Add transactional outbox for durable at-least-once event delivery#315
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Up to standards ✅🟢 Issues
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| Metric | Results |
|---|---|
| Complexity | 43 |
| Duplication | 2 |
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Summary
events.cloud_eventsposts synchronously with no durability — a crash between doing the work and sending the event loses it, and a network blip drops it. This adds the transactional outbox pattern: persist each event first, then drain pending entries through an injected sink with at-least-once delivery and a dead-letter cap.Layers
je_auto_control/utils/outbox/outbox.py—Outboxwithenqueue/pending/dead_letters/drain(retry untilmax_attempts, then dead-letter) /to_dict/from_dict/save/load. Pure stdlib (json), no PySide6, injected sink → deterministic.Outboxre-exported fromje_auto_control+__all__.AC_outbox_enqueue→{id, pending},AC_outbox_pending→{pending}via a named-instance registry.ac_outbox_enqueue/ac_outbox_pending.CommandSpecs under Flow.Tests / docs
test/unit_test/headless/test_outbox_batch.py— 9 headless tests (enqueue/drain/retry/dead-letter/resume/max_batch/save-load + wiring + facade). Full headless suite green (3019 passed).v107_features_doc.rst+ toctrees; 3 README What's-new sections.