Patient Agent Slow Lane

Submit-a-future API for deferrable work: submit with a deadline and the work is coalesced and dispatched at batch-shaped cost timing, with a hash-chained journal and dispatch-or-credit (never a silent miss). BYOK Slow Lane $9/mo per operator, first month free once; fronted lane priced at 75% of sync at a 24h deadline. v1 has no payment lane - subscribing records intent; the trial is the on-ramp.