perf(scheduler): harden jobs for scalable execution

server/internal/scheduler/monitoring_received_inspection_worker.go

@@ -117,12 +117,27 @@ func (w *MonitoringReceivedInspectionWorker) runOnce(parent context.Context) {
 	}
 }
 
-func (w *MonitoringReceivedInspectionWorker) RunOnce(parent context.Context) (map[string]any, error) {
+func (w *MonitoringReceivedInspectionWorker) RunOnce(parent context.Context, run JobRunContext) (map[string]any, error) {
 	if w == nil || w.monitoringPool == nil {
 		return map[string]any{"skipped": true, "reason": "worker_not_ready"}, nil
 	}
 	startedAt := time.Now()
-	ctx, cancel := context.WithTimeout(parent, w.timeout)
+	timeout := w.timeout
+	if run.Job != nil && run.Job.TimeoutSeconds > 0 {
+		timeout = time.Duration(run.Job.TimeoutSeconds) * time.Second
+	}
+	limit := w.limit
+	if run.Job != nil && run.Job.BatchSize != nil && *run.Job.BatchSize > 0 {
+		limit = *run.Job.BatchSize
+	}
+	if value := AsInt(run.Config, "batch_size", 0); value > 0 && (run.Job == nil || run.Job.BatchSize == nil) {
+		limit = value
+	}
+	threshold := w.threshold
+	if value := AsDuration(run.Config, "threshold", 0); value > 0 {
+		threshold = value
+	}
+	ctx, cancel := context.WithTimeout(parent, timeout)
 	defer cancel()
 
 	tx, err := w.monitoringPool.Begin(ctx)
@@ -132,7 +147,7 @@ func (w *MonitoringReceivedInspectionWorker) RunOnce(parent context.Context) (ma
 	defer tx.Rollback(ctx)
 
 	now := time.Now().UTC()
-	items, err := tenantapp.MarkMonitoringStaleReceivedTasks(ctx, tx, now, w.threshold, w.limit)
+	items, err := tenantapp.MarkMonitoringStaleReceivedTasks(ctx, tx, now, threshold, limit)
 	if err != nil {
 		return map[string]any{"stage": "inspect"}, err
 	}
@@ -141,7 +156,8 @@ func (w *MonitoringReceivedInspectionWorker) RunOnce(parent context.Context) (ma
 	}
 	return map[string]any{
 		"overdue_task_count": len(items),
-		"threshold_seconds":  int64(w.threshold.Seconds()),
+		"threshold_seconds":  int64(threshold.Seconds()),
 		"duration_ms":        time.Since(startedAt).Milliseconds(),
+		"batch_size":         limit,
 	}, nil
 }