getStats method
Get pool statistics
Implementation
Map<String, dynamic> getStats() {
return {
'workerCount': _workerCount,
'isRunning': _isRunning,
'activeWorkers': _workers.where((w) => w.isRunning).length,
'totalRunningJobs': _workers.fold(0, (sum, w) => sum + w.runningJobCount),
};
}