Method enqueueTraceWriteFailure

packages/runtime/src/agent-run.ts:1771–1798

(
    error: unknown,
    label = 'agent run store write',
  )

  }

  private async enqueueTraceWriteFailure(
    error: unknown,
    label = 'agent run store write',
  ): Promise<void> {
    const message = errorMessage(error);
    this.traceWriteError ??= `${label}: ${message}`;
    try {
      await this.input.runStore?.updateRun(this.sessionId, this.runId, {
        traceWriteError: this.traceWriteError,
        updatedAt: this.input.now(),
      });
    } catch {
      // The terminal header commit retries the in-memory latch.
    }
    try {
      await this.input.runStore?.appendEvent(this.sessionId, this.runId, {
        type: 'trace_write_failed',
        id: this.input.newId(),
        runId: this.runId,
        sessionId: this.sessionId,
        turnId: this.turnId,
        ts: this.input.now(),
        message,
      });
    } catch {
      // Diagnostic persistence is best effort; never perturb model/tool execution.
    }
  }
}

function runtimePartialCoalescingKey(event: RuntimeEvent): string | undefined {