Under the hoodTier: how much it should matter to you
2Useful: my rating, 1 to 5
3Signal: worth watching, 1 to 5
SessionsArea: what it touches
Internal ChangesKind: in v2.1.257,
Internal ChangesSection of the release
Assistant message merging (ets) gained an alternate path that, when echoApiBlockOrder is true and both messages carry an apiBlockIndex, merges content blocks by their original API index order instead of simple concatenation, threading apiBlockIndices through the message.
Transcript compaction now supports the same echoApiBlockOrder option plus a new echoWireToolInputs option; when set, these preserve raw wire tool inputs (wireToolInputs) and original API block ordering (apiBlockIndex/apiBlockIndices) instead of normalizing them, likely for diagnostics or exact-replay of assistant tool calls.
