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Sweep 22 Sep 2026 · 17:19Z Build v2.1.280 501 read Stable v2.1.267 Latest v2.1.280 Next v2.1.280 Feeds RSS JSON llms.txt Unofficial
Claude Code v2.1.259 ·

Turn-attribution metadata added to background/notification message sends

Task notifications can now say which conversational turn they belong to via a turn-attribution option.

TierUnder the hoodhow much it should matter to you
Useful2my rating, 1 to 5
Signal2worth watching, 1 to 5
AreaElsewherewhat it touches
KindInternal Changesin v2.1.259,
Group of 2 Under the hood No documentation found

Task notifications can now say which conversational turn they belong to via a turn-attribution option.

Internal message-send call sites (task notifications, hook stop messages, WebSocket housekeeping messages) now pass a turnAttribution value of "inherit" or "none", and a new helper resolves turnAttributionKey for task-notification mode. The task-notification enqueue path also gained a second options argument carrying turnAttribution, with the ultrareview-failed notification explicitly passing { turnAttribution: "inherit" }. This is internal bookkeeping to track which conversational turn a background message belongs to.

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Names in the bundleturnAttribution

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