Method recordRefusedAttemptUsage

src/node/services/streamManager.ts:2036–2064

* Attribute a refused fallback attempt's token usage to the refusing model * before the fallback swap wipes per-attempt counters. The toolModelUsages * entry is the durable record (session-usage rebuilds scan it per-model); the * live recordSessionUsage call keeps in-memory session totals c

(
    workspaceId: WorkspaceId,
    streamInfo: WorkspaceStreamInfo,
    refusedModel: string
  )

   * live recordSessionUsage call keeps in-memory session totals consistent with it.
   */
  private async recordRefusedAttemptUsage(
    workspaceId: WorkspaceId,
    streamInfo: WorkspaceStreamInfo,
    refusedModel: string
  ): Promise<void> {
    const { usage, providerMetadata } = await this.getRefusalUsageSnapshot(streamInfo);
    if (!usage) {
      return;
    }

    streamInfo.toolModelUsages.push({
      toolName: "model_fallback_refusal",
      timestamp: Date.now(),
      model: refusedModel,
      metadataModel: streamInfo.metadataModel,
      usage,
      ...(providerMetadata ? { providerMetadata } : {}),
    });

    await this.recordSessionUsage(
      workspaceId,
      refusedModel,
      usage,
      providerMetadata,
      "Failed to record refused-attempt session usage (fallback unaffected)",
      "warn",
      streamInfo
    );
  }

  private async recordTerminalRefusalUsage(
    workspaceId: WorkspaceId,