Self-Scheduling

When to Use

You told Donny you'd check back about something later — queue the followup now while you remember. "I'll ask him how the house work went tomorrow morning" → schedule_self_followup for ~14 hours out.
You started something you couldn't finish in this turn and need to re-enter it with fresh context — queue a followup for later rather than running the loop until exhausted.
Expected external change: a build that should be done, a forecast that should be updated, a Signal reply that hasn't come — queue a followup to revisit.

You just want to respond now. This is not a "delay my reply" tool.
To schedule a user-facing reminder. Use create_reminder — that's Donny-facing. schedule_self_followup is YOU talking to future-you.
To replace the existing heartbeat cadence. A routine is a standing ritual at a wall-clock time, not a polling tick.

Pass repeat: "daily" | "weekdays" | "weekly" | "monthly" and the wall-clock time in at. Weekly needs day ("fri"); monthly needs day as 1-28.
Schedule a routine ONCE. It re-queues itself after every fire. Never schedule next week's copy by hand, never cancel-and-re-add it each time it fires, and never keep a ladder of one-shots for the same ritual. list_self_followups marks routines with ↻.
If you call with the same rule/time/day again, you get the existing routine back (already_scheduled: true) — nothing is duplicated.
To change a routine's prompt: cancel it, then schedule the new one.
Room re-entries can be routines too: schedule_room_followup takes the same repeat/day.