Performance (measured with 5,900 messages: open 9 s -> 0.7 s, typing 440 ms -> 25 ms)
- GET /sessions/{id}?limit=N loads the end of a chat (from the last summary
on, at most N); /sessions/{id}/messages?before|after|around loads more
(scrolling up stops at a summary unless asked). Without parameters the
full history as before (terminal client).
- Chat view: memoised message list (typing, streaming and status changes no
longer re-render the history), finished turns fold into "N steps · M files"
with the answer visible, tool card bodies and summaries are built only when
opened, scroll-to-bottom only when content changes.
Search: /sessions/{id}/search over the whole chat; a hit loads its part
(around) and marks the message, "back to the latest messages" returns.
Media: /sessions/{id}/media lists images, videos and audio of a chat and its
subagents (generated images, tool output, files written, media in answers,
attachments); ⋯ -> Media shows them with filters, a large view and a jump to
the message.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Richard ZinkandClaude Opus 5.5
3b0764450a