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Sweep 22 Oct 2026 · 04:32Z Build v2.1.308 527 read Stable v2.1.308 Latest v2.1.308 Next v2.1.308 Feeds RSS JSON llms.txt llms-full.txt Unofficial
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Claude Code v2.1.221 ·

Teammate respawn records transcript restoration and first-paint marks

Resumed teammate sessions now replay first-paint marks to clients that attach, so reattaching looks right.

Under the hood Internal Changes
JSON All of v2.1.221
Under the hoodTier: how much it should matter to you
2Useful: my rating, 1 to 5
0Signal: worth watching, 1 to 5
SessionsArea: what it touches
Internal ChangesKind: in v2.1.221,
Internal ChangesSection of the release
What

The dispatch record now states explicitly whether a launch restores a transcript, and attaching clients get replayed interactivity marks.

Details
  • The launch payload gained an optional restoresTranscript boolean for both prompt and resume modes, persisted in the session schema.
  • Workers derive bootedViaResume from that flag instead of sniffing the argv for --resume.
  • A firedInteractiveMarks array is persisted and replayed to attaching clients: entries of kind content_paint or prompt_idle carrying msgsLoaded, msgsInJsonl and msgsRenderedAtFirstPaint, capped at two.
  • Attach responses now carry an imarkNonce and a booting flag.
Evidence

msgsRenderedAtFirstPaint

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

See this entry in the whole of v2.1.221 →

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