Add time-windowed message deduplication (exactly-once inbox)#312
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work_queue dedups only new/in_progress references — once an item completes the same reference enqueues again and redelivered webhooks reprocess. Add DedupWindow: a sliding-window inbox whose check_and_mark returns True the first time an id is seen within ttl_s and False for a duplicate, converting at-least-once delivery to exactly-once-in-window. Injectable clock, bounded size. Wired through facade, executor (AC_dedup_check, named-instance registry), MCP, and the Script Builder with a headless test batch and EN/Zh docs.
Up to standards ✅🟢 Issues
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| Metric | Results |
|---|---|
| Complexity | 25 |
| Duplication | 0 |
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What
work_queuededups onlynew/in_progressreferences — once an item completes the same reference enqueues again, and redelivered webhooks reprocess.DedupWindow(ttl_s, *, clock)— sliding window of recently-seen message ids.check_and_mark(id)→Truefirst time within the window (marks it),Falsefor a duplicate.seen/mark/purge_expired/size.Converts at-least-once delivery to exactly-once-in-window. Injectable clock, bounded size.
Layers
utils/dedup_window/(pure stdlib, zero PySide6).DedupWindow+__all__.AC_dedup_check(named-instance registry).ac_dedup_check.test/unit_test/headless/test_dedup_window_batch.py(7 tests; TTL via injected clock).v104_features_doc.rst(EN + Zh) + toctrees + 3 README What's-new sections.Verification
pytest→ 7 passed;ruff/pylint 10.00/bandit/radon clean; Qt-free.