Apply linter autofixes: internal/vaultik (refs #61)

internal/vaultik/helpers.go

@@ -1,6 +1,7 @@
 package vaultik
 
 import (
+	"errors"
 	"fmt"
 	"regexp"
 	"strconv"
@@ -29,11 +30,13 @@ func formatBytes(bytes int64) string {
 	if bytes < unit {
 		return fmt.Sprintf("%d B", bytes)
 	}
+
 	div, exp := int64(unit), 0
 	for n := bytes / unit; n >= unit; n /= unit {
 		div *= unit
 		exp++
 	}
+
 	return fmt.Sprintf("%.1f %cB", float64(bytes)/float64(div), "KMGTPE"[exp])
 }
 
@@ -42,11 +45,12 @@ func formatBytes(bytes int64) string {
 func parseSnapshotTimestamp(snapshotID string) (time.Time, error) {
 	parts := strings.Split(snapshotID, "_")
 	if len(parts) < 2 {
-		return time.Time{}, fmt.Errorf("invalid snapshot ID format: expected hostname_snapshotname_timestamp")
+		return time.Time{}, errors.New("invalid snapshot ID format: expected hostname_snapshotname_timestamp")
 	}
 
 	// Last part is the RFC3339 timestamp
 	timestampStr := parts[len(parts)-1]
+
 	timestamp, err := time.Parse(time.RFC3339, timestampStr)
 	if err != nil {
 		return time.Time{}, fmt.Errorf("invalid timestamp: %w", err)
@@ -80,17 +84,20 @@ func parseDuration(s string) (time.Duration, error) {
 	}
 
 	re := regexp.MustCompile(`(\d+)\s*([a-zA-Z]+)`)
+
 	matches := re.FindAllStringSubmatch(s, -1)
 	if len(matches) == 0 {
 		return 0, fmt.Errorf("invalid duration: %q", s)
 	}
 
 	var total time.Duration
+
 	for _, match := range matches {
 		n, err := strconv.Atoi(match[1])
 		if err != nil {
 			return 0, fmt.Errorf("invalid number %q: %w", match[1], err)
 		}
+
 		unit := strings.ToLower(match[2])
 		switch unit {
 		case "d", "day", "days":
@@ -105,5 +112,6 @@ func parseDuration(s string) (time.Duration, error) {
 			return 0, fmt.Errorf("unknown time unit %q", unit)
 		}
 	}
+
 	return total, nil
 }