Panel member token usage was tracked but discarded, so the cost badge only
ever showed the worker's tokens — misleading for MoA where the real cost is
roughly rounds x agents. Collect each member's usage and add it to the badge.
Each member fills its own TokenUsage in parallel (Anthropic loop via the
existing memberUsage, CLI via the now-captured CliChatResult return value;
OpenAI members stay null, nachruestbar). RunPanel sums them after the
Task.WhenAll barrier — single-threaded, so no lock or Interlocked needed —
across all MoA rounds and emits a panel_usage SSE event before panel_done.
The frontend adds those tokens onto the worker totals in the done handler so
the badge reflects the full chain cost.
- SseHelper: add TokenUsage.Add()
- AnthropicService.Panel.cs: PanelMemberResult.Usage, accumulate per round
after the barrier, emit panel_usage; RunPanelMemberViaCli returns usage
- chat.js: _panelUsage state, panel_usage case, add to worker tokens on done,
reset on stream start
- TODO.md: check off the member-token item
v1 limit: live badge only — FinalizeChain still persists worker tokens, so a
reload shows worker-only cost.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Panel members now stream token-by-token and show tool uses in real time
(like the session agent) instead of delivering text only at completion.
The key constraint is byte-level safety: N members flushing SSE frames
concurrently on the shared HttpResponse would interleave and corrupt the
stream, so a SemaphoreSlim gate serializes the writes (not the model work).
- SseHelper.TryWriteSse takes an optional write-lock (default null, backward
compatible)
- NonStreamingLoopCallbacks carries SseGate + MemberIndex; _text/_tool/_error
events are tagged with the member index (review/finalizer stay at -1, no gate)
- CLI members forward TextDelta/ToolStart/ToolResult live instead of
discarding everything but the final text
- Anthropic-API members stream per tool-round via the loop callbacks; OpenAI
members fall back to collected text at panel_member_done
- Frontend demuxes by member index into per-bubble interleaved text/tool
rendering
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
