Unclear What the second argument to onInboundMessage carries or is used for is not stated.
What
The logic in Claude Code's REPL bridge that handles automatically reattaching an account after an identity mismatch (around ownership of a stashed session) was heavily renamed internally. Its onInboundMessage callback, which handles incoming messages, now receives two arguments instead of one.
Why
This is mostly internal cleanup, but the widened callback signature means the reattach flow now has access to more information when handling an inbound message.
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What the second argument to `onInboundMessage` carries or is used for is not stated.