Discussion Composer
Reply composer input, reply banner, format toolbar, and submit flow.
- Bottom-of-thread reply entry with markdown draft state.
- Reply-to banner when responding to a specific author.
Enable DiscussionFeatures::MARKDOWN for the format toolbar, ATTACHMENTS for attach, and CITATIONS for citation drafts. Wire events.on_submit to persist drafts. Nest DiscussionComposerTools and DiscussionComposerHint for host-owned composer chrome.
Composer with format toolbar and submit log
Click Reply on a row, type a message, and submit to update the log panel and thread.
Main message with markdown and a design link.
Agree — let's track open questions here.
I'll draft the migration checklist.
Depth-3 reply for tree testing.
Separate branch at L1.
Based on the thread, the default depth is 4.