feat(threads): up-arrow edits your last thread reply (+ fix cross-fire)

The thread composer reused RoomInput's hardcoded editableName="RoomInput", so
the main timeline's global up-arrow "edit last message" handler fired while
focused in a thread composer and targeted the MAIN timeline's last message
(wrong), and there was no up-arrow edit for the thread itself.

- Make editableName a RoomInput prop (default "RoomInput"); the thread composer
  passes "ThreadInput", so the two up-arrow handlers never cross-fire.
- Add an up-arrow-edit handler to ThreadTimeline (parity with RoomTimeline):
  empty thread composer + Up -> edit the latest editable reply in that thread,
  using thread.liveTimeline + canEditEvent + setEditId.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
This commit is contained in:
2026-07-10 20:28:26 -04:00
co-authored by Claude Opus 4.8
parent 61f1733f50
commit f155a4dc22
4 changed files with 41 additions and 4 deletions
+2
View File
@@ -901,6 +901,8 @@ Root messages in the main timeline show a **"N replies · time"** chip (server-a
The panel embeds the full composer (uploads, emoji, stickers, GIFs, voice, location, polls) with drafts, reply state, and upload queues **isolated per thread** (`roomId::threadRootId` keys). Replies-to-replies produce spec-correct `m.thread` + `m.in_reply_to` (`is_falling_back: false`). Scheduling and slash commands are disabled inside threads (v1).
**↑ to edit last reply**: pressing Up-arrow in the empty thread composer opens the editor on your most recent editable reply *in that thread* — parity with the main timeline. The thread composer carries a distinct `editableName="ThreadInput"` so the main timeline's global up-arrow handler and the thread's no longer cross-fire (previously the thread composer had the same name, so Up-arrow there wrongly targeted the main timeline's last message).
### Notifications (Slack-style, P4-1)
By default you're notified for a thread reply only when you **participate** in that thread (you've posted in it) or the reply **@mentions** you — other threads accumulate quietly behind their chip badges. Every thread can be overridden from the bell menu in the panel header: **Default (participating) / All replies / Mentions only / Mute**. Modes sync across your devices (`io.lotus.thread_notifications` account data, auto-pruned). Muting a thread silences notifications and sounds, removes the chip's unread badge (a small bell-mute glyph shows instead), and subtracts that thread from the room's sidebar unread badge (client-side — other Matrix clients on the account still count it).