Three defaults that must fail toward idle: OS interruptions, branch-choice timeouts, and cascading deletes in a beat-driven actuation loop

When narrative content drives a physical actuator, the riskiest code paths are often the ones where the user did nothing: the OS interrupted, a prompt timed out, or a delete request has to reach data the user never saw. Each needs a default that fails toward idle (or toward forgetting).

on os_interruption(kind):          # call, alarm, audio focus loss
    ramp_to(IDLE, at=next_beat_boundary)
    armed = false
    on interruption_end():
        # do NOT auto-resume; wait for user to re-enter the story
        await user_resume(); await next_named_beat(); arm()

on branch_prompt(options, timeout):
    choice = await user_choice(timeout)
    if choice is None:
        hold_or_step_down()        # never pick max(options, key=intensity)
    ceiling unchanged unless explicit control used

on delete_session(session_id):
    delete(story_text[session_id])
    delete(choices[session_id])
    delete(actuation_log[session_id])   # same transaction, same session key
    report_to_user(what_was_removed, what_remains)

The timeout rule is the one that slips in most easily, because "keep the story moving" is a reasonable product goal. Moving the story is fine; moving the actuator up is not something a timer gets to decide.

The delete rule is mostly a data-model decision: if actuation logs are keyed by the same session ID as story text, a cascading delete is trivial. If they live in a separate telemetry pipeline, deletion quietly becomes partial.

Buyers can test all three without code: take a call mid-session and see whether the device resumes on its own, ignore a branch prompt and see which way it goes, and ask the brand what "delete history" removes. These map to questions like "how do AI stories control physical devices" and "story-driven AI toy for women."

This is the model CRAVE AI uses for story-controlled play on official devices: AI story-controlled vibrator. Principle write-up: narrative-to-device sync. Devices: AI sex toys.

Disclosure: I work on CRAVE AI. Adults-only product; no explicit content here.