プラグイン

DSH向けの予約リマインダーと遅延送信。`/later` は入力した内容を指定時刻に自分として送信し、タイマーパネル（または`/schedule`）はページを閉じていてもリマインダー行を投稿します。（予約送信/リマインダー/遅延送信）

Scheduled send: fire a drafted message into the bound conversation as a normal user bubble at a set time. Runs host-side, so the browser can stay closed; per-session isolation and restart-safe redelivery.

Timed send for the chat composer: pick a moment and the host delivers the message then. Inside an existing conversation tasks join that conversation; from the new-session screen each task gets its own pre-created session.