apps/mobile/package.json                                |   6 +-
 apps/mobile/src/features/threads/ThreadComposer.tsx     |   7 +-
 apps/mobile/src/features/threads/ThreadDetailScreen.tsx | 114 ++++++++++---
 apps/mobile/src/features/threads/ThreadFeed.tsx         | 184 +++++++-------------
 apps/mobile/src/lib/threadActivity.test.ts              |  12 +-
 apps/mobile/src/lib/threadActivity.ts                   |  20 +--
 apps/mobile/src/lib/threadFeedLayout.test.ts            |  32 ----
 apps/mobile/src/lib/threadFeedLayout.ts                 |  22 ---
 apps/mobile/src/state/use-thread-composer-state.ts      |  33 ++--
 apps/web/package.json                                   |   2 +-
 apps/web/src/components/BranchToolbarBranchSelector.tsx |  11 +-
 apps/web/src/components/ChatView.tsx                    | 292 +++++++++++++++++++-------------
 apps/web/src/components/chat/ChatComposer.tsx           |  30 +---
 apps/web/src/components/chat/MessagesTimeline.test.tsx  |  52 +++++-
 apps/web/src/components/chat/MessagesTimeline.tsx       |  39 ++---
 apps/web/src/components/chat/ModelPickerContent.tsx     |   2 +-
 apps/web/src/index.css                                  |  55 +++++-
 packages/shared/package.json                            |   4 +
 packages/shared/src/chatList.test.ts                    |  42 +++++
 packages/shared/src/chatList.ts                         |  33 ++++
 pnpm-lock.yaml                                          |  28 +--
 21 files changed, 586 insertions(+), 434 deletions(-)