apps/mobile/src/features/threads/ThreadDetailScreen.tsx     |  23 ++
 apps/mobile/src/features/threads/ThreadFeed.tsx             | 159 +++++++++++--
 apps/web/src/components/ChatMarkdown.test.tsx               | 208 +++++++++++++++++
 apps/web/src/components/ChatMarkdown.tsx                    |  95 +++++++-
 apps/web/src/components/ChatView.logic.test.ts              |  16 ++
 apps/web/src/components/ChatView.logic.ts                   |  13 ++
 apps/web/src/components/ChatView.tsx                        |  22 ++
 apps/web/src/components/chat/MessagesTimeline.logic.test.ts |  17 ++
 apps/web/src/components/chat/MessagesTimeline.logic.ts      |   6 +-
 apps/web/src/components/chat/MessagesTimeline.tsx           |   8 +
 apps/web/src/markdown-clipboard.test.ts                     |  24 +-
 packages/client-runtime/package.json                        |  20 +-
 packages/client-runtime/src/codexArtifactTemplates.test.ts  | 119 ++++++++++
 packages/client-runtime/src/codexArtifactTemplates.ts       | 136 +++++++++++
 packages/client-runtime/src/codexFileCitations.test.ts      |  77 +++++++
 packages/client-runtime/src/codexFileCitations.ts           |  55 +++++
 packages/client-runtime/src/codexMarkdownDirectives.test.ts | 156 +++++++++++++
 packages/client-runtime/src/codexMarkdownDirectives.ts      | 388 ++++++++++++++++++++++++++++++++
 pnpm-lock.yaml                                              |  48 ++++
 19 files changed, 1558 insertions(+), 32 deletions(-)