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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 v2.1.219 ·

Workshop and sidecar slug state now propagates out of forked agent contexts

Subagents can now pass workshop and sidecar tracking state back to your main session.

Under the hood Internal Changes
JSON All of v2.1.219
Under the hoodTier: how much it should matter to you
2Useful: my rating, 1 to 5
0Signal: worth watching, 1 to 5
ElsewhereArea: what it touches
Internal ChangesKind: in v2.1.219,
Internal ChangesSection of the release
What

The allowlist of AppState keys a forked or subagent context may write back to the parent session grew from one key to three.

Details
  • ASYNC_SHARED_APP_STATE_KEYS previously held only frameUrls
  • it now also includes workshopVerifiedSlugs and sidecarHistorySlugs
Evidence

ASYNC_SHARED_APP_STATE_KEYS

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

See this entry in the whole of v2.1.219 →

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