Also fixes double-scheduling bug in scheduler_spec and delivery_spec caused by
after_create_commit hook firing while rules already exist — reservation is now
created before rules in setup so the hook finds nothing to schedule.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Orchestrates guards → render (Liquid) → send pipeline for one delivery.
Handles skip, reschedule, sent, failed states and re-enqueues on reschedule.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Implement guards following the same pass/reschedule/too_stale pattern as QuietHours.
Also fix belongs_to :conversation on Delivery to use class_name: '::Conversation' to avoid namespace resolution failure inside Captain::Lifecycle module.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Pure function mapping reservation events to timestamps; used by Scheduler (T9) to compute fire_at.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
