fix: sorting for completed and scheduled maintenance entries

* Completed entries are sorted by descending completion date
* Scheduled entries are sorted by ascending scheduling date
* Selecting both entries shall sort them by scheduling and then completion date in descending order

backend/internal/data/repo/repo_maintenance_entry.go

@@ -5,6 +5,7 @@ import (
 	"errors"
 	"time"
 
+	"entgo.io/ent/dialect/sql"
 	"github.com/google/uuid"
 	"github.com/sysadminsmedia/homebox/backend/internal/data/ent"
 	"github.com/sysadminsmedia/homebox/backend/internal/data/ent/group"
@@ -136,15 +137,29 @@ func (r *MaintenanceEntryRepository) GetMaintenanceByItemID(ctx context.Context,
 			maintenanceentry.DateEQ(time.Time{}),
 			maintenanceentry.DateGT(time.Now()),
 		))
+		// Sort scheduled entries by ascending scheduled date
+		query = query.Order(
+			maintenanceentry.ByScheduledDate(sql.OrderAsc()),
+		)
 	} else if filters.Status == MaintenanceFilterStatusCompleted {
 		query = query.Where(
 			maintenanceentry.Not(maintenanceentry.Or(
 				maintenanceentry.DateIsNil(),
 				maintenanceentry.DateEQ(time.Time{}),
 				maintenanceentry.DateGT(time.Now()),
 			)))
+		// Sort completed entries by descending completion date
+		query = query.Order(
+			maintenanceentry.ByDate(sql.OrderDesc()),
+		)
+	} else {
+		// Sort entries by default by scheduled and maintenance date in descending order
+		query = query.Order(
+			maintenanceentry.ByScheduledDate(sql.OrderDesc()),
+			maintenanceentry.ByDate(sql.OrderDesc()),
+		)
 	}
-	entries, err := query.WithItem().Order(maintenanceentry.ByScheduledDate()).All(ctx)
+	entries, err := query.WithItem().All(ctx)
 
 	if err != nil {
 		return []MaintenanceEntryWithDetails{}, err