Add structured logging and better error handling

internal/jobs/history.go

@@ -1,7 +1,6 @@
 package jobs
 
 import (
-	"log"
 	"time"
 
 	"ddc/internal/history"
@@ -28,6 +27,6 @@ func (manager *Manager) recordHistory(job *Job, destination string, movedNames [
 		MovedAt:     time.Now(),
 	}
 	if err := manager.history.Add(entry); err != nil {
-		log.Printf("could not save history: %v", err)
+		job.logger().Error("could not save history", "error", err)
 	}
 }