0bb9d71a26
- Merge send_later into schedule_reminder (optional `to` param — omit for self-reminder) - Add subtype?: "reminder" to WSPushMessage, WSScheduleMessage, ScheduledEntry, InboundPush - Broker handleSend now accepts optional subtype and injects into push envelope - deliver closure passes sm.subtype so reminders surface correctly - MCP channel meta includes subtype field; formatPush tags [REMINDER] in check_messages - MCP server instructions document subtype and schedule_reminder/list_scheduled/cancel_scheduled - client.scheduleMessage accepts isReminder flag, sends subtype: "reminder" on wire Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>