Adds onCountChange-after-reload (loadOnMount=true), null currentUserId isOwn behavior, replies flattened in display. 3 new tests covering ~10 branches. Refs #496. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Adds onCountChange-after-reload (loadOnMount=true), null currentUserId isOwn behavior, replies flattened in display. 3 new tests covering ~10 branches. Refs #496. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>