fix(claude-agent-sdk): Fix subagents span nesting and input#2119

Luca Forstner (lforst) merged 4 commits into

mainbraintrustdata/braintrust-sdk-javascript:mainfrom

lforst/validate-github-issue-v1braintrustdata/braintrust-sdk-javascript:lforst/validate-github-issue-v1Copy head branch name to clipboard