fix: route onInputAvailable to the repaired tool in streaming calls - #21104
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Co-authored-by: brennanbutler01 <64561607+brennanbutler01@users.noreply.github.com>
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Background
Streaming APIs routed repaired tool input to the original tool's onInputAvailable callback, or skipped the callback when the original tool was unknown.
Root Cause
invokeToolCallbacksFromStream selected onInputAvailable using the tool name cached from tool-input-start instead of the parsed tool-call's repaired name; the reproduction confirmed execution used the repaired tool while callback routing did not.
Summary
Completed streamed tool calls now resolve onInputAvailable using the final parsed tool name. Added a patch changeset and removed reproduction-only artifacts.
Testing
Added regression coverage verifying start and delta callbacks remain associated with the streaming name while onInputAvailable uses the completed repaired tool name.
End-to-end Validation
pnpm -C packages/ai buildfollowed by the immutable original reproduction command — all generateText, streamText, and ToolLoopAgent.stream routing and control scenarios passed without the bug signal.Related Issues
Fixes #21100
Closes #21101