Function closeOpenSpans

src/utils/telemetry/perfettoTracing.ts:965–983

* Force-close any remaining open spans at session end.

()

 * Force-close any remaining open spans at session end.
 */
function closeOpenSpans(): void {
  for (const [spanId, pending] of pendingSpans) {
    const endTime = getTimestamp()
    events.push({
      name: pending.name,
      cat: pending.category,
      ph: 'E',
      ts: endTime,
      pid: pending.agentInfo.processId,
      tid: pending.agentInfo.threadId,
      args: {
        ...pending.args,
        incomplete: true,
        duration_ms: (endTime - pending.startTime) / 1000,
      },
    })
    pendingSpans.delete(spanId)
  }
}

/**
 * Write the full trace to disk.  Errors are logged but swallowed so that a