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Sweep 22 Oct 2026 · 21:04Z Build v2.1.309 528 read Stable v2.1.308 Latest v2.1.309 Next v2.1.309 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.227 ·

Legacy background-session paths are counted once each

Each older background-session operation reports once, showing which legacy paths are still used.

Under the hood Internal Changes
JSON All of v2.1.227
Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
SessionsArea: what it touches
Internal ChangesKind: in v2.1.227,
Internal ChangesSection of the release
What

The first time each older background-session operation is used, tengu_dead_probe_bg_legacy_op fires, making continued use of the pre-storage code path visible without repeating on every call.

Evidence

tengu_dead_probe_bg_legacy_op

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

See this entry in the whole of v2.1.227 →

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