feat(web): cite assistant responses with inline citations (#9146)

Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
Co-authored-by: maria-rcks <254055478+maria-rcks@users.noreply.github.com>
e7deb2aaf4Julius Marminge committed on 9/2/2026, 3:55:35 AM· committed by GitHubparent2ab7973
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