fix(mobile): agent-spawned threads can be mentioned from the @ picker (#15841)

Co-authored-by: Julius Marminge <51714798+juliusmarminge@users.noreply.github.com>
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
38d9760ccaLars Nieuwenhuis committed on 10/15/2026, 5:01:06 PM· committed by GitHubparentd09a9ea
11 files changedLine totals unavailable