* fix(server): bound every timeline item so one fetch cannot close the socket
A timeline page is one WebSocket message. Only three tool-call fields were
capped, so MCP results, file contents, errors and merged assistant rows could
make a 20-entry or even a 1-entry fetch pass the outbound high-water mark.
limitAgentTimelineItemContent is now one budgeted walk over any item: 64 KiB
for tool calls, 256 KiB for other items. Over budget, the largest strings are
cut to a shared length with a visible marker and oversized data URLs become a
marker. Fetches also apply it to merged assistant and reasoning rows.
* fix(server): keep short strings whole and typed arrays valid when limiting items
Strings up to 1 KiB are never cut, so a tool call keeps its callId and an
item limits to the same result twice. Arrays drop trailing elements
without inserting a marker element, which typed arrays such as todo items
would reject.
Mohamed Boudra
a4f696620b