).

API: addComment(…, poll), votePoll, closePoll, Comment.poll;
POST /api/comments/{id}/poll/vote and …/poll/close. MCP: add_comment
poll, vote_poll, close_poll.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

libs/web/tracker/application/src/lib/events/issue.events.ts

@@ -47,7 +47,11 @@ export const issuePageEvents = eventGroup({
       files?: File[];
       /** Comment it answers (one level of replies). */
       replyTo?: string | null;
+      /** A quick poll's options. */
+      poll?: string[] | null;
     }>(),
+    pollVoteRequested: type<{ commentId: string; option: number | null }>(),
+    pollCloseRequested: type<{ commentId: string; decide: boolean }>(),
     watchRequested: type<{ issueId: string; watching: boolean }>(),
     pinRequested: type<{ issueId: string; pinned: boolean }>(),
     followTreeRequested: type<{ issueId: string; on: boolean }>(),