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@aebrer aebrer released this 11 Aug 15:49
· 33 commits to master since this release
v2.55.3
4cb2507
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Learn about vigilant mode.

Bounded dashboard streaming payloads

Fast, verbose local models no longer overwhelm the dashboard's SSE connection with redundant cumulative state on every streaming delta.

What changed

  • Smaller streaming frames. The dashboard-only event projection now strips the reducer-unused cumulative assistantMessageEvent.partial field (alongside the already-stripped top-level message) from message_update events before SSE sizing, retention, and fanout.
  • Nested child events covered. The same projection applies through the recursive background_agent_event path so subagent streams stay bounded too.
  • Exact transcript behavior preserved. The browser reducer reads only the stream event type, content index, delta, and finalized content — all of which survive projection — so live and replayed transcripts remain identical, including finalization and reconnect/resync recovery.
  • Boxed test regression. A 2,000-delta high-rate stream fixture proves stable per-frame sizes, bounded history within the configured byte budget, complete replay without resync barriers, and exact transcript reconstruction for text, thinking, and tool-call streams.
  • Forward-safe. Unknown event types pass through unchanged and the source runtime event is never mutated.

Implemented in PR 447.

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